Merge tag 'v4.10-rockchip-clk2' of...

Merge tag 'v4.10-rockchip-clk2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next

Pull rockchip clk driver updates from Heiko Stuebner:

A new clock controller for the rk1108 soc (single-core Cortex-A7+DSP),
a fix making sure the cpuclk rate is actually valid, before trying to
set it and a copy-paste fix for the rk3399's testclk.

* tag 'v4.10-rockchip-clk2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  clk: rockchip: add clock controller for rk1108
  dt-bindings: add documentation for rk1108 cru
  clk: rockchip: add dt-binding header for rk1108
  clk: rockchip: fix copy-paste error in rk3399 testclk
  clk: rockchip: validity should be checked prior to cpu clock rate change

Documentation/devicetree/bindings/clock/rockchip,rk1108-cru.txt

+* Rockchip RK1108 Clock and Reset Unit
+
+The RK1108 clock controller generates and supplies clock to various
+controllers within the SoC and also implements a reset controller for SoC
+peripherals.
+
+Required Properties:
+
+- compatible: should be "rockchip,rk1108-cru"
+- reg: physical base address of the controller and length of memory mapped
+  region.
+- #clock-cells: should be 1.
+- #reset-cells: should be 1.
+
+Optional Properties:
+
+- rockchip,grf: phandle to the syscon managing the "general register files"
+  If missing pll rates are not changeable, due to the missing pll lock status.
+
+Each clock is assigned an identifier and client nodes can use this identifier
+to specify the clock which they consume. All available clocks are defined as
+preprocessor macros in the dt-bindings/clock/rk1108-cru.h headers and can be
+used in device tree sources. Similar macros exist for the reset sources in
+these files.
+
+External clocks:
+
+There are several clocks that are generated outside the SoC. It is expected
+that they are defined using standard clock bindings with following
+clock-output-names:
+ - "xin24m" - crystal input - required,
+ - "ext_vip" - external VIP clock - optional
+ - "ext_i2s" - external I2S clock - optional
+ - "ext_gmac" - external GMAC clock - optional
+ - "hdmiphy" - external clock input derived from HDMI PHY - optional
+ - "usbphy" - external clock input derived from USB PHY - optional
+
+Example: Clock controller node:
+
+	cru: cru@20200000 {
+		compatible = "rockchip,rk1108-cru";
+		reg = <0x20200000 0x1000>;
+		rockchip,grf = <&grf>;
+
+		#clock-cells = <1>;
+		#reset-cells = <1>;
+	};
+
+Example: UART controller node that consumes the clock generated by the clock
+  controller:
+
+	uart0: serial@10230000 {
+		compatible = "rockchip,rk1108-uart", "snps,dw-apb-uart";
+		reg = <0x10230000 0x100>;
+		interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		clocks = <&cru SCLK_UART0>;
+	};

drivers/clk/rockchip/Makefile

@@ -11,6 +11,7 @@ obj-y	+= clk-mmc-phase.o
 obj-y	+= clk-ddr.o
 obj-$(CONFIG_RESET_CONTROLLER)	+= softrst.o
 
+obj-y	+= clk-rk1108.o
 obj-y	+= clk-rk3036.o
 obj-y	+= clk-rk3188.o
 obj-y	+= clk-rk3228.o

drivers/clk/rockchip/clk-cpu.c

@@ -124,9 +124,18 @@ static int rockchip_cpuclk_pre_rate_change(struct rockchip_cpuclk *cpuclk,
 					   struct clk_notifier_data *ndata)
 {
 	const struct rockchip_cpuclk_reg_data *reg_data = cpuclk->reg_data;
+	const struct rockchip_cpuclk_rate_table *rate;
 	unsigned long alt_prate, alt_div;
 	unsigned long flags;
 
+	/* check validity of the new rate */
+	rate = rockchip_get_cpuclk_settings(cpuclk, ndata->new_rate);
+	if (!rate) {
+		pr_err("%s: Invalid rate : %lu for cpuclk\n",
+		       __func__, ndata->new_rate);
+		return -EINVAL;
+	}
+
 	alt_prate = clk_get_rate(cpuclk->alt_parent);
 
 	spin_lock_irqsave(cpuclk->lock, flags);

drivers/clk/rockchip/clk-rk3399.c

@@ -1383,8 +1383,8 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = {
 	/* clk_test */
 	/* clk_test_pre is controlled by CRU_MISC_CON[3] */
 	COMPOSITE_NOMUX(0, "clk_test", "clk_test_pre", CLK_IGNORE_UNUSED,
-			RK3368_CLKSEL_CON(58), 0, 5, DFLAGS,
-			RK3368_CLKGATE_CON(13), 11, GFLAGS),
+			RK3399_CLKSEL_CON(58), 0, 5, DFLAGS,
+			RK3399_CLKGATE_CON(13), 11, GFLAGS),
 
 	/* ddrc */
 	GATE(0, "clk_ddrc_lpll_src", "lpll", 0, RK3399_CLKGATE_CON(3),

drivers/clk/rockchip/clk.h

@@ -34,6 +34,21 @@ struct clk;
 #define HIWORD_UPDATE(val, mask, shift) \
 		((val) << (shift) | (mask) << ((shift) + 16))
 
+/* register positions shared by RK1108, RK2928, RK3036, RK3066, RK3188 and RK3228 */
+#define RK1108_PLL_CON(x)		((x) * 0x4)
+#define RK1108_CLKSEL_CON(x)		((x) * 0x4 + 0x60)
+#define RK1108_CLKGATE_CON(x)		((x) * 0x4 + 0x120)
+#define RK1108_SOFTRST_CON(x)		((x) * 0x4 + 0x180)
+#define RK1108_GLB_SRST_FST		0x1c0
+#define RK1108_GLB_SRST_SND		0x1c4
+#define RK1108_MISC_CON			0x1cc
+#define RK1108_SDMMC_CON0		0x1d8
+#define RK1108_SDMMC_CON1		0x1dc
+#define RK1108_SDIO_CON0		0x1e0
+#define RK1108_SDIO_CON1		0x1e4
+#define RK1108_EMMC_CON0		0x1e8
+#define RK1108_EMMC_CON1		0x1ec
+
 #define RK2928_PLL_CON(x)		((x) * 0x4)
 #define RK2928_MODE_CON		0x40
 #define RK2928_CLKSEL_CON(x)	((x) * 0x4 + 0x44)

include/dt-bindings/clock/rk1108-cru.h

+/*
+ * Copyright (c) 2016 Rockchip Electronics Co. Ltd.
+ * Author: Shawn Lin <shawn.lin@rock-chips.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _DT_BINDINGS_CLK_ROCKCHIP_RK1108_H
+#define _DT_BINDINGS_CLK_ROCKCHIP_RK1108_H
+
+/* pll id */
+#define PLL_APLL			0
+#define PLL_DPLL			1
+#define PLL_GPLL			2
+#define ARMCLK				3
+
+/* sclk gates (special clocks) */
+#define SCLK_SPI0			65
+#define SCLK_NANDC			67
+#define SCLK_SDMMC			68
+#define SCLK_SDIO			69
+#define SCLK_EMMC			71
+#define SCLK_UART0			72
+#define SCLK_UART1			73
+#define SCLK_UART2			74
+#define SCLK_I2S0			75
+#define SCLK_I2S1			76
+#define SCLK_I2S2			77
+#define SCLK_TIMER0			78
+#define SCLK_TIMER1			79
+#define SCLK_SFC			80
+#define SCLK_SDMMC_DRV			81
+#define SCLK_SDIO_DRV			82
+#define SCLK_EMMC_DRV			83
+#define SCLK_SDMMC_SAMPLE		84
+#define SCLK_SDIO_SAMPLE		85
+#define SCLK_EMMC_SAMPLE		86
+
+/* aclk gates */
+#define ACLK_DMAC			192
+#define ACLK_PRE			193
+#define ACLK_CORE			194
+#define ACLK_ENMCORE			195
+
+/* pclk gates */
+#define PCLK_GPIO1			256
+#define PCLK_GPIO2			257
+#define PCLK_GPIO3			258
+#define PCLK_GRF			259
+#define PCLK_I2C1			260
+#define PCLK_I2C2			261
+#define PCLK_I2C3			262
+#define PCLK_SPI			263
+#define PCLK_SFC			264
+#define PCLK_UART0			265
+#define PCLK_UART1			266
+#define PCLK_UART2			267
+#define PCLK_TSADC			268
+#define PCLK_PWM			269
+#define PCLK_TIMER			270
+#define PCLK_PERI			271
+
+/* hclk gates */
+#define HCLK_I2S0_8CH			320
+#define HCLK_I2S1_8CH			321
+#define HCLK_I2S2_2CH			322
+#define HCLK_NANDC			323
+#define HCLK_SDMMC			324
+#define HCLK_SDIO			325
+#define HCLK_EMMC			326
+#define HCLK_PERI			327
+#define HCLK_SFC			328
+
+#define CLK_NR_CLKS			(HCLK_SFC + 1)
+
+/* reset id */
+#define SRST_CORE_PO_AD		0
+#define SRST_CORE_AD			1
+#define SRST_L2_AD			2
+#define SRST_CPU_NIU_AD		3
+#define SRST_CORE_PO			4
+#define SRST_CORE			5
+#define SRST_L2			6
+#define SRST_CORE_DBG			8
+#define PRST_DBG			9
+#define RST_DAP			10
+#define PRST_DBG_NIU			11
+#define ARST_STRC_SYS_AD		15
+
+#define SRST_DDRPHY_CLKDIV		16
+#define SRST_DDRPHY			17
+#define PRST_DDRPHY			18
+#define PRST_HDMIPHY			19
+#define PRST_VDACPHY			20
+#define PRST_VADCPHY			21
+#define PRST_MIPI_CSI_PHY		22
+#define PRST_MIPI_DSI_PHY		23
+#define PRST_ACODEC			24
+#define ARST_BUS_NIU			25
+#define PRST_TOP_NIU			26
+#define ARST_INTMEM			27
+#define HRST_ROM			28
+#define ARST_DMAC			29
+#define SRST_MSCH_NIU			30
+#define PRST_MSCH_NIU			31
+
+#define PRST_DDRUPCTL			32
+#define NRST_DDRUPCTL			33
+#define PRST_DDRMON			34
+#define HRST_I2S0_8CH			35
+#define MRST_I2S0_8CH			36
+#define HRST_I2S1_2CH			37
+#define MRST_IS21_2CH			38
+#define HRST_I2S2_2CH			39
+#define MRST_I2S2_2CH			40
+#define HRST_CRYPTO			41
+#define SRST_CRYPTO			42
+#define PRST_SPI			43
+#define SRST_SPI			44
+#define PRST_UART0			45
+#define PRST_UART1			46
+#define PRST_UART2			47
+
+#define SRST_UART0			48
+#define SRST_UART1			49
+#define SRST_UART2			50
+#define PRST_I2C1			51
+#define PRST_I2C2			52
+#define PRST_I2C3			53
+#define SRST_I2C1			54
+#define SRST_I2C2			55
+#define SRST_I2C3			56
+#define PRST_PWM1			58
+#define SRST_PWM1			60
+#define PRST_WDT			61
+#define PRST_GPIO1			62
+#define PRST_GPIO2			63
+
+#define PRST_GPIO3			64
+#define PRST_GRF			65
+#define PRST_EFUSE			66
+#define PRST_EFUSE512			67
+#define PRST_TIMER0			68
+#define SRST_TIMER0			69
+#define SRST_TIMER1			70
+#define PRST_TSADC			71
+#define SRST_TSADC			72
+#define PRST_SARADC			73
+#define SRST_SARADC			74
+#define HRST_SYSBUS			75
+#define PRST_USBGRF			76
+
+#define ARST_PERIPH_NIU		80
+#define HRST_PERIPH_NIU		81
+#define PRST_PERIPH_NIU		82
+#define HRST_PERIPH			83
+#define HRST_SDMMC			84
+#define HRST_SDIO			85
+#define HRST_EMMC			86
+#define HRST_NANDC			87
+#define NRST_NANDC			88
+#define HRST_SFC			89
+#define SRST_SFC			90
+#define ARST_GMAC			91
+#define HRST_OTG			92
+#define SRST_OTG			93
+#define SRST_OTG_ADP			94
+#define HRST_HOST0			95
+
+#define HRST_HOST0_AUX			96
+#define HRST_HOST0_ARB			97
+#define SRST_HOST0_EHCIPHY		98
+#define SRST_HOST0_UTMI		99
+#define SRST_USBPOR			100
+#define SRST_UTMI0			101
+#define SRST_UTMI1			102
+
+#define ARST_VIO0_NIU			102
+#define ARST_VIO1_NIU			103
+#define HRST_VIO_NIU			104
+#define PRST_VIO_NIU			105
+#define ARST_VOP			106
+#define HRST_VOP			107
+#define DRST_VOP			108
+#define ARST_IEP			109
+#define HRST_IEP			110
+#define ARST_RGA			111
+#define HRST_RGA			112
+#define SRST_RGA			113
+#define PRST_CVBS			114
+#define PRST_HDMI			115
+#define SRST_HDMI			116
+#define PRST_MIPI_DSI			117
+
+#define ARST_ISP_NIU			118
+#define HRST_ISP_NIU			119
+#define HRST_ISP			120
+#define SRST_ISP			121
+#define ARST_VIP0			122
+#define HRST_VIP0			123
+#define PRST_VIP0			124
+#define ARST_VIP1			125
+#define HRST_VIP1			126
+#define PRST_VIP1			127
+#define ARST_VIP2			128
+#define HRST_VIP2			129
+#define PRST_VIP2			120
+#define ARST_VIP3			121
+#define HRST_VIP3			122
+#define PRST_VIP4			123
+
+#define PRST_CIF1TO4			124
+#define SRST_CVBS_CLK			125
+#define HRST_CVBS			126
+
+#define ARST_VPU_NIU			140
+#define HRST_VPU_NIU			141
+#define ARST_VPU			142
+#define HRST_VPU			143
+#define ARST_RKVDEC_NIU		144
+#define HRST_RKVDEC_NIU		145
+#define ARST_RKVDEC			146
+#define HRST_RKVDEC			147
+#define SRST_RKVDEC_CABAC		148
+#define SRST_RKVDEC_CORE		149
+#define ARST_RKVENC_NIU		150
+#define HRST_RKVENC_NIU		151
+#define ARST_RKVENC			152
+#define HRST_RKVENC			153
+#define SRST_RKVENC_CORE		154
+
+#define SRST_DSP_CORE			156
+#define SRST_DSP_SYS			157
+#define SRST_DSP_GLOBAL		158
+#define SRST_DSP_OECM			159
+#define PRST_DSP_IOP_NIU		160
+#define ARST_DSP_EPP_NIU		161
+#define ARST_DSP_EDP_NIU		162
+#define PRST_DSP_DBG_NIU		163
+#define PRST_DSP_CFG_NIU		164
+#define PRST_DSP_GRF			165
+#define PRST_DSP_MAILBOX		166
+#define PRST_DSP_INTC			167
+#define PRST_DSP_PFM_MON		169
+#define SRST_DSP_PFM_MON		170
+#define ARST_DSP_EDAP_NIU		171
+
+#define SRST_PMU			172
+#define SRST_PMU_I2C0			173
+#define PRST_PMU_I2C0			174
+#define PRST_PMU_GPIO0			175
+#define PRST_PMU_INTMEM		176
+#define PRST_PMU_PWM0			177
+#define SRST_PMU_PWM0			178
+#define PRST_PMU_GRF			179
+#define SRST_PMU_NIU			180
+#define SRST_PMU_PVTM			181
+#define ARST_DSP_EDP_PERF		184
+#define ARST_DSP_EPP_PERF		185
+
+#endif /* _DT_BINDINGS_CLK_ROCKCHIP_RK1108_H */