Merge tag 'arm-soc-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC updates from Arnd Bergmann:
 "SoC specific code is generally used for older platforms that don't
  (yet) use device tree to do the same things.

   - Support is added for i.MXRT10xx, a Cortex-M7 based microcontroller
     from NXP. At the moment this is still incomplete as other portions
     are merged through different trees.

   - Long abandoned support for running NOMMU ARMv4 or ARMv5 platforms
     gets removed, now the Arm NOMMU platforms are limited to the
     Cortex-M family of microcontrollers

   - Two old PXA boards get removed, along with corresponding driver
     bits.

   - Continued cleanup of the Intel IXP4xx platforms, removing some
     remnants of the old board files.

   - Minor Cleanups and fixes for Orion, PXA, MMP, Mstar, Samsung

   - CPU idle support for AT91

   - A system controller driver for Polarfire"

* tag 'arm-soc-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (29 commits)
  ARM: remove support for NOMMU ARMv4/v5
  ARM: PXA: fix up decompressor code
  soc: microchip: make mpfs_sys_controller_put static
  ARM: pxa: remove Intel Imote2 and Stargate 2 boards
  ARM: mmp: Fix failure to remove sram device
  ARM: mstar: Select ARM_ERRATA_814220
  soc: add microchip polarfire soc system controller
  ARM: at91: Kconfig: select PM_OPP
  ARM: at91: PM: add cpu idle support for sama7g5
  ARM: at91: ddr: fix typo to align with datasheet naming
  ARM: at91: ddr: align macro definitions
  ARM: at91: ddr: remove CONFIG_SOC_SAMA7 dependency
  ARM: ixp4xx: Convert to SPARSE_IRQ and P2V
  ARM: ixp4xx: Drop all common code
  ARM: ixp4xx: Drop custom DMA coherency and bouncing
  ARM: ixp4xx: Remove feature bit accessors
  net: ixp4xx_hss: Check features using syscon
  net: ixp4xx_eth: Drop platform data support
  soc: ixp4xx-npe: Access syscon regs using regmap
  soc: ixp4xx: Add features from regmap helper
  ...

Documentation/devicetree/bindings/soc/samsung/exynos-usi.yaml

@@ -17,13 +17,6 @@ description: |
   child nodes, each representing a serial sub-node device. The mode setting
   selects which particular function will be used.
 
-  Refer to next bindings documentation for information on protocol subnodes that
-  can exist under USI node:
-
-  [1] Documentation/devicetree/bindings/serial/samsung_uart.yaml
-  [2] Documentation/devicetree/bindings/i2c/i2c-exynos5.txt
-  [3] Documentation/devicetree/bindings/spi/samsung,spi.yaml
-
 properties:
   $nodename:
     pattern: "^usi@[0-9a-f]+$"
@@ -71,10 +64,17 @@ properties:
       This property is optional.
 
 patternProperties:
-  # All other properties should be child nodes
-  "^(serial|spi|i2c)@[0-9a-f]+$":
+  "^i2c@[0-9a-f]+$":
+    $ref: /schemas/i2c/i2c-exynos5.yaml
+    description: Child node describing underlying I2C
+
+  "^serial@[0-9a-f]+$":
+    $ref: /schemas/serial/samsung_uart.yaml
+    description: Child node describing underlying UART/serial
+
+  "^spi@[0-9a-f]+$":
     type: object
-    description: Child node describing underlying USI serial protocol
+    description: Child node describing underlying SPI
 
 required:
   - compatible

MAINTAINERS

@@ -2117,13 +2117,6 @@ F:	Documentation/devicetree/bindings/arm/intel,keembay.yaml
 F:	arch/arm64/boot/dts/intel/keembay-evm.dts
 F:	arch/arm64/boot/dts/intel/keembay-soc.dtsi
 
-ARM/INTEL RESEARCH IMOTE/STARGATE 2 MACHINE SUPPORT
-M:	Jonathan Cameron <jic23@cam.ac.uk>
-L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
-S:	Maintained
-F:	arch/arm/mach-pxa/stargate2.c
-F:	drivers/pcmcia/pxa2xx_stargate2.c
-
 ARM/INTEL XSC3 (MANZANO) ARM CORE
 M:	Lennert Buytenhek <kernel@wantstofly.org>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)

arch/arm/Kconfig

@@ -233,9 +233,6 @@ config ARCH_MAY_HAVE_PC_FDC
 config ARCH_SUPPORTS_UPROBES
 	def_bool y
 
-config ARCH_HAS_DMA_SET_COHERENT_MASK
-	bool
-
 config GENERIC_ISA_DMA
 	bool
 
@@ -279,7 +276,7 @@ config PHYS_OFFSET
 	hex "Physical address of main memory" if MMU
 	depends on !ARM_PATCH_PHYS_VIRT
 	default DRAM_BASE if !MMU
-	default 0x00000000 if ARCH_FOOTBRIDGE || ARCH_IXP4XX
+	default 0x00000000 if ARCH_FOOTBRIDGE
 	default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
 	default 0x30000000 if ARCH_S3C24XX
 	default 0xa0000000 if ARCH_IOP32X || ARCH_PXA
@@ -307,6 +304,17 @@ config MMU
 	  Select if you want MMU-based virtualised addressing space
 	  support by paged memory management. If unsure, say 'Y'.
 
+config ARM_SINGLE_ARMV7M
+	def_bool !MMU
+	select ARM_NVIC
+	select AUTO_ZRELADDR
+	select TIMER_OF
+	select COMMON_CLK
+	select CPU_V7M
+	select NO_IOPORT_MAP
+	select SPARSE_IRQ
+	select USE_OF
+
 config ARCH_MMAP_RND_BITS_MIN
 	default 8
 
@@ -321,12 +329,11 @@ config ARCH_MMAP_RND_BITS_MAX
 #
 choice
 	prompt "ARM system type"
-	default ARM_SINGLE_ARMV7M if !MMU
-	default ARCH_MULTIPLATFORM if MMU
+	depends on MMU
+	default ARCH_MULTIPLATFORM
 
 config ARCH_MULTIPLATFORM
 	bool "Allow multiple platforms to be selected"
-	depends on MMU
 	select ARCH_FLATMEM_ENABLE
 	select ARCH_SPARSEMEM_ENABLE
 	select ARCH_SELECT_MEMORY_MODEL
@@ -340,18 +347,6 @@ config ARCH_MULTIPLATFORM
 	select SPARSE_IRQ
 	select USE_OF
 
-config ARM_SINGLE_ARMV7M
-	bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
-	depends on !MMU
-	select ARM_NVIC
-	select AUTO_ZRELADDR
-	select TIMER_OF
-	select COMMON_CLK
-	select CPU_V7M
-	select NO_IOPORT_MAP
-	select SPARSE_IRQ
-	select USE_OF
-
 config ARCH_EP93XX
 	bool "EP93xx-based"
 	select ARCH_SPARSEMEM_ENABLE
@@ -370,7 +365,6 @@ config ARCH_FOOTBRIDGE
 	bool "FootBridge"
 	select CPU_SA110
 	select FOOTBRIDGE
-	select NEED_MACH_IO_H if !MMU
 	select NEED_MACH_MEMORY_H
 	help
 	  Support for systems based on the DC21285 companion chip
@@ -378,7 +372,6 @@ config ARCH_FOOTBRIDGE
 
 config ARCH_IOP32X
 	bool "IOP32x-based"
-	depends on MMU
 	select CPU_XSCALE
 	select GPIO_IOP
 	select GPIOLIB
@@ -390,18 +383,15 @@ config ARCH_IOP32X
 
 config ARCH_IXP4XX
 	bool "IXP4xx-based"
-	depends on MMU
-	select ARCH_HAS_DMA_SET_COHERENT_MASK
 	select ARCH_SUPPORTS_BIG_ENDIAN
+	select ARM_PATCH_PHYS_VIRT
 	select CPU_XSCALE
-	select DMABOUNCE if PCI
 	select GPIO_IXP4XX
 	select GPIOLIB
 	select HAVE_PCI
 	select IXP4XX_IRQ
 	select IXP4XX_TIMER
-	# With the new PCI driver this is not needed
-	select NEED_MACH_IO_H if IXP4XX_PCI_LEGACY
+	select SPARSE_IRQ
 	select USB_EHCI_BIG_ENDIAN_DESC
 	select USB_EHCI_BIG_ENDIAN_MMIO
 	help
@@ -423,7 +413,6 @@ config ARCH_DOVE
 
 config ARCH_PXA
 	bool "PXA2xx/PXA3xx-based"
-	depends on MMU
 	select ARCH_MTD_XIP
 	select ARM_CPU_SUSPEND if PM
 	select AUTO_ZRELADDR
@@ -442,7 +431,6 @@ config ARCH_PXA
 
 config ARCH_RPC
 	bool "RiscPC"
-	depends on MMU
 	depends on !CC_IS_CLANG && GCC_VERSION < 90100 && GCC_VERSION >= 60000
 	select ARCH_ACORN
 	select ARCH_MAY_HAVE_PC_FDC
@@ -497,7 +485,6 @@ config ARCH_S3C24XX
 
 config ARCH_OMAP1
 	bool "TI OMAP1"
-	depends on MMU
 	select ARCH_OMAP
 	select CLKSRC_MMIO
 	select GENERIC_IRQ_CHIP

arch/arm/configs/pxa_defconfig

@@ -41,8 +41,6 @@ CONFIG_MACH_EXEDA=y
 CONFIG_MACH_CM_X300=y
 CONFIG_MACH_CAPC7117=y
 CONFIG_ARCH_GUMSTIX=y
-CONFIG_MACH_INTELMOTE2=y
-CONFIG_MACH_STARGATE2=y
 CONFIG_MACH_XCEP=y
 CONFIG_TRIZEPS_PXA=y
 CONFIG_MACH_TRIZEPS4WL=y
@@ -487,7 +485,6 @@ CONFIG_SND_SOC_ZYLONITE=m
 CONFIG_SND_PXA2XX_SOC_HX4700=m
 CONFIG_SND_PXA2XX_SOC_MAGICIAN=m
 CONFIG_SND_PXA2XX_SOC_MIOA701=m
-CONFIG_SND_PXA2XX_SOC_IMOTE2=m
 CONFIG_SND_SOC_AK4642=m
 CONFIG_SND_SOC_WM8978=m
 CONFIG_SND_SIMPLE_CARD=m

arch/arm/mach-at91/Kconfig

@@ -63,6 +63,7 @@ config SOC_SAMA7G5
 	select HAVE_AT91_GENERATED_CLK
 	select HAVE_AT91_SAM9X60_PLL
 	select HAVE_AT91_UTMI
+	select PM_OPP
 	select SOC_SAMA7
 	help
 	  Select this if you are using one of Microchip's SAMA7G5 family SoC.

arch/arm/mach-at91/pm.c

@@ -605,6 +605,30 @@ static void at91sam9_sdram_standby(void)
 		at91_ramc_write(1, AT91_SDRAMC_LPR, saved_lpr1);
 }
 
+static void sama7g5_standby(void)
+{
+	int pwrtmg, ratio;
+
+	pwrtmg = readl(soc_pm.data.ramc[0] + UDDRC_PWRCTL);
+	ratio = readl(soc_pm.data.pmc + AT91_PMC_RATIO);
+
+	/*
+	 * Place RAM into self-refresh after a maximum idle clocks. The maximum
+	 * idle clocks is configured by bootloader in
+	 * UDDRC_PWRMGT.SELFREF_TO_X32.
+	 */
+	writel(pwrtmg | UDDRC_PWRCTL_SELFREF_EN,
+	       soc_pm.data.ramc[0] + UDDRC_PWRCTL);
+	/* Divide CPU clock by 16. */
+	writel(ratio & ~AT91_PMC_RATIO_RATIO, soc_pm.data.pmc + AT91_PMC_RATIO);
+
+	cpu_do_idle();
+
+	/* Restore previous configuration. */
+	writel(ratio, soc_pm.data.pmc + AT91_PMC_RATIO);
+	writel(pwrtmg, soc_pm.data.ramc[0] + UDDRC_PWRCTL);
+}
+
 struct ramc_info {
 	void (*idle)(void);
 	unsigned int memctrl;
@@ -615,6 +639,7 @@ static const struct ramc_info ramc_infos[] __initconst = {
 	{ .idle = at91sam9_sdram_standby, .memctrl = AT91_MEMCTRL_SDRAMC},
 	{ .idle = at91_ddr_standby, .memctrl = AT91_MEMCTRL_DDRSDR},
 	{ .idle = sama5d3_ddr_standby, .memctrl = AT91_MEMCTRL_DDRSDR},
+	{ .idle = sama7g5_standby, },
 };
 
 static const struct of_device_id ramc_ids[] __initconst = {
@@ -622,7 +647,7 @@ static const struct of_device_id ramc_ids[] __initconst = {
 	{ .compatible = "atmel,at91sam9260-sdramc", .data = &ramc_infos[1] },
 	{ .compatible = "atmel,at91sam9g45-ddramc", .data = &ramc_infos[2] },
 	{ .compatible = "atmel,sama5d3-ddramc", .data = &ramc_infos[3] },
-	{ .compatible = "microchip,sama7g5-uddrc", },
+	{ .compatible = "microchip,sama7g5-uddrc", .data = &ramc_infos[4], },
 	{ /*sentinel*/ }
 };
 

arch/arm/mach-at91/pm_suspend.S

@@ -159,7 +159,7 @@ sr_ena_1:
 
 	/* Switch to self-refresh. */
 	ldr	tmp1, [r2, #UDDRC_PWRCTL]
-	orr	tmp1, tmp1, #UDDRC_PWRCTRL_SELFREF_SW
+	orr	tmp1, tmp1, #UDDRC_PWRCTL_SELFREF_SW
 	str	tmp1, [r2, #UDDRC_PWRCTL]
 
 sr_ena_2:
@@ -276,7 +276,7 @@ sr_dis_5:
 
 	/* Trigger self-refresh exit. */
 	ldr	tmp1, [r2, #UDDRC_PWRCTL]
-	bic	tmp1, tmp1, #UDDRC_PWRCTRL_SELFREF_SW
+	bic	tmp1, tmp1, #UDDRC_PWRCTL_SELFREF_SW
 	str	tmp1, [r2, #UDDRC_PWRCTL]
 
 sr_dis_6:

arch/arm/mach-bcm/Kconfig

@@ -185,7 +185,6 @@ config ARCH_BCM_53573
 config ARCH_BCM_63XX
 	bool "Broadcom BCM63xx DSL SoC"
 	depends on ARCH_MULTI_V7
-	depends on MMU
 	select ARCH_HAS_RESET_CONTROLLER
 	select ARM_ERRATA_754322
 	select ARM_ERRATA_764369 if SMP

arch/arm/mach-dove/irq.c

@@ -73,12 +73,12 @@ void __init dove_init_irq(void)
 	/*
 	 * Initialize gpiolib for GPIOs 0-71.
 	 */
-	orion_gpio_init(NULL, 0, 32, DOVE_GPIO_LO_VIRT_BASE, 0,
+	orion_gpio_init(0, 32, DOVE_GPIO_LO_VIRT_BASE, 0,
 			IRQ_DOVE_GPIO_START, gpio0_irqs);
 
-	orion_gpio_init(NULL, 32, 32, DOVE_GPIO_HI_VIRT_BASE, 0,
+	orion_gpio_init(32, 32, DOVE_GPIO_HI_VIRT_BASE, 0,
 			IRQ_DOVE_GPIO_START + 32, gpio1_irqs);
 
-	orion_gpio_init(NULL, 64, 8, DOVE_GPIO2_VIRT_BASE, 0,
+	orion_gpio_init(64, 8, DOVE_GPIO2_VIRT_BASE, 0,
 			IRQ_DOVE_GPIO_START + 64, gpio2_irqs);
 }

arch/arm/mach-exynos/firmware.c

@@ -60,8 +60,10 @@ static int exynos_cpu_boot(int cpu)
 	/*
 	 * Exynos3250 doesn't need to send smc command for secondary CPU boot
 	 * because Exynos3250 removes WFE in secure mode.
+	 *
+	 * On Exynos5 devices the call is ignored by trustzone firmware.
 	 */
-	if (soc_is_exynos3250())
+	if (!soc_is_exynos4210() && !soc_is_exynos4412())
 		return 0;
 
 	/*

arch/arm/mach-footbridge/include/mach/hardware.h

@@ -21,32 +21,26 @@
  * 0xf0000000	0x80000000	16MB	ISA memory
  */
 
-#ifdef CONFIG_MMU
-#define MMU_IO(a, b)	(a)
-#else
-#define MMU_IO(a, b)	(b)
-#endif
-
 #define XBUS_SIZE		0x00100000
-#define XBUS_BASE		MMU_IO(0xff800000, 0x40000000)
+#define XBUS_BASE		0xff800000
 
 #define ARMCSR_SIZE		0x00100000
-#define ARMCSR_BASE		MMU_IO(0xfe000000, 0x42000000)
+#define ARMCSR_BASE		0xfe000000
 
 #define WFLUSH_SIZE		0x00100000
-#define WFLUSH_BASE		MMU_IO(0xfd000000, 0x78000000)
+#define WFLUSH_BASE		0xfd000000
 
 #define PCIIACK_SIZE		0x00100000
-#define PCIIACK_BASE		MMU_IO(0xfc000000, 0x79000000)
+#define PCIIACK_BASE		0xfc000000
 
 #define PCICFG1_SIZE		0x01000000
-#define PCICFG1_BASE		MMU_IO(0xfb000000, 0x7a000000)
+#define PCICFG1_BASE		0xfb000000
 
 #define PCICFG0_SIZE		0x01000000
-#define PCICFG0_BASE		MMU_IO(0xfa000000, 0x7b000000)
+#define PCICFG0_BASE		0xfa000000
 
 #define PCIMEM_SIZE		0x01000000
-#define PCIMEM_BASE		MMU_IO(0xf0000000, 0x80000000)
+#define PCIMEM_BASE		0xf0000000
 
 #define XBUS_CS2		0x40012000
 

arch/arm/mach-footbridge/include/mach/io.h

-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- *  arch/arm/mach-footbridge/include/mach/io.h
- *
- *  Copyright (C) 1997-1999 Russell King
- *
- *  Modifications:
- *   06-12-1997	RMK	Created.
- *   07-04-1999	RMK	Major cleanup
- */
-#ifndef __ASM_ARM_ARCH_IO_H
-#define __ASM_ARM_ARCH_IO_H
-
-/*
- * Translation of various i/o addresses to host addresses for !CONFIG_MMU
- */
-#define PCIO_BASE       0x7c000000
-#define __io(a)			((void __iomem *)(PCIO_BASE + (a)))
-
-#endif

arch/arm/mach-imx/Kconfig

@@ -227,6 +227,13 @@ config SOC_IMX7ULP
 	help
 	  This enables support for Freescale i.MX7 Ultra Low Power processor.
 
+config SOC_IMXRT
+	bool "i.MXRT support"
+	depends on ARM_SINGLE_ARMV7M
+	select ARMV7M_SYSTICK if ARM_SINGLE_ARMV7M
+	help
+	  This enables support for Freescale i.MXRT Crossover processor.
+
 config SOC_VF610
 	bool "Vybrid Family VF610 support"
 	select ARM_GIC if ARCH_MULTI_V7

arch/arm/mach-imx/Makefile

@@ -63,6 +63,8 @@ obj-$(CONFIG_SOC_IMX50) += mach-imx50.o
 obj-$(CONFIG_SOC_IMX51) += mach-imx51.o
 obj-$(CONFIG_SOC_IMX53) += mach-imx53.o
 
+obj-$(CONFIG_SOC_IMXRT) += mach-imxrt.o
+
 obj-$(CONFIG_SOC_VF610) += mach-vf610.o
 
 obj-$(CONFIG_SOC_LS1021A) += mach-ls1021a.o

arch/arm/mach-imx/mach-imxrt.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019
+ * Author(s): Giulio Benetti <giulio.benetti@benettiengineering.com>
+ */
+
+#include <linux/kernel.h>
+#include <asm/mach/arch.h>
+#include <asm/v7m.h>
+
+static const char *const imxrt_compat[] __initconst = {
+	"fsl,imxrt1050",
+	NULL
+};
+
+DT_MACHINE_START(IMXRTDT, "IMXRT (Device Tree Support)")
+	.dt_compat = imxrt_compat,
+	.restart = armv7m_restart,
+MACHINE_END

arch/arm/mach-integrator/Kconfig

@@ -42,24 +42,12 @@ config INTEGRATOR_IMPD1
 	  allows ARM(R) Ltd PrimeCells to be developed and evaluated.
 	  The IM-PD1 can be found on the Integrator/PP2 platform.
 
-config INTEGRATOR_CM7TDMI
-	bool "Integrator/CM7TDMI core module"
-	depends on ARCH_INTEGRATOR_AP
-	depends on ARCH_MULTI_V4 && !MMU
-	select CPU_ARM7TDMI
-
 config INTEGRATOR_CM720T
 	bool "Integrator/CM720T core module"
 	depends on ARCH_INTEGRATOR_AP
 	depends on ARCH_MULTI_V4T
 	select CPU_ARM720T
 
-config INTEGRATOR_CM740T
-	bool "Integrator/CM740T core module"
-	depends on ARCH_INTEGRATOR_AP
-	depends on ARCH_MULTI_V4T && !MMU
-	select CPU_ARM740T
-
 config INTEGRATOR_CM920T
 	bool "Integrator/CM920T core module"
 	depends on ARCH_INTEGRATOR_AP
@@ -78,23 +66,6 @@ config INTEGRATOR_CM926EJS
 	depends on ARCH_MULTI_V5
 	select CPU_ARM926T
 
-config INTEGRATOR_CM940T
-	bool "Integrator/CM940T core module"
-	depends on ARCH_INTEGRATOR_AP
-	depends on ARCH_MULTI_V4T && !MMU
-	select CPU_ARM940T
-
-config INTEGRATOR_CM946ES
-	bool "Integrator/CM946E-S core module"
-	depends on ARCH_INTEGRATOR_AP
-	depends on ARCH_MULTI_V5 && !MMU
-	select CPU_ARM946E
-
-config INTEGRATOR_CM966ES
-	bool "Integrator/CM966E-S core module"
-	depends on ARCH_INTEGRATOR_AP
-	depends on BROKEN # no kernel support
-
 config INTEGRATOR_CM10200E_REV0
 	bool "Integrator/CM10200E rev.0 core module"
 	depends on ARCH_INTEGRATOR_AP && n
@@ -127,7 +98,7 @@ config INTEGRATOR_CM1136JFS
 
 config ARCH_INTEGRATOR_CP
 	bool "Support Integrator/CP platform"
-	depends on (!MMU || ARCH_MULTI_V5 || ARCH_MULTI_V6)
+	depends on ARCH_MULTI_V5 || ARCH_MULTI_V6
 	select ARM_TIMER_SP804
 	select SERIAL_AMBA_PL011 if TTY
 	select SERIAL_AMBA_PL011_CONSOLE if TTY
@@ -135,12 +106,6 @@ config ARCH_INTEGRATOR_CP
 	help
 	  Include support for the ARM(R) Integrator CP platform.
 
-config INTEGRATOR_CT7T
-	bool "Integrator/CT7TD (ARM7TDMI) core tile"
-	depends on ARCH_INTEGRATOR_CP
-	depends on ARCH_MULTI_V4T && !MMU
-	select CPU_ARM7TDMI
-
 config INTEGRATOR_CT926
 	bool "Integrator/CT926 (ARM926EJ-S) core tile"
 	depends on ARCH_INTEGRATOR_CP

arch/arm/mach-integrator/hardware.h

@@ -16,12 +16,7 @@
 #define IO_START		INTEGRATOR_HDR_BASE        // PA of IO
 
 /* macro to get at IO space when running virtually */
-#ifdef CONFIG_MMU
 #define IO_ADDRESS(x)	(((x) & 0x000fffff) | (((x) >> 4) & 0x0ff00000) | IO_BASE)
-#else
-#define IO_ADDRESS(x)	(x)
-#endif
-
 #define __io_address(n)		((void __iomem *)IO_ADDRESS(n))
 
 /*

arch/arm/mach-ixp4xx/Kconfig

@@ -17,63 +17,6 @@ config MACH_IXP4XX_OF
 	help
 	  Say 'Y' here to support Device Tree-based IXP4xx platforms.
 
-config MACH_GATEWAY7001
-	bool "Gateway 7001"
-	depends on IXP4XX_PCI_LEGACY
-	help
-	  Say 'Y' here if you want your kernel to support Gateway's
-	  7001 Access Point. For more information on this platform,
-	  see http://openwrt.org
-
-config MACH_GORAMO_MLR
-	bool "GORAMO Multi Link Router"
-	depends on IXP4XX_PCI_LEGACY
-	help
-	  Say 'Y' here if you want your kernel to support GORAMO
-	  MultiLink router.
-
-config ARCH_PRPMC1100
-	bool "PrPMC1100"
-	help
-	  Say 'Y' here if you want your kernel to support the Motorola
-	  PrPCM1100 Processor Mezanine Module. For more information on
-	  this platform, see <file:Documentation/arm/ixp4xx.rst>.
-
-comment "IXP4xx Options"
-
-config IXP4XX_PCI_LEGACY
-	bool "IXP4xx legacy PCI driver support"
-	depends on PCI
-	help
-	  Selects legacy PCI driver.
-	  Not recommended for new development.
-
-config IXP4XX_INDIRECT_PCI
-	bool "Use indirect PCI memory access"
-	depends on IXP4XX_PCI_LEGACY
-	help
-          IXP4xx provides two methods of accessing PCI memory space:
-
-          1) A direct mapped window from 0x48000000 to 0x4BFFFFFF (64MB).
-             To access PCI via this space, we simply ioremap() the BAR
-             into the kernel and we can use the standard read[bwl]/write[bwl]
-             macros. This is the preferred method due to speed but it
-             limits the system to just 64MB of PCI memory. This can be
-             problematic if using video cards and other memory-heavy devices.
-
-	  2) If > 64MB of memory space is required, the IXP4xx can be
-	     configured to use indirect registers to access the whole PCI
-	     memory space. This currently allows for up to 1 GB (0x10000000
-	     to 0x4FFFFFFF) of memory on the bus. The disadvantage of this
-	     is that every PCI access requires three local register accesses
-	     plus a spinlock, but in some cases the performance hit is
-	     acceptable. In addition, you cannot mmap() PCI devices in this
-	     case due to the indirect nature of the PCI window.
-
-	  By default, the direct method is used. Choose this option if you
-	  need to use the indirect method instead. If you don't know
-	  what you need, leave this option unselected.
-
 endmenu
 
 endif

arch/arm/mach-ixp4xx/Makefile

 # SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for the linux kernel.
-#
-
-obj-pci-y	:=
-obj-pci-n	:=
-
-# Device tree platform
-obj-pci-$(CONFIG_MACH_IXP4XX_OF)	+= ixp4xx-of.o
-
-obj-pci-$(CONFIG_MACH_GATEWAY7001)	+= gateway7001-pci.o
-
-obj-y	+= common.o
-
-obj-$(CONFIG_MACH_GATEWAY7001)	+= gateway7001-setup.o
-obj-$(CONFIG_MACH_GORAMO_MLR)	+= goramo_mlr.o
-
-obj-$(CONFIG_PCI)		+= $(obj-pci-$(CONFIG_PCI)) common-pci.o
+obj-y	+= ixp4xx-of.o

arch/arm/mach-ixp4xx/gateway7001-pci.c

-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * arch/arch/mach-ixp4xx/gateway7001-pci.c
- *
- * PCI setup routines for Gateway 7001
- *
- * Copyright (C) 2007 Imre Kaloz <kaloz@openwrt.org>
- *
- * based on coyote-pci.c:
- *	Copyright (C) 2002 Jungo Software Technologies.
- *	Copyright (C) 2003 MontaVista Softwrae, Inc.
- *
- * Maintainer: Imre Kaloz <kaloz@openwrt.org>
- */
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-
-#include <asm/mach-types.h>
-#include <mach/hardware.h>
-
-#include <asm/mach/pci.h>
-
-#include "irqs.h"
-
-void __init gateway7001_pci_preinit(void)
-{
-	irq_set_irq_type(IRQ_IXP4XX_GPIO10, IRQ_TYPE_LEVEL_LOW);
-	irq_set_irq_type(IRQ_IXP4XX_GPIO11, IRQ_TYPE_LEVEL_LOW);
-
-	ixp4xx_pci_preinit();
-}
-
-static int __init gateway7001_map_irq(const struct pci_dev *dev, u8 slot,
-	u8 pin)
-{
-	if (slot == 1)
-		return IRQ_IXP4XX_GPIO11;
-	else if (slot == 2)
-		return IRQ_IXP4XX_GPIO10;
-	else return -1;
-}
-
-struct hw_pci gateway7001_pci __initdata = {
-	.nr_controllers = 1,
-	.ops		= &ixp4xx_ops,
-	.preinit =        gateway7001_pci_preinit,
-	.setup =          ixp4xx_setup,
-	.map_irq =        gateway7001_map_irq,
-};
-
-int __init gateway7001_pci_init(void)
-{
-	if (machine_is_gateway7001())
-		pci_common_init(&gateway7001_pci);
-	return 0;
-}
-
-subsys_initcall(gateway7001_pci_init);

arch/arm/mach-ixp4xx/gateway7001-setup.c

-// SPDX-License-Identifier: GPL-2.0
-/*
- * arch/arm/mach-ixp4xx/gateway7001-setup.c
- *
- * Board setup for the Gateway 7001 board
- *
- * Copyright (C) 2007 Imre Kaloz <kaloz@openwrt.org>
- *
- * based on coyote-setup.c:
- *      Copyright (C) 2003-2005 MontaVista Software, Inc.
- *
- * Author: Imre Kaloz <Kaloz@openwrt.org>
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/serial.h>
-#include <linux/tty.h>
-#include <linux/serial_8250.h>
-
-#include <asm/types.h>
-#include <asm/setup.h>
-#include <asm/memory.h>
-#include <mach/hardware.h>
-#include <asm/irq.h>
-#include <asm/mach-types.h>
-#include <asm/mach/arch.h>
-#include <asm/mach/flash.h>
-
-#include "irqs.h"
-
-static struct flash_platform_data gateway7001_flash_data = {
-	.map_name	= "cfi_probe",
-	.width		= 2,
-};
-
-static struct resource gateway7001_flash_resource = {
-	.flags		= IORESOURCE_MEM,
-};
-
-static struct platform_device gateway7001_flash = {
-	.name		= "IXP4XX-Flash",
-	.id		= 0,
-	.dev		= {
-		.platform_data = &gateway7001_flash_data,
-	},
-	.num_resources	= 1,
-	.resource	= &gateway7001_flash_resource,
-};
-
-static struct resource gateway7001_uart_resource = {
-	.start	= IXP4XX_UART2_BASE_PHYS,
-	.end	= IXP4XX_UART2_BASE_PHYS + 0x0fff,
-	.flags	= IORESOURCE_MEM,
-};
-
-static struct plat_serial8250_port gateway7001_uart_data[] = {
-	{
-		.mapbase	= IXP4XX_UART2_BASE_PHYS,
-		.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
-		.irq		= IRQ_IXP4XX_UART2,
-		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
-		.iotype		= UPIO_MEM,
-		.regshift	= 2,
-		.uartclk	= IXP4XX_UART_XTAL,
-	},
-	{ },
-};
-
-static struct platform_device gateway7001_uart = {
-	.name		= "serial8250",
-	.id		= PLAT8250_DEV_PLATFORM,
-	.dev			= {
-		.platform_data	= gateway7001_uart_data,
-	},
-	.num_resources	= 1,
-	.resource	= &gateway7001_uart_resource,
-};
-
-static struct platform_device *gateway7001_devices[] __initdata = {
-	&gateway7001_flash,
-	&gateway7001_uart
-};
-
-static void __init gateway7001_init(void)
-{
-	ixp4xx_sys_init();
-
-	gateway7001_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
-	gateway7001_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_32M - 1;
-
-	*IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;
-	*IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;
-
-	platform_add_devices(gateway7001_devices, ARRAY_SIZE(gateway7001_devices));
-}
-
-#ifdef CONFIG_MACH_GATEWAY7001
-MACHINE_START(GATEWAY7001, "Gateway 7001 AP")
-	/* Maintainer: Imre Kaloz <kaloz@openwrt.org> */
-	.map_io		= ixp4xx_map_io,
-	.init_early	= ixp4xx_init_early,
-	.init_irq	= ixp4xx_init_irq,
-	.init_time	= ixp4xx_timer_init,
-	.atag_offset	= 0x100,
-	.init_machine	= gateway7001_init,
-#if defined(CONFIG_PCI)
-	.dma_zone_size	= SZ_64M,
-#endif
-	.restart	= ixp4xx_restart,
-MACHINE_END
-#endif

arch/arm/mach-ixp4xx/include/mach/hardware.h

-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * arch/arm/mach-ixp4xx/include/mach/hardware.h 
- *
- * Copyright (C) 2002 Intel Corporation.
- * Copyright (C) 2003-2004 MontaVista Software, Inc.
- */
-
-/*
- * Hardware definitions for IXP4xx based systems
- */
-
-#ifndef __ASM_ARCH_HARDWARE_H__
-#define __ASM_ARCH_HARDWARE_H__
-
-#ifdef CONFIG_IXP4XX_INDIRECT_PCI
-#define PCIBIOS_MAX_MEM		0x4FFFFFFF
-#else
-#define PCIBIOS_MAX_MEM		0x4BFFFFFF
-#endif
-
-/* Register locations and bits */
-#include "ixp4xx-regs.h"
-
-#ifndef __ASSEMBLER__
-#include <linux/soc/ixp4xx/cpu.h>
-#endif
-
-/* Platform helper functions and definitions */
-#include "platform.h"
-
-#endif  /* _ASM_ARCH_HARDWARE_H */

arch/arm/mach-ixp4xx/include/mach/platform.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * arch/arm/mach-ixp4xx/include/mach/platform.h
- *
- * Constants and functions that are useful to IXP4xx platform-specific code
- * and device drivers.
- *
- * Copyright (C) 2004 MontaVista Software, Inc.
- */
-
-#ifndef __ASM_ARCH_HARDWARE_H__
-#error "Do not include this directly, instead #include <mach/hardware.h>"
-#endif
-
-#ifndef __ASSEMBLY__
-
-#include <linux/reboot.h>
-#include <linux/platform_data/eth_ixp4xx.h>
-
-#include <asm/types.h>
-
-#ifndef	__ARMEB__
-#define	REG_OFFSET	0
-#else
-#define	REG_OFFSET	3
-#endif
-
-/*
- * Expansion bus memory regions
- */
-#define IXP4XX_EXP_BUS_BASE_PHYS	(0x50000000)
-
-/*
- * The expansion bus on the IXP4xx can be configured for either 16 or
- * 32MB windows and the CS offset for each region changes based on the
- * current configuration. This means that we cannot simply hardcode
- * each offset. ixp4xx_sys_init() looks at the expansion bus configuration
- * as setup by the bootloader to determine our window size.
- */
-extern unsigned long ixp4xx_exp_bus_size;
-
-#define	IXP4XX_EXP_BUS_BASE(region)\
-		(IXP4XX_EXP_BUS_BASE_PHYS + ((region) * ixp4xx_exp_bus_size))
-
-#define IXP4XX_EXP_BUS_END(region)\
-		(IXP4XX_EXP_BUS_BASE(region) + ixp4xx_exp_bus_size - 1)
-
-/* Those macros can be used to adjust timing and configure
- * other features for each region.
- */
-
-#define IXP4XX_EXP_BUS_RECOVERY_T(x)	(((x) & 0x0f) << 16)
-#define IXP4XX_EXP_BUS_HOLD_T(x)	(((x) & 0x03) << 20)
-#define IXP4XX_EXP_BUS_STROBE_T(x)	(((x) & 0x0f) << 22)
-#define IXP4XX_EXP_BUS_SETUP_T(x)	(((x) & 0x03) << 26)
-#define IXP4XX_EXP_BUS_ADDR_T(x)	(((x) & 0x03) << 28)
-#define IXP4XX_EXP_BUS_SIZE(x)		(((x) & 0x0f) << 10)
-#define IXP4XX_EXP_BUS_CYCLES(x)	(((x) & 0x03) << 14)
-
-#define IXP4XX_EXP_BUS_CS_EN		(1L << 31)
-#define IXP4XX_EXP_BUS_BYTE_RD16	(1L << 6)
-#define IXP4XX_EXP_BUS_HRDY_POL		(1L << 5)
-#define IXP4XX_EXP_BUS_MUX_EN		(1L << 4)
-#define IXP4XX_EXP_BUS_SPLT_EN		(1L << 3)
-#define IXP4XX_EXP_BUS_WR_EN		(1L << 1)
-#define IXP4XX_EXP_BUS_BYTE_EN		(1L << 0)
-
-#define IXP4XX_EXP_BUS_CYCLES_INTEL	0x00
-#define IXP4XX_EXP_BUS_CYCLES_MOTOROLA	0x01
-#define IXP4XX_EXP_BUS_CYCLES_HPI	0x02
-
-#define IXP4XX_FLASH_WRITABLE	(0x2)
-#define IXP4XX_FLASH_DEFAULT	(0xbcd23c40)
-#define IXP4XX_FLASH_WRITE	(0xbcd23c42)
-
-/*
- * Clock Speed Definitions.
- */
-#define IXP4XX_PERIPHERAL_BUS_CLOCK 	(66) /* 66MHzi APB BUS   */ 
-#define IXP4XX_UART_XTAL        	14745600
-
-/*
- * Frequency of clock used for primary clocksource
- */
-extern unsigned long ixp4xx_timer_freq;
-
-/*
- * Functions used by platform-level setup code
- */
-extern void ixp4xx_map_io(void);
-extern void ixp4xx_init_early(void);
-extern void ixp4xx_init_irq(void);
-extern void ixp4xx_sys_init(void);
-extern void ixp4xx_timer_init(void);
-extern void ixp4xx_restart(enum reboot_mode, const char *);
-extern void ixp4xx_pci_preinit(void);
-struct pci_sys_data;
-extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
-extern struct pci_ops ixp4xx_ops;
-
-#endif // __ASSEMBLY__
-

arch/arm/mach-ixp4xx/include/mach/udc.h

-/*
- * arch/arm/mach-ixp4xx/include/mach/udc.h
- *
- */
-#include <linux/platform_data/pxa2xx_udc.h>
-
-extern void ixp4xx_set_udc_info(struct pxa2xx_udc_mach_info *info);
-

arch/arm/mach-ixp4xx/include/mach/uncompress.h

@@ -9,10 +9,12 @@
 #ifndef _ARCH_UNCOMPRESS_H_
 #define _ARCH_UNCOMPRESS_H_
 
-#include "ixp4xx-regs.h"
 #include <asm/mach-types.h>
 #include <linux/serial_reg.h>
 
+#define IXP4XX_UART1_BASE_PHYS 0xc8000000
+#define IXP4XX_UART2_BASE_PHYS 0xc8001000
+
 #define TX_DONE (UART_LSR_TEMT|UART_LSR_THRE)
 
 volatile u32* uart_base;

arch/arm/mach-ixp4xx/irqs.h

-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * arch/arm/mach-ixp4xx/include/mach/irqs.h 
- *
- * IRQ definitions for IXP4XX based systems
- *
- * Copyright (C) 2002 Intel Corporation.
- * Copyright (C) 2003 MontaVista Software, Inc.
- */
-
-#ifndef _ARCH_IXP4XX_IRQS_H_
-#define _ARCH_IXP4XX_IRQS_H_
-
-#define IRQ_IXP4XX_BASE		16
-
-#define IRQ_IXP4XX_NPEA		(IRQ_IXP4XX_BASE + 0)
-#define IRQ_IXP4XX_NPEB		(IRQ_IXP4XX_BASE + 1)
-#define IRQ_IXP4XX_NPEC		(IRQ_IXP4XX_BASE + 2)
-#define IRQ_IXP4XX_QM1		(IRQ_IXP4XX_BASE + 3)
-#define IRQ_IXP4XX_QM2		(IRQ_IXP4XX_BASE + 4)
-#define IRQ_IXP4XX_TIMER1	(IRQ_IXP4XX_BASE + 5)
-#define IRQ_IXP4XX_GPIO0	(IRQ_IXP4XX_BASE + 6)
-#define IRQ_IXP4XX_GPIO1	(IRQ_IXP4XX_BASE + 7)
-#define IRQ_IXP4XX_PCI_INT	(IRQ_IXP4XX_BASE + 8)
-#define IRQ_IXP4XX_PCI_DMA1	(IRQ_IXP4XX_BASE + 9)
-#define IRQ_IXP4XX_PCI_DMA2	(IRQ_IXP4XX_BASE + 10)
-#define IRQ_IXP4XX_TIMER2	(IRQ_IXP4XX_BASE + 11)
-#define IRQ_IXP4XX_USB		(IRQ_IXP4XX_BASE + 12)
-#define IRQ_IXP4XX_UART2	(IRQ_IXP4XX_BASE + 13)
-#define IRQ_IXP4XX_TIMESTAMP	(IRQ_IXP4XX_BASE + 14)
-#define IRQ_IXP4XX_UART1	(IRQ_IXP4XX_BASE + 15)
-#define IRQ_IXP4XX_WDOG		(IRQ_IXP4XX_BASE + 16)
-#define IRQ_IXP4XX_AHB_PMU	(IRQ_IXP4XX_BASE + 17)
-#define IRQ_IXP4XX_XSCALE_PMU	(IRQ_IXP4XX_BASE + 18)
-#define IRQ_IXP4XX_GPIO2	(IRQ_IXP4XX_BASE + 19)
-#define IRQ_IXP4XX_GPIO3	(IRQ_IXP4XX_BASE + 20)
-#define IRQ_IXP4XX_GPIO4	(IRQ_IXP4XX_BASE + 21)
-#define IRQ_IXP4XX_GPIO5	(IRQ_IXP4XX_BASE + 22)
-#define IRQ_IXP4XX_GPIO6	(IRQ_IXP4XX_BASE + 23)
-#define IRQ_IXP4XX_GPIO7	(IRQ_IXP4XX_BASE + 24)
-#define IRQ_IXP4XX_GPIO8	(IRQ_IXP4XX_BASE + 25)
-#define IRQ_IXP4XX_GPIO9	(IRQ_IXP4XX_BASE + 26)
-#define IRQ_IXP4XX_GPIO10	(IRQ_IXP4XX_BASE + 27)
-#define IRQ_IXP4XX_GPIO11	(IRQ_IXP4XX_BASE + 28)
-#define IRQ_IXP4XX_GPIO12	(IRQ_IXP4XX_BASE + 29)
-#define IRQ_IXP4XX_SW_INT1	(IRQ_IXP4XX_BASE + 30)
-#define IRQ_IXP4XX_SW_INT2	(IRQ_IXP4XX_BASE + 31)
-#define IRQ_IXP4XX_USB_HOST	(IRQ_IXP4XX_BASE + 32)
-#define IRQ_IXP4XX_I2C		(IRQ_IXP4XX_BASE + 33)
-#define IRQ_IXP4XX_SSP		(IRQ_IXP4XX_BASE + 34)
-#define IRQ_IXP4XX_TSYNC	(IRQ_IXP4XX_BASE + 35)
-#define IRQ_IXP4XX_EAU_DONE	(IRQ_IXP4XX_BASE + 36)
-#define IRQ_IXP4XX_SHA_DONE	(IRQ_IXP4XX_BASE + 37)
-#define IRQ_IXP4XX_SWCP_PE	(IRQ_IXP4XX_BASE + 58)
-#define IRQ_IXP4XX_QM_PE	(IRQ_IXP4XX_BASE + 60)
-#define IRQ_IXP4XX_MCU_ECC	(IRQ_IXP4XX_BASE + 61)
-#define IRQ_IXP4XX_EXP_PE	(IRQ_IXP4XX_BASE + 62)
-
-#define _IXP4XX_GPIO_IRQ(n)	(IRQ_IXP4XX_GPIO ## n)
-#define IXP4XX_GPIO_IRQ(n)	_IXP4XX_GPIO_IRQ(n)
-
-#define	XSCALE_PMU_IRQ		(IRQ_IXP4XX_XSCALE_PMU)
-
-#endif

arch/arm/mach-mmp/sram.c

@@ -72,6 +72,8 @@ static int sram_probe(struct platform_device *pdev)
 	if (!info)
 		return -ENOMEM;
 
+	platform_set_drvdata(pdev, info);
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res == NULL) {
 		dev_err(&pdev->dev, "no memory resource defined\n");
@@ -107,8 +109,6 @@ static int sram_probe(struct platform_device *pdev)
 	list_add(&info->node, &sram_bank_list);
 	mutex_unlock(&sram_lock);
 
-	platform_set_drvdata(pdev, info);
-
 	dev_info(&pdev->dev, "initialized\n");
 	return 0;
 
@@ -127,17 +127,19 @@ static int sram_remove(struct platform_device *pdev)
 	struct sram_bank_info *info;
 
 	info = platform_get_drvdata(pdev);
-	if (info == NULL)
-		return -ENODEV;
 
-	mutex_lock(&sram_lock);
-	list_del(&info->node);
-	mutex_unlock(&sram_lock);
+	if (info->sram_size) {
+		mutex_lock(&sram_lock);
+		list_del(&info->node);
+		mutex_unlock(&sram_lock);
+
+		gen_pool_destroy(info->gpool);
+		iounmap(info->sram_virt);
+		kfree(info->pool_name);
+	}
 
-	gen_pool_destroy(info->gpool);
-	iounmap(info->sram_virt);
-	kfree(info->pool_name);
 	kfree(info);
+
 	return 0;
 }
 

arch/arm/mach-mstar/Kconfig

 menuconfig ARCH_MSTARV7
 	bool "MStar/Sigmastar Armv7 SoC Support"
 	depends on ARCH_MULTI_V7
+	select ARM_ERRATA_814220
 	select ARM_GIC
 	select ARM_HEAVY_MB
 	select HAVE_ARM_ARCH_TIMER

arch/arm/mach-mv78xx0/irq.c

@@ -67,7 +67,6 @@ void __init mv78xx0_init_irq(void)
 	 * registers for core #1 are at an offset of 0x18 from those of
 	 * core #0.)
 	 */
-	orion_gpio_init(NULL, 0, 32, GPIO_VIRT_BASE,
-			mv78xx0_core_index() ? 0x18 : 0,
+	orion_gpio_init(0, 32, GPIO_VIRT_BASE, mv78xx0_core_index() ? 0x18 : 0,
 			IRQ_MV78XX0_GPIO_START, gpio0_irqs);
 }

arch/arm/mach-nspire/Kconfig

@@ -2,7 +2,6 @@
 config ARCH_NSPIRE
 	bool "TI-NSPIRE based"
 	depends on ARCH_MULTI_V4_V5
-	depends on MMU
 	select CPU_ARM926T
 	select GENERIC_IRQ_CHIP
 	select ARM_AMBA

arch/arm/mach-orion5x/Kconfig

 # SPDX-License-Identifier: GPL-2.0-only
 menuconfig ARCH_ORION5X
 	bool "Marvell Orion"
-	depends on MMU && ARCH_MULTI_V5
+	depends on ARCH_MULTI_V5
 	select CPU_FEROCEON
 	select GPIOLIB
 	select MVEBU_MBUS

arch/arm/mach-orion5x/irq.c

@@ -49,6 +49,6 @@ void __init orion5x_init_irq(void)
 	/*
 	 * Initialize gpiolib for GPIOs 0-31.
 	 */
-	orion_gpio_init(NULL, 0, 32, GPIO_VIRT_BASE, 0,
+	orion_gpio_init(0, 32, GPIO_VIRT_BASE, 0,
 			IRQ_ORION5X_GPIO_START, gpio0_irqs);
 }

arch/arm/mach-pxa/Kconfig

@@ -153,16 +153,6 @@ config GUMSTIX_AM300EPD
 
 endchoice
 
-config MACH_INTELMOTE2
-	bool "Intel Mote 2 Platform"
-	select IWMMXT
-	select PXA27x
-
-config MACH_STARGATE2
-	bool "Intel Stargate 2 Platform"
-	select IWMMXT
-	select PXA27x
-
 config MACH_XCEP
 	bool "Iskratel Electronics XCEP"
 	select MTD

arch/arm/mach-pxa/Makefile

@@ -45,8 +45,6 @@ obj-$(CONFIG_MACH_CAPC7117)     += capc7117.o mxm8x10.o
 obj-$(CONFIG_ARCH_GUMSTIX)	+= gumstix.o
 obj-$(CONFIG_GUMSTIX_AM200EPD)	+= am200epd.o
 obj-$(CONFIG_GUMSTIX_AM300EPD)	+= am300epd.o
-obj-$(CONFIG_MACH_INTELMOTE2)	+= stargate2.o
-obj-$(CONFIG_MACH_STARGATE2)	+= stargate2.o
 obj-$(CONFIG_MACH_XCEP)         += xcep.o
 obj-$(CONFIG_MACH_TRIZEPS4)	+= trizeps4.o
 obj-$(CONFIG_MACH_LOGICPD_PXA270)	+= lpd270.o

arch/arm/mach-pxa/include/mach/uncompress.h

@@ -58,9 +58,8 @@ static inline void arch_decomp_setup(void)
 	uart_shift = 2;
 	uart_is_pxa = 1;
 
-	if (machine_is_littleton() || machine_is_intelmote2()
-	    || machine_is_csb726() || machine_is_stargate2()
-	    || machine_is_cm_x300() || machine_is_balloon3())
+	if (machine_is_littleton() ||  machine_is_csb726() ||
+	    machine_is_cm_x300() || machine_is_balloon3())
 		uart_base = STUART_BASE;
 
 	if (machine_is_arcom_zeus()) {

arch/arm/mach-shmobile/Kconfig

 # SPDX-License-Identifier: GPL-2.0
 menuconfig ARCH_RENESAS
 	bool "Renesas ARM SoCs"
-	depends on ARCH_MULTI_V7 && MMU
+	depends on ARCH_MULTI_V7
 	select ARM_GIC
 	select GPIOLIB
 	select NO_IOPORT_MAP

arch/arm/mach-ux500/Kconfig

 # SPDX-License-Identifier: GPL-2.0
 menuconfig ARCH_U8500
 	bool "ST-Ericsson U8500 Series"
-	depends on ARCH_MULTI_V7 && MMU
+	depends on ARCH_MULTI_V7
 	select AB8500_CORE
 	select ABX500_CORE
 	select ARM_AMBA

arch/arm/plat-orion/gpio.c

@@ -516,8 +516,7 @@ static void orion_gpio_mask_irq(struct irq_data *d)
 	irq_gc_unlock(gc);
 }
 
-void __init orion_gpio_init(struct device_node *np,
-			    int gpio_base, int ngpio,
+void __init orion_gpio_init(int gpio_base, int ngpio,
 			    void __iomem *base, int mask_offset,
 			    int secondary_irq_base,
 			    int irqs[4])
@@ -545,9 +544,6 @@ void __init orion_gpio_init(struct device_node *np,
 	ochip->chip.base = gpio_base;
 	ochip->chip.ngpio = ngpio;
 	ochip->chip.can_sleep = 0;
-#ifdef CONFIG_OF
-	ochip->chip.of_node = np;
-#endif
 	ochip->chip.dbg_show = orion_gpio_dbg_show;
 
 	spin_lock_init(&ochip->lock);
@@ -605,7 +601,7 @@ void __init orion_gpio_init(struct device_node *np,
 			       IRQ_NOREQUEST, IRQ_LEVEL | IRQ_NOPROBE);
 
 	/* Setup irq domain on top of the generic chip. */
-	ochip->domain = irq_domain_add_legacy(np,
+	ochip->domain = irq_domain_add_legacy(NULL,
 					      ochip->chip.ngpio,
 					      ochip->secondary_irq_base,
 					      ochip->secondary_irq_base,

arch/arm/plat-orion/include/plat/orion-gpio.h

@@ -30,8 +30,7 @@ int orion_gpio_led_blink_set(struct gpio_desc *desc, int state,
 void orion_gpio_set_valid(unsigned pin, int mode);
 
 /* Initialize gpiolib. */
-void __init orion_gpio_init(struct device_node *np,
-			    int gpio_base, int ngpio,
+void __init orion_gpio_init(int gpio_base, int ngpio,
 			    void __iomem *base, int mask_offset,
 			    int secondary_irq_base,
 			    int irq[4]);

drivers/crypto/ixp4xx_crypto.c

@@ -33,7 +33,6 @@
 
 /* Intermittent includes, delete this after v5.14-rc1 */
 #include <linux/soc/ixp4xx/cpu.h>
-#include <mach/ixp4xx-regs.h>
 
 #define MAX_KEYLEN 32
 

drivers/net/ethernet/xscale/Kconfig

@@ -20,9 +20,9 @@ if NET_VENDOR_XSCALE
 
 config IXP4XX_ETH
 	tristate "Intel IXP4xx Ethernet support"
-	depends on ARM && ARCH_IXP4XX && IXP4XX_NPE && IXP4XX_QMGR
+	depends on ARM && ARCH_IXP4XX && IXP4XX_NPE && IXP4XX_QMGR && OF
 	select PHYLIB
-	select OF_MDIO if OF
+	select OF_MDIO
 	select NET_PTP_CLASSIFY
 	help
 	  Say Y here if you want to use built-in Ethernet ports

drivers/net/ethernet/xscale/ixp4xx_eth.c

@@ -30,7 +30,6 @@
 #include <linux/of.h>
 #include <linux/of_mdio.h>
 #include <linux/phy.h>
-#include <linux/platform_data/eth_ixp4xx.h>
 #include <linux/platform_device.h>
 #include <linux/ptp_classify.h>
 #include <linux/slab.h>
@@ -38,6 +37,11 @@
 #include <linux/soc/ixp4xx/npe.h>
 #include <linux/soc/ixp4xx/qmgr.h>
 #include <linux/soc/ixp4xx/cpu.h>
+#include <linux/types.h>
+
+#define IXP4XX_ETH_NPEA		0x00
+#define IXP4XX_ETH_NPEB		0x10
+#define IXP4XX_ETH_NPEC		0x20
 
 #include "ixp46x_ts.h"
 
@@ -147,6 +151,16 @@ typedef void buffer_t;
 #define free_buffer_irq kfree
 #endif
 
+/* Information about built-in Ethernet MAC interfaces */
+struct eth_plat_info {
+	u8 phy;		/* MII PHY ID, 0 - 31 */
+	u8 rxq;		/* configurable, currently 0 - 31 only */
+	u8 txreadyq;
+	u8 hwaddr[6];
+	u8 npe;		/* NPE instance used by this interface */
+	bool has_mdio;	/* If this instance has an MDIO bus */
+};
+
 struct eth_regs {
 	u32 tx_control[2], __res1[2];		/* 000 */
 	u32 rx_control[2], __res2[2];		/* 010 */
@@ -1366,7 +1380,6 @@ static const struct net_device_ops ixp4xx_netdev_ops = {
 	.ndo_validate_addr = eth_validate_addr,
 };
 
-#ifdef CONFIG_OF
 static struct eth_plat_info *ixp4xx_of_get_platdata(struct device *dev)
 {
 	struct device_node *np = dev->of_node;
@@ -1417,12 +1430,6 @@ static struct eth_plat_info *ixp4xx_of_get_platdata(struct device *dev)
 
 	return plat;
 }
-#else
-static struct eth_plat_info *ixp4xx_of_get_platdata(struct device *dev)
-{
-	return NULL;
-}
-#endif
 
 static int ixp4xx_eth_probe(struct platform_device *pdev)
 {
@@ -1434,49 +1441,9 @@ static int ixp4xx_eth_probe(struct platform_device *pdev)
 	struct port *port;
 	int err;
 
-	if (np) {
-		plat = ixp4xx_of_get_platdata(dev);
-		if (!plat)
-			return -ENODEV;
-	} else {
-		plat = dev_get_platdata(dev);
-		if (!plat)
-			return -ENODEV;
-		plat->npe = pdev->id;
-		switch (plat->npe) {
-		case IXP4XX_ETH_NPEA:
-			/* If the MDIO bus is not up yet, defer probe */
-			break;
-		case IXP4XX_ETH_NPEB:
-			/* On all except IXP43x, NPE-B is used for the MDIO bus.
-			 * If there is no NPE-B in the feature set, bail out,
-			 * else we have the MDIO bus here.
-			 */
-			if (!cpu_is_ixp43x()) {
-				if (!(ixp4xx_read_feature_bits() &
-				      IXP4XX_FEATURE_NPEB_ETH0))
-					return -ENODEV;
-				/* Else register the MDIO bus on NPE-B */
-				plat->has_mdio = true;
-			}
-			break;
-		case IXP4XX_ETH_NPEC:
-			/* IXP43x lacks NPE-B and uses NPE-C for the MDIO bus
-			 * access, if there is no NPE-C, no bus, nothing works,
-			 * so bail out.
-			 */
-			if (cpu_is_ixp43x()) {
-				if (!(ixp4xx_read_feature_bits() &
-				      IXP4XX_FEATURE_NPEC_ETH))
-					return -ENODEV;
-				/* Else register the MDIO bus on NPE-B */
-				plat->has_mdio = true;
-			}
-			break;
-		default:
-			return -ENODEV;
-		}
-	}
+	plat = ixp4xx_of_get_platdata(dev);
+	if (!plat)
+		return -ENODEV;
 
 	if (!(ndev = devm_alloc_etherdev(dev, sizeof(struct port))))
 		return -ENOMEM;
@@ -1530,21 +1497,7 @@ static int ixp4xx_eth_probe(struct platform_device *pdev)
 	__raw_writel(DEFAULT_CORE_CNTRL, &port->regs->core_control);
 	udelay(50);
 
-	if (np) {
-		phydev = of_phy_get_and_connect(ndev, np, ixp4xx_adjust_link);
-	} else {
-		phydev = mdiobus_get_phy(mdio_bus, plat->phy);
-		if (!phydev) {
-			err = -ENODEV;
-			dev_err(dev, "could not connect phydev (%d)\n", err);
-			goto err_free_mem;
-		}
-		err = phy_connect_direct(ndev, phydev, ixp4xx_adjust_link,
-					 PHY_INTERFACE_MODE_MII);
-		if (err)
-			goto err_free_mem;
-
-	}
+	phydev = of_phy_get_and_connect(ndev, np, ixp4xx_adjust_link);
 	if (!phydev) {
 		err = -ENODEV;
 		dev_err(dev, "no phydev\n");

drivers/net/ethernet/xscale/ptp_ixp46x.c

@@ -16,7 +16,6 @@
 #include <linux/ptp_clock_kernel.h>
 #include <linux/platform_device.h>
 #include <linux/soc/ixp4xx/cpu.h>
-#include <mach/ixp4xx-regs.h>
 
 #include "ixp46x_ts.h"
 

drivers/net/wan/Kconfig

@@ -293,7 +293,8 @@ config SLIC_DS26522
 config IXP4XX_HSS
 	tristate "Intel IXP4xx HSS (synchronous serial port) support"
 	depends on HDLC && IXP4XX_NPE && IXP4XX_QMGR
-	depends on ARCH_IXP4XX
+	depends on ARCH_IXP4XX && OF
+	select MFD_SYSCON
 	help
 	  Say Y here if you want to use built-in HSS ports
 	  on IXP4xx processor.

drivers/net/wan/ixp4xx_hss.c

@@ -16,8 +16,10 @@
 #include <linux/hdlc.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
 #include <linux/platform_device.h>
 #include <linux/poll.h>
+#include <linux/regmap.h>
 #include <linux/slab.h>
 #include <linux/gpio/consumer.h>
 #include <linux/of.h>
@@ -1389,9 +1391,28 @@ static int ixp4xx_hss_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct net_device *ndev;
 	struct device_node *np;
+	struct regmap *rmap;
 	struct port *port;
 	hdlc_device *hdlc;
 	int err;
+	u32 val;
+
+	/*
+	 * Go into the syscon and check if we have the HSS and HDLC
+	 * features available, else this will not work.
+	 */
+	rmap = syscon_regmap_lookup_by_compatible("syscon");
+	if (IS_ERR(rmap))
+		return dev_err_probe(dev, PTR_ERR(rmap),
+				     "failed to look up syscon\n");
+
+	val = cpu_ixp4xx_features(rmap);
+
+	if ((val & (IXP4XX_FEATURE_HDLC | IXP4XX_FEATURE_HSS)) !=
+	    (IXP4XX_FEATURE_HDLC | IXP4XX_FEATURE_HSS)) {
+		dev_err(dev, "HDLC and HSS feature unavailable in platform\n");
+		return -ENODEV;
+	}
 
 	np = dev->of_node;
 
@@ -1516,25 +1537,9 @@ static struct platform_driver ixp4xx_hss_driver = {
 	.probe		= ixp4xx_hss_probe,
 	.remove		= ixp4xx_hss_remove,
 };
-
-static int __init hss_init_module(void)
-{
-	if ((ixp4xx_read_feature_bits() &
-	     (IXP4XX_FEATURE_HDLC | IXP4XX_FEATURE_HSS)) !=
-	    (IXP4XX_FEATURE_HDLC | IXP4XX_FEATURE_HSS))
-		return -ENODEV;
-
-	return platform_driver_register(&ixp4xx_hss_driver);
-}
-
-static void __exit hss_cleanup_module(void)
-{
-	platform_driver_unregister(&ixp4xx_hss_driver);
-}
+module_platform_driver(ixp4xx_hss_driver);
 
 MODULE_AUTHOR("Krzysztof Halasa");
 MODULE_DESCRIPTION("Intel IXP4xx HSS driver");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("platform:ixp4xx_hss");
-module_init(hss_init_module);
-module_exit(hss_cleanup_module);

drivers/pcmcia/Kconfig

@@ -210,7 +210,7 @@ config PCMCIA_PXA2XX
 	depends on ARM && ARCH_PXA && PCMCIA
 	depends on (ARCH_LUBBOCK || MACH_MAINSTONE || PXA_SHARPSL \
 		    || ARCH_PXA_PALM || TRIZEPS_PCMCIA \
-		    || ARCOM_PCMCIA || ARCH_PXA_ESERIES || MACH_STARGATE2 \
+		    || ARCOM_PCMCIA || ARCH_PXA_ESERIES \
 		    || MACH_VPAC270 || MACH_BALLOON3 || MACH_COLIBRI \
 		    || MACH_COLIBRI320 || MACH_H4700)
 	select PCMCIA_SOC_COMMON

drivers/pcmcia/Makefile

@@ -56,7 +56,6 @@ pxa2xx-obj-$(CONFIG_MACH_PALMTX)		+= pxa2xx_palmtx.o
 pxa2xx-obj-$(CONFIG_MACH_PALMTC)		+= pxa2xx_palmtc.o
 pxa2xx-obj-$(CONFIG_MACH_PALMLD)		+= pxa2xx_palmld.o
 pxa2xx-obj-$(CONFIG_MACH_E740)			+= pxa2xx_e740.o
-pxa2xx-obj-$(CONFIG_MACH_STARGATE2)		+= pxa2xx_stargate2.o
 pxa2xx-obj-$(CONFIG_MACH_VPAC270)		+= pxa2xx_vpac270.o
 pxa2xx-obj-$(CONFIG_MACH_BALLOON3)		+= pxa2xx_balloon3.o
 pxa2xx-obj-$(CONFIG_MACH_COLIBRI)		+= pxa2xx_colibri.o

drivers/pcmcia/pxa2xx_stargate2.c

-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * linux/drivers/pcmcia/pxa2xx_stargate2.c
- *
- * Stargate 2 PCMCIA specific routines.
- *
- * Created:	December 6, 2005
- * Author:	Ed C. Epp
- * Copyright:	Intel Corp 2005
- *              Jonathan Cameron <jic23@cam.ac.uk> 2009
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <linux/gpio.h>
-
-#include <pcmcia/ss.h>
-
-#include <asm/irq.h>
-#include <asm/mach-types.h>
-
-#include "soc_common.h"
-
-#define SG2_S0_POWER_CTL	108
-#define SG2_S0_GPIO_RESET	82
-#define SG2_S0_GPIO_DETECT	53
-#define SG2_S0_GPIO_READY	81
-
-static struct gpio sg2_pcmcia_gpios[] = {
-	{ SG2_S0_GPIO_RESET, GPIOF_OUT_INIT_HIGH, "PCMCIA Reset" },
-	{ SG2_S0_POWER_CTL, GPIOF_OUT_INIT_HIGH, "PCMCIA Power Ctrl" },
-};
-
-static int sg2_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
-{
-	skt->stat[SOC_STAT_CD].gpio = SG2_S0_GPIO_DETECT;
-	skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
-	skt->stat[SOC_STAT_RDY].gpio = SG2_S0_GPIO_READY;
-	skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";
-	return 0;
-}
-
-static void sg2_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
-				    struct pcmcia_state *state)
-{
-	state->bvd1   = 0; /* not available - battery detect on card */
-	state->bvd2   = 0; /* not available */
-	state->vs_3v  = 1; /* not available - voltage detect for card */
-	state->vs_Xv  = 0; /* not available */
-}
-
-static int sg2_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
-				       const socket_state_t *state)
-{
-	/* Enable card power */
-	switch (state->Vcc) {
-	case 0:
-		/* sets power ctl register high */
-		gpio_set_value(SG2_S0_POWER_CTL, 1);
-		break;
-	case 33:
-	case 50:
-		/* sets power control register low (clear) */
-		gpio_set_value(SG2_S0_POWER_CTL, 0);
-		msleep(100);
-		break;
-	default:
-		pr_err("%s(): bad Vcc %u\n",
-		       __func__, state->Vcc);
-		return -1;
-	}
-
-	/* reset */
-	gpio_set_value(SG2_S0_GPIO_RESET, !!(state->flags & SS_RESET));
-
-	return 0;
-}
-
-static struct pcmcia_low_level sg2_pcmcia_ops __initdata = {
-	.owner			= THIS_MODULE,
-	.hw_init		= sg2_pcmcia_hw_init,
-	.socket_state		= sg2_pcmcia_socket_state,
-	.configure_socket	= sg2_pcmcia_configure_socket,
-	.nr			= 1,
-};
-
-static struct platform_device *sg2_pcmcia_device;
-
-static int __init sg2_pcmcia_init(void)
-{
-	int ret;
-
-	if (!machine_is_stargate2())
-		return -ENODEV;
-
-	sg2_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
-	if (!sg2_pcmcia_device)
-		return -ENOMEM;
-
-	ret = gpio_request_array(sg2_pcmcia_gpios, ARRAY_SIZE(sg2_pcmcia_gpios));
-	if (ret)
-		goto error_put_platform_device;
-
-	ret = platform_device_add_data(sg2_pcmcia_device,
-				       &sg2_pcmcia_ops,
-				       sizeof(sg2_pcmcia_ops));
-	if (ret)
-		goto error_free_gpios;
-
-	ret = platform_device_add(sg2_pcmcia_device);
-	if (ret)
-		goto error_free_gpios;
-
-	return 0;
-error_free_gpios:
-	gpio_free_array(sg2_pcmcia_gpios, ARRAY_SIZE(sg2_pcmcia_gpios));
-error_put_platform_device:
-	platform_device_put(sg2_pcmcia_device);
-
-	return ret;
-}
-
-static void __exit sg2_pcmcia_exit(void)
-{
-	platform_device_unregister(sg2_pcmcia_device);
-	gpio_free_array(sg2_pcmcia_gpios, ARRAY_SIZE(sg2_pcmcia_gpios));
-}
-
-fs_initcall(sg2_pcmcia_init);
-module_exit(sg2_pcmcia_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:pxa2xx-pcmcia");

drivers/soc/Kconfig

@@ -13,6 +13,7 @@ source "drivers/soc/imx/Kconfig"
 source "drivers/soc/ixp4xx/Kconfig"
 source "drivers/soc/litex/Kconfig"
 source "drivers/soc/mediatek/Kconfig"
+source "drivers/soc/microchip/Kconfig"
 source "drivers/soc/qcom/Kconfig"
 source "drivers/soc/renesas/Kconfig"
 source "drivers/soc/rockchip/Kconfig"

drivers/soc/Makefile

@@ -18,6 +18,7 @@ obj-y				+= ixp4xx/
 obj-$(CONFIG_SOC_XWAY)		+= lantiq/
 obj-$(CONFIG_LITEX_SOC_CONTROLLER) += litex/
 obj-y				+= mediatek/
+obj-y				+= microchip/
 obj-y				+= amlogic/
 obj-y				+= qcom/
 obj-y				+= renesas/

drivers/soc/ixp4xx/Kconfig

@@ -12,6 +12,7 @@ config IXP4XX_QMGR
 config IXP4XX_NPE
 	tristate "IXP4xx Network Processor Engine support"
 	select FW_LOADER
+	select MFD_SYSCON
 	help
 	  This driver supports IXP4xx built-in network coprocessors
 	  and is automatically selected by Ethernet and HSS drivers.

drivers/soc/ixp4xx/ixp4xx-npe.c

@@ -16,6 +16,7 @@
 #include <linux/firmware.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
@@ -284,6 +285,7 @@ static int __must_check npe_logical_reg_write32(struct npe *npe, u32 addr,
 
 static int npe_reset(struct npe *npe)
 {
+	u32 reset_bit = (IXP4XX_FEATURE_RESET_NPEA << npe->id);
 	u32 val, ctl, exec_count, ctx_reg2;
 	int i;
 
@@ -380,16 +382,19 @@ static int npe_reset(struct npe *npe)
 	__raw_writel(0, &npe->regs->action_points[3]);
 	__raw_writel(0, &npe->regs->watch_count);
 
-	val = ixp4xx_read_feature_bits();
+	/*
+	 * We need to work on cached values here because the register
+	 * will read inverted but needs to be written non-inverted.
+	 */
+	val = cpu_ixp4xx_features(npe->rmap);
 	/* reset the NPE */
-	ixp4xx_write_feature_bits(val &
-				  ~(IXP4XX_FEATURE_RESET_NPEA << npe->id));
+	regmap_write(npe->rmap, IXP4XX_EXP_CNFG2, val & ~reset_bit);
 	/* deassert reset */
-	ixp4xx_write_feature_bits(val |
-				  (IXP4XX_FEATURE_RESET_NPEA << npe->id));
+	regmap_write(npe->rmap, IXP4XX_EXP_CNFG2, val | reset_bit);
+
 	for (i = 0; i < MAX_RETRIES; i++) {
-		if (ixp4xx_read_feature_bits() &
-		    (IXP4XX_FEATURE_RESET_NPEA << npe->id))
+		val = cpu_ixp4xx_features(npe->rmap);
+		if (val & reset_bit)
 			break;	/* NPE is back alive */
 		udelay(1);
 	}
@@ -683,6 +688,14 @@ static int ixp4xx_npe_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	struct resource *res;
+	struct regmap *rmap;
+	u32 val;
+
+	/* This system has only one syscon, so fetch it */
+	rmap = syscon_regmap_lookup_by_compatible("syscon");
+	if (IS_ERR(rmap))
+		return dev_err_probe(dev, PTR_ERR(rmap),
+				     "failed to look up syscon\n");
 
 	for (i = 0; i < NPE_COUNT; i++) {
 		struct npe *npe = &npe_tab[i];
@@ -691,8 +704,9 @@ static int ixp4xx_npe_probe(struct platform_device *pdev)
 		if (!res)
 			return -ENODEV;
 
-		if (!(ixp4xx_read_feature_bits() &
-		      (IXP4XX_FEATURE_RESET_NPEA << i))) {
+		val = cpu_ixp4xx_features(rmap);
+
+		if (!(val & (IXP4XX_FEATURE_RESET_NPEA << i))) {
 			dev_info(dev, "NPE%d at %pR not available\n",
 				 i, res);
 			continue; /* NPE already disabled or not present */
@@ -700,6 +714,7 @@ static int ixp4xx_npe_probe(struct platform_device *pdev)
 		npe->regs = devm_ioremap_resource(dev, res);
 		if (IS_ERR(npe->regs))
 			return PTR_ERR(npe->regs);
+		npe->rmap = rmap;
 
 		if (npe_reset(npe)) {
 			dev_info(dev, "NPE%d at %pR does not reset\n",

drivers/soc/microchip/Kconfig

+config POLARFIRE_SOC_SYS_CTRL
+	tristate "POLARFIRE_SOC_SYS_CTRL"
+	depends on POLARFIRE_SOC_MAILBOX
+	help
+	  This driver adds support for the PolarFire SoC (MPFS) system controller.
+
+	  To compile this driver as a module, choose M here. the
+	  module will be called mpfs_system_controller.
+
+	  If unsure, say N.

drivers/soc/microchip/Makefile

+obj-$(CONFIG_POLARFIRE_SOC_SYS_CTRL)	+= mpfs-sys-controller.o

include/linux/clk/at91_pmc.h

@@ -78,6 +78,10 @@
 #define		AT91_PMC_MAINRDY	(1	<< 16)		/* Main Clock Ready */
 
 #define	AT91_CKGR_PLLAR		0x28			/* PLL A Register */
+
+#define	AT91_PMC_RATIO		0x2c			/* Processor clock ratio register [SAMA7G5 only] */
+#define		AT91_PMC_RATIO_RATIO	(0xf)		/* CPU clock ratio. */
+
 #define	AT91_CKGR_PLLBR		0x2c			/* PLL B Register */
 #define		AT91_PMC_DIV		(0xff  <<  0)		/* Divider */
 #define		AT91_PMC_PLLCOUNT	(0x3f  <<  8)		/* PLL Counter */

include/linux/platform_data/eth_ixp4xx.h

-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __PLATFORM_DATA_ETH_IXP4XX
-#define __PLATFORM_DATA_ETH_IXP4XX
-
-#include <linux/types.h>
-
-#define IXP4XX_ETH_NPEA		0x00
-#define IXP4XX_ETH_NPEB		0x10
-#define IXP4XX_ETH_NPEC		0x20
-
-/* Information about built-in Ethernet MAC interfaces */
-struct eth_plat_info {
-	u8 phy;		/* MII PHY ID, 0 - 31 */
-	u8 rxq;		/* configurable, currently 0 - 31 only */
-	u8 txreadyq;
-	u8 hwaddr[6];
-	u8 npe;		/* NPE instance used by this interface */
-	bool has_mdio;	/* If this instance has an MDIO bus */
-};
-
-#endif

include/linux/platform_data/wan_ixp4xx_hss.h

-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __PLATFORM_DATA_WAN_IXP4XX_HSS_H
-#define __PLATFORM_DATA_WAN_IXP4XX_HSS_H
-
-#include <linux/types.h>
-
-/* Information about built-in HSS (synchronous serial) interfaces */
-struct hss_plat_info {
-	int (*set_clock)(int port, unsigned int clock_type);
-	int (*open)(int port, void *pdev,
-		    void (*set_carrier_cb)(void *pdev, int carrier));
-	void (*close)(int port, void *pdev);
-	u8 txreadyq;
-	u32 timer_freq;
-};
-
-#endif

include/linux/soc/ixp4xx/npe.h

@@ -3,6 +3,7 @@
 #define __IXP4XX_NPE_H
 
 #include <linux/kernel.h>
+#include <linux/regmap.h>
 
 extern const char *npe_names[];
 
@@ -17,6 +18,7 @@ struct npe_regs {
 
 struct npe {
 	struct npe_regs __iomem *regs;
+	struct regmap *rmap;
 	int id;
 	int valid;
 };

include/soc/microchip/mpfs.h

@@ -34,9 +34,9 @@ struct mpfs_mss_response {
 
 #if IS_ENABLED(CONFIG_POLARFIRE_SOC_SYS_CTRL)
 
-int mpfs_blocking_transaction(struct mpfs_sys_controller *mpfs_client, void *msg);
+int mpfs_blocking_transaction(struct mpfs_sys_controller *mpfs_client, struct mpfs_mss_msg *msg);
 
-struct mpfs_sys_controller *mpfs_sys_controller_get(struct device_node *mailbox_node);
+struct mpfs_sys_controller *mpfs_sys_controller_get(struct device *dev);
 
 #endif /* if IS_ENABLED(CONFIG_POLARFIRE_SOC_SYS_CTRL) */
 

kernel/dma/mapping.c

@@ -745,7 +745,6 @@ int dma_set_mask(struct device *dev, u64 mask)
 }
 EXPORT_SYMBOL(dma_set_mask);
 
-#ifndef CONFIG_ARCH_HAS_DMA_SET_COHERENT_MASK
 int dma_set_coherent_mask(struct device *dev, u64 mask)
 {
 	/*
@@ -761,7 +760,6 @@ int dma_set_coherent_mask(struct device *dev, u64 mask)
 	return 0;
 }
 EXPORT_SYMBOL(dma_set_coherent_mask);
-#endif
 
 size_t dma_max_mapping_size(struct device *dev)
 {