Merge tag 'samsung-dt64-6.8-2' of...

Merge tag 'samsung-dt64-6.8-2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into soc/dt

Samsung DTS ARM64 changes for v6.8, part two

1. Tesla FSD: Add Multi Format Codec (MFC) device nodes, for accelerated
   video de/encoding.

2. Add initial Google Tensor GS101 SoC support. The GS101 SoC can be
   found on Google Pixel 6 phones.  Currently the DTS brings only basic
   support: core clock controllers, pin controllers, serial, watchdog
   and ARM core blocks.

* tag 'samsung-dt64-6.8-2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  MAINTAINERS: adjust file entry in GOOGLE TENSOR SoC SUPPORT
  MAINTAINERS: add entry for Google Tensor SoC
  arm64: dts: exynos: google: Add initial Oriole/pixel 6 board support
  arm64: dts: exynos: google: Add initial Google gs101 SoC support
  dt-bindings: arm: google: Add bindings for Google ARM platforms
  arm64: dts: fsd: Add MFC related DT enteries

Link: https://lore.kernel.org/r/20231220084722.22149-2-krzysztof.kozlowski@linaro.orgSigned-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/arm/google.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/google.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Google Tensor platforms
+
+maintainers:
+  - Peter Griffin <peter.griffin@linaro.org>
+
+description: |
+  ARM platforms using SoCs designed by Google branded "Tensor" used in Pixel
+  devices.
+
+  Currently upstream this is devices using "gs101" SoC which is found in Pixel
+  6, Pixel 6 Pro and Pixel 6a.
+
+  Google have a few different names for the SoC:
+  - Marketing name ("Tensor")
+  - Codename ("Whitechapel")
+  - SoC ID ("gs101")
+  - Die ID ("S5P9845")
+
+  Likewise there are a couple of names for the actual device
+  - Marketing name ("Pixel 6")
+  - Codename ("Oriole")
+
+  Devicetrees should use the lowercased SoC ID and lowercased board codename,
+  e.g. gs101 and gs101-oriole.
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - description: Google Pixel 6 / Oriole
+        items:
+          - enum:
+              - google,gs101-oriole
+          - const: google,gs101
+
+  # Bootloader requires empty ect node to be present
+  ect:
+    type: object
+    additionalProperties: false
+
+required:
+  - ect
+
+additionalProperties: true
+
+...

MAINTAINERS

@@ -9007,6 +9007,16 @@ S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux.git
 F:	drivers/firmware/google/
 
+GOOGLE TENSOR SoC SUPPORT
+M:	Peter Griffin <peter.griffin@linaro.org>
+L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+L:	linux-samsung-soc@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/clock/google,gs101-clock.yaml
+F:	arch/arm64/boot/dts/exynos/google/
+F:	drivers/clk/samsung/clk-gs101.c
+F:	include/dt-bindings/clock/google,gs101.h
+
 GPD POCKET FAN DRIVER
 M:	Hans de Goede <hdegoede@redhat.com>
 L:	platform-driver-x86@vger.kernel.org

arch/arm64/boot/dts/exynos/Makefile

 # SPDX-License-Identifier: GPL-2.0
+subdir-y += google
+
 dtb-$(CONFIG_ARCH_EXYNOS) += \
 	exynos5433-tm2.dtb		\
 	exynos5433-tm2e.dtb		\

arch/arm64/boot/dts/exynos/google/Makefile

+# SPDX-License-Identifier: GPL-2.0
+
+dtb-$(CONFIG_ARCH_EXYNOS) += \
+	gs101-oriole.dtb \

arch/arm64/boot/dts/exynos/google/gs101-oriole.dts

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Oriole Device Tree
+ *
+ * Copyright 2021-2023 Google LLC
+ * Copyright 2023 Linaro Ltd - <peter.griffin@linaro.org>
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include "gs101-pinctrl.h"
+#include "gs101.dtsi"
+
+/ {
+	model = "Oriole";
+	compatible = "google,gs101-oriole", "google,gs101";
+
+	aliases {
+		serial0 = &serial_0;
+	};
+
+	chosen {
+		/* Bootloader expects bootargs specified otherwise it crashes */
+		bootargs = "";
+		stdout-path = &serial_0;
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		pinctrl-names = "default";
+		pinctrl-0 = <&key_voldown>, <&key_volup>, <&key_power>;
+
+		button-vol-down {
+			label = "KEY_VOLUMEDOWN";
+			linux,code = <KEY_VOLUMEDOWN>;
+			gpios = <&gpa7 3 GPIO_ACTIVE_LOW>;
+			wakeup-source;
+		};
+
+		button-vol-up {
+			label = "KEY_VOLUMEUP";
+			linux,code = <KEY_VOLUMEUP>;
+			gpios = <&gpa8 1 GPIO_ACTIVE_LOW>;
+			wakeup-source;
+		};
+
+		button-power {
+			label = "KEY_POWER";
+			linux,code = <KEY_POWER>;
+			gpios = <&gpa10 1 GPIO_ACTIVE_LOW>;
+			wakeup-source;
+		};
+	};
+};
+
+&ext_24_5m {
+	clock-frequency = <24576000>;
+};
+
+&ext_200m {
+	clock-frequency = <200000000>;
+};
+
+&pinctrl_far_alive {
+	key_voldown: key-voldown-pins {
+		samsung,pins = "gpa7-3";
+		samsung,pin-function = <GS101_PIN_FUNC_EINT>;
+		samsung,pin-pud = <GS101_PIN_PULL_NONE>;
+		samsung,pin-drv = <GS101_PIN_DRV_2_5_MA>;
+	};
+
+	key_volup: key-volup-pins {
+		samsung,pins = "gpa8-1";
+		samsung,pin-function = <GS101_PIN_FUNC_EINT>;
+		samsung,pin-pud = <GS101_PIN_PULL_NONE>;
+		samsung,pin-drv = <GS101_PIN_DRV_2_5_MA>;
+	};
+};
+
+&pinctrl_gpio_alive {
+	key_power: key-power-pins {
+		samsung,pins = "gpa10-1";
+		samsung,pin-function = <GS101_PIN_FUNC_EINT>;
+		samsung,pin-pud = <GS101_PIN_PULL_NONE>;
+		samsung,pin-drv = <GS101_PIN_DRV_2_5_MA>;
+	};
+};
+
+&serial_0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_bus>;
+	status = "okay";
+};
+
+&usi_uart {
+	samsung,clkreq-on; /* needed for UART mode */
+	status = "okay";
+};
+
+&watchdog_cl0 {
+	timeout-sec = <30>;
+	status = "okay";
+};

arch/arm64/boot/dts/exynos/google/gs101-pinctrl.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Pinctrl binding constants for GS101
+ *
+ * Copyright 2020-2023 Google LLC
+ */
+
+#ifndef __DTS_ARM64_SAMSUNG_EXYNOS_GOOGLE_PINCTRL_GS101_H__
+#define __DTS_ARM64_SAMSUNG_EXYNOS_GOOGLE_PINCTRL_GS101_H__
+
+#define GS101_PIN_PULL_NONE		0
+#define GS101_PIN_PULL_DOWN		1
+#define GS101_PIN_PULL_UP		3
+
+/* Pin function in power down mode */
+#define GS101_PIN_PDN_OUT0		0
+#define GS101_PIN_PDN_OUT1		1
+#define GS101_PIN_PDN_INPUT		2
+#define GS101_PIN_PDN_PREV		3
+
+/* GS101 drive strengths */
+#define GS101_PIN_DRV_2_5_MA		0
+#define GS101_PIN_DRV_5_MA		1
+#define GS101_PIN_DRV_7_5_MA		2
+#define GS101_PIN_DRV_10_MA		3
+
+#define GS101_PIN_FUNC_INPUT		0
+#define GS101_PIN_FUNC_OUTPUT		1
+#define GS101_PIN_FUNC_2		2
+#define GS101_PIN_FUNC_3		3
+#define GS101_PIN_FUNC_EINT		0xf
+
+#endif /* __DTS_ARM64_SAMSUNG_EXYNOS_GOOGLE_PINCTRL_GS101_H__ */

arch/arm64/boot/dts/tesla/fsd.dtsi

@@ -342,6 +342,18 @@ fin_pll: clock {
 		#clock-cells = <0>;
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		mfc_left: region@84000000 {
+			compatible = "shared-dma-pool";
+			no-map;
+			reg = <0 0x84000000 0 0x8000000>;
+		};
+	};
+
 	soc: soc@0 {
 		compatible = "simple-bus";
 		#address-cells = <2>;
@@ -956,6 +968,15 @@ timer@10040000 {
 			clock-names = "fin_pll", "mct";
 		};
 
+		mfc: mfc@12880000 {
+			compatible = "tesla,fsd-mfc";
+			reg = <0x0 0x12880000 0x0 0x10000>;
+			interrupts = <GIC_SPI 137 IRQ_TYPE_LEVEL_HIGH>;
+			clock-names = "mfc";
+			clocks = <&clock_mfc MFC_MFC_IPCLKPORT_ACLK>;
+			memory-region = <&mfc_left>;
+		};
+
 		ufs: ufs@15120000 {
 			compatible = "tesla,fsd-ufs";
 			reg = <0x0 0x15120000 0x0 0x200>,  /* 0: HCI standard */