arm64: dts: mediatek: add mt6755 support

This adds basic chip support for MT6755 SoC.

Signed-off-by: Mars Cheng <mars.cheng@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

3 files changed, 184 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
index e0a4bff2fc17..9fbfd3238469 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile
@@ -1,3 +1,4 @@
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt6755-evb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt6795-evb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-evb.dtb
 
diff --git a/arch/arm64/boot/dts/mediatek/mt6755-evb.dts b/arch/arm64/boot/dts/mediatek/mt6755-evb.dts
new file mode 100644
index 000000000000..c568d49235af
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt6755-evb.dts
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2016 MediaTek Inc.
+ * Author: Mars.C <mars.cheng@mediatek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+/dts-v1/;
+#include "mt6755.dtsi"
+
+/ {
+        model = "MediaTek MT6755 EVB";
+        compatible = "mediatek,mt6755-evb", "mediatek,mt6755";
+
+        aliases {
+                serial0 = &uart0;
+        };
+
+        memory@40000000 {
+                device_type = "memory";
+                reg = <0 0x40000000 0 0x1e800000>;
+        };
+
+        chosen {
+                stdout-path = "serial0:921600n8";
+        };
+};
+
+&uart0 {
+        status = "okay";
+};
diff --git a/arch/arm64/boot/dts/mediatek/mt6755.dtsi b/arch/arm64/boot/dts/mediatek/mt6755.dtsi
new file mode 100644
index 000000000000..01ba77669717
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt6755.dtsi
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2016 MediaTek Inc.
+ * Author: Mars.C <mars.cheng@mediatek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+        compatible = "mediatek,mt6755";
+        interrupt-parent = <&sysirq>;
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        psci {
+                compatible = "arm,psci-0.2";
+                method = "smc";
+        };
+
+        cpus {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                cpu0: cpu@0 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a53";
+                        enable-method = "psci";
+                        reg = <0x000>;
+                };
+
+                cpu1: cpu@1 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a53";
+                        enable-method = "psci";
+                        reg = <0x001>;
+                };
+
+                cpu2: cpu@2 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a53";
+                        enable-method = "psci";
+                        reg = <0x002>;
+                };
+
+                cpu3: cpu@3 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a53";
+                        enable-method = "psci";
+                        reg = <0x003>;
+                };
+
+                cpu4: cpu@100 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a53";
+                        enable-method = "psci";
+                        reg = <0x100>;
+                };
+
+                cpu5: cpu@101 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a53";
+                        enable-method = "psci";
+                        reg = <0x101>;
+                };
+
+                cpu6: cpu@102 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a53";
+                        enable-method = "psci";
+                        reg = <0x102>;
+                };
+
+                cpu7: cpu@103 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a53";
+                        enable-method = "psci";
+                        reg = <0x103>;
+                };
+        };
+
+        uart_clk: dummy26m {
+                compatible = "fixed-clock";
+                clock-frequency = <26000000>;
+                #clock-cells = <0>;
+        };
+
+        timer {
+                compatible = "arm,armv8-timer";
+                interrupt-parent = <&gic>;
+                interrupts = <GIC_PPI 13
+                             (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
+                             <GIC_PPI 14
+                             (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
+                             <GIC_PPI 11
+                             (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
+                             <GIC_PPI 10
+                             (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
+        };
+
+        sysirq: intpol-controller@10200620 {
+                compatible = "mediatek,mt6755-sysirq",
+                             "mediatek,mt6577-sysirq";
+                interrupt-controller;
+                #interrupt-cells = <3>;
+                interrupt-parent = <&gic>;
+                reg = <0 0x10200620 0 0x20>;
+        };
+
+        gic: interrupt-controller@10231000 {
+                compatible = "arm,gic-400";
+                #interrupt-cells = <3>;
+                interrupt-parent = <&gic>;
+                interrupt-controller;
+                reg = <0 0x10231000 0 0x1000>,
+                      <0 0x10232000 0 0x2000>,
+                      <0 0x10234000 0 0x2000>,
+                      <0 0x10236000 0 0x2000>;
+        };
+
+        uart0: serial@11002000 {
+                compatible = "mediatek,mt6755-uart",
+                             "mediatek,mt6577-uart";
+                reg = <0 0x11002000 0 0x400>;
+                interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_LOW>;
+                clocks = <&uart_clk>;
+                status = "disabled";
+        };
+
+        uart1: serial@11003000 {
+                compatible = "mediatek,mt6755-uart",
+                             "mediatek,mt6577-uart";
+                reg = <0 0x11003000 0 0x400>;
+                interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_LOW>;
+                clocks = <&uart_clk>;
+                status = "disabled";
+        };
+};