Merge tag 'v5.17-next-dts32' of git://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux into arm/dt

- add initial support for mt6582 and Prestigio PMT5008 3G tablet
- add basic support for Airoha EN7523

* tag 'v5.17-next-dts32' of git://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux:
  ARM: dts: add GPIO support for Airoha EN7523
  ARM: Add basic support for Airoha EN7523 SoC
  dt-bindings: arm: airoha: Add binding for EN7523 SoC and EVB
  dt-bindings: Add vendor prefix for Airoha
  dt-bindings: mediatek: Adds a DT binding documentation for the MT6582 SoC
  ARM: dts: Add initial support for Prestigio PMT5008 3G tablet
  ARM: dts: Add initial support for Mediatek mt6582

Link: https://lore.kernel.org/r/3974dc7e-4185-4d88-ab5b-031a7d24214d@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

14 files changed, 413 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/arm/airoha.yaml b/Documentation/devicetree/bindings/arm/airoha.yaml
new file mode 100644
index 000000000000..fc19b1a6f37b
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/airoha.yaml
@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/airoha.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Airoha SoC based Platforms Device Tree Bindings
+
+maintainers:
+  - Felix Fietkau <nbd@nbd.name>
+  - John Crispin <john@phrozen.org>
+
+description:
+  Boards with an Airoha SoC shall have the following properties.
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - airoha,en7523-evb
+          - const: airoha,en7523
+
+additionalProperties: true
+
+...
diff --git a/Documentation/devicetree/bindings/arm/mediatek.yaml b/Documentation/devicetree/bindings/arm/mediatek.yaml
index 0ffe1acf1344..ab0593c77321 100644
--- a/Documentation/devicetree/bindings/arm/mediatek.yaml
+++ b/Documentation/devicetree/bindings/arm/mediatek.yaml
@@ -32,6 +32,10 @@ properties:
           - const: mediatek,mt6580
       - items:
           - enum:
+              - prestigio,pmt5008-3g
+          - const: mediatek,mt6582
+      - items:
+          - enum:
               - fairphone,fp1
               - mundoreader,bq-aquaris5
           - const: mediatek,mt6589
diff --git a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
index e5c57d6e0186..fbd76a8e023b 100644
--- a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
+++ b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
@@ -12,6 +12,7 @@ Required properties:
 	For those SoCs that use GPT
 	* "mediatek,mt2701-timer" for MT2701 compatible timers (GPT)
 	* "mediatek,mt6580-timer" for MT6580 compatible timers (GPT)
+	* "mediatek,mt6582-timer" for MT6582 compatible timers (GPT)
 	* "mediatek,mt6589-timer" for MT6589 compatible timers (GPT)
 	* "mediatek,mt7623-timer" for MT7623 compatible timers (GPT)
 	* "mediatek,mt8127-timer" for MT8127 compatible timers (GPT)
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 6d1e7c98cdda..b6addbfea8ff 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -63,6 +63,8 @@ patternProperties:
     description: Aeroflex Gaisler AB
   "^aesop,.*":
     description: AESOP Embedded Forum
+  "^airoha,.*":
+    description: Airoha
   "^al,.*":
     description: Annapurna Labs
   "^alcatel,.*":
diff --git a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
index 0114871f887a..a97418c74f6b 100644
--- a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
@@ -8,6 +8,7 @@ Required properties:
 - compatible should contain:
 	"mediatek,mt2701-wdt", "mediatek,mt6589-wdt": for MT2701
 	"mediatek,mt2712-wdt": for MT2712
+	"mediatek,mt6582-wdt", "mediatek,mt6589-wdt": for MT6582
 	"mediatek,mt6589-wdt": for MT6589
 	"mediatek,mt6797-wdt", "mediatek,mt6589-wdt": for MT6797
 	"mediatek,mt7622-wdt", "mediatek,mt6589-wdt": for MT7622
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4c97cb40eebb..160881d7c5d0 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -573,6 +573,18 @@ config ARCH_VIRT
 	select HAVE_ARM_ARCH_TIMER
 	select ARCH_SUPPORTS_BIG_ENDIAN
 
+config ARCH_AIROHA
+	bool "Airoha SoC Support"
+	depends on ARCH_MULTI_V7
+	select ARM_AMBA
+	select ARM_GIC
+	select ARM_GIC_V3
+	select ARM_PSCI
+	select HAVE_ARM_ARCH_TIMER
+	select COMMON_CLK
+	help
+	  Support for Airoha EN7523 SoCs
+
 #
 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 # Kconfigs may be included either alphabetically (according to the
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 77172d555c7e..34baf885573a 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -160,6 +160,7 @@ textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
 # Machine directory name.  This list is sorted alphanumerically
 # by CONFIG_* macro name.
 machine-$(CONFIG_ARCH_ACTIONS)		+= actions
+machine-$(CONFIG_ARCH_AIROHA)		+= airoha
 machine-$(CONFIG_ARCH_ALPINE)		+= alpine
 machine-$(CONFIG_ARCH_ARTPEC)		+= artpec
 machine-$(CONFIG_ARCH_ASPEED)           += aspeed
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index e453400c2ea3..36c143233eb6 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -187,6 +187,8 @@ dtb-$(CONFIG_ARCH_DAVINCI) += \
 	da850-lego-ev3.dtb
 dtb-$(CONFIG_ARCH_DIGICOLOR) += \
 	cx92755_equinox.dtb
+dtb-$(CONFIG_ARCH_AIROHA) += \
+	en7523-evb.dtb
 dtb-$(CONFIG_ARCH_EXYNOS3) += \
 	exynos3250-artik5-eval.dtb \
 	exynos3250-monk.dtb \
diff --git a/arch/arm/boot/dts/en7523-evb.dts b/arch/arm/boot/dts/en7523-evb.dts
new file mode 100644
index 000000000000..a8d8bb0419a0
--- /dev/null
+++ b/arch/arm/boot/dts/en7523-evb.dts
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/dts-v1/;
+
+/* Bootloader installs ATF here */
+/memreserve/ 0x80000000 0x200000;
+
+#include "en7523.dtsi"
+
+/ {
+	model = "Airoha EN7523 Evaluation Board";
+	compatible = "airoha,en7523-evb", "airoha,en7523";
+
+	aliases {
+		serial0 = &uart1;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200 earlycon";
+		stdout-path = "serial0:115200n8";
+		linux,usable-memory-range = <0x80200000 0x1fe00000>;
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x20000000>;
+	};
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/en7523.dtsi b/arch/arm/boot/dts/en7523.dtsi
new file mode 100644
index 000000000000..36597f587f46
--- /dev/null
+++ b/arch/arm/boot/dts/en7523.dtsi
@@ -0,0 +1,138 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	interrupt-parent = <&gic>;
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		npu_binary@84000000 {
+			no-map;
+			reg = <0x84000000 0xA00000>;
+		};
+
+		npu_flag@84B0000 {
+			no-map;
+			reg = <0x84B00000 0x100000>;
+		};
+
+		npu_pkt@85000000 {
+			no-map;
+			reg = <0x85000000 0x1A00000>;
+		};
+
+		npu_phyaddr@86B00000 {
+			no-map;
+			reg = <0x86B00000 0x100000>;
+		};
+
+		npu_rxdesc@86D00000 {
+			no-map;
+			reg = <0x86D00000 0x100000>;
+		};
+	};
+
+	psci {
+		compatible = "arm,psci-0.2";
+		method = "smc";
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&cpu0>;
+				};
+				core1 {
+					cpu = <&cpu1>;
+				};
+			};
+		};
+
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x0>;
+			enable-method = "psci";
+			clock-frequency = <80000000>;
+			next-level-cache = <&L2_0>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x1>;
+			enable-method = "psci";
+			clock-frequency = <80000000>;
+			next-level-cache = <&L2_0>;
+		};
+
+		L2_0: l2-cache0 {
+			compatible = "cache";
+		};
+	};
+
+	gic: interrupt-controller@9000000 {
+		compatible = "arm,gic-v3";
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		reg = <0x09000000 0x20000>,
+		      <0x09080000 0x80000>,
+		      <0x09400000 0x2000>,
+		      <0x09500000 0x2000>,
+		      <0x09600000 0x20000>;
+		interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	uart1: serial@1fbf0000 {
+		compatible = "ns16550";
+		reg = <0x1fbf0000 0x30>;
+		reg-io-width = <4>;
+		reg-shift = <2>;
+		interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <1843200>;
+		status = "okay";
+	};
+
+	gpio0: gpio@1fbf0200 {
+		compatible = "airoha,en7523-gpio";
+		reg = <0x1fbf0204 0x4>,
+		      <0x1fbf0200 0x4>,
+		      <0x1fbf0220 0x4>,
+		      <0x1fbf0214 0x4>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpio1: gpio@1fbf0270 {
+		compatible = "airoha,en7523-gpio";
+		reg = <0x1fbf0270 0x4>,
+		      <0x1fbf0260 0x4>,
+		      <0x1fbf0264 0x4>,
+		      <0x1fbf0278 0x4>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+};
diff --git a/arch/arm/boot/dts/mt6582-prestigio-pmt5008-3g.dts b/arch/arm/boot/dts/mt6582-prestigio-pmt5008-3g.dts
new file mode 100644
index 000000000000..b057e037f940
--- /dev/null
+++ b/arch/arm/boot/dts/mt6582-prestigio-pmt5008-3g.dts
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2021 Maxim Kutnij <gtk3@inbox.ru>
+ */
+
+/dts-v1/;
+#include "mt6582.dtsi"
+
+/ {
+	model = "Prestigio PMT5008 3G";
+	compatible = "prestigio,pmt5008-3g", "mediatek,mt6582";
+
+	aliases {
+		bootargs = "console=ttyS0,921600n8 earlyprintk";
+		serial0 = &uart0;
+		serial3 = &uart3;
+	};
+
+	chosen {
+		stdout-path = "serial0:921600n8";
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0x80000000 0x40000000>;
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&uart1 {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&uart3 {
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/mt6582.dtsi b/arch/arm/boot/dts/mt6582.dtsi
new file mode 100644
index 000000000000..4263371784cd
--- /dev/null
+++ b/arch/arm/boot/dts/mt6582.dtsi
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2021 Maxim Kutnij <gtk3@inbox.ru>
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	compatible = "mediatek,mt6582";
+	interrupt-parent = <&sysirq>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0x0>;
+		};
+		cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0x1>;
+		};
+		cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0x2>;
+		};
+		cpu@3 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0x3>;
+		};
+	};
+
+	system_clk: dummy13m {
+		compatible = "fixed-clock";
+		clock-frequency = <13000000>;
+		#clock-cells = <0>;
+	};
+
+	rtc_clk: dummy32k {
+		compatible = "fixed-clock";
+		clock-frequency = <32000>;
+		#clock-cells = <0>;
+	};
+
+	uart_clk: dummy26m {
+		compatible = "fixed-clock";
+		clock-frequency = <26000000>;
+		#clock-cells = <0>;
+	};
+
+	timer: timer@11008000 {
+		compatible = "mediatek,mt6577-timer";
+		reg = <0x10008000 0x80>;
+		interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&system_clk>, <&rtc_clk>;
+		clock-names = "system-clk", "rtc-clk";
+	};
+
+	sysirq: interrupt-controller@10200100 {
+		compatible = "mediatek,mt6582-sysirq",
+			     "mediatek,mt6577-sysirq";
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&gic>;
+		reg = <0x10200100 0x1c>;
+	};
+
+	gic: interrupt-controller@10211000 {
+		compatible = "arm,cortex-a7-gic";
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&gic>;
+		reg = <0x10211000 0x1000>,
+		      <0x10212000 0x2000>,
+		      <0x10214000 0x2000>,
+		      <0x10216000 0x2000>;
+	};
+
+	uart0: serial@11002000 {
+		compatible = "mediatek,mt6582-uart",
+			     "mediatek,mt6577-uart";
+		reg = <0x11002000 0x400>;
+		interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&uart_clk>;
+		status = "disabled";
+	};
+
+	uart1: serial@11003000 {
+		compatible = "mediatek,mt6582-uart",
+			     "mediatek,mt6577-uart";
+		reg = <0x11003000 0x400>;
+		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&uart_clk>;
+		status = "disabled";
+	};
+
+	uart2: serial@11004000 {
+		compatible = "mediatek,mt6582-uart",
+			     "mediatek,mt6577-uart";
+		reg = <0x11004000 0x400>;
+		interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&uart_clk>;
+		status = "disabled";
+	};
+
+	uart3: serial@11005000 {
+		compatible = "mediatek,mt6582-uart",
+			     "mediatek,mt6577-uart";
+		reg = <0x11005000 0x400>;
+		interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&uart_clk>;
+		status = "disabled";
+	};
+
+	watchdog: watchdog@10007000 {
+		compatible = "mediatek,mt6582-wdt",
+			     "mediatek,mt6589-wdt";
+		reg = <0x10007000 0x100>;
+	};
+};
diff --git a/arch/arm/mach-airoha/Makefile b/arch/arm/mach-airoha/Makefile
new file mode 100644
index 000000000000..a5857d0d02eb
--- /dev/null
+++ b/arch/arm/mach-airoha/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-y			+= airoha.o
diff --git a/arch/arm/mach-airoha/airoha.c b/arch/arm/mach-airoha/airoha.c
new file mode 100644
index 000000000000..ea23b5abb478
--- /dev/null
+++ b/arch/arm/mach-airoha/airoha.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Device Tree support for Airoha SoCs
+ *
+ * Copyright (c) 2022 Felix Fietkau <nbd@nbd.name>
+ */
+#include <asm/mach/arch.h>
+
+static const char * const airoha_board_dt_compat[] = {
+	"airoha,en7523",
+	NULL,
+};
+
+DT_MACHINE_START(MEDIATEK_DT, "Airoha Cortex-A53 (Device Tree)")
+	.dt_compat	= airoha_board_dt_compat,
+MACHINE_END