commit 862f5055df98901af5f276b903303bdb115c2f21
author developer <developer@mediatek.com> Thu Nov 07 19:28:44 2019 +0800
committer Tom Rini <trini@konsulko.com> Tue Dec 03 12:00:03 2019 -0500
tree 13aa033d8177ab459154699fe1419554131d72c7
parent c3aeb81998f34293857c5448009c3527ab1a17a0

ARM: MediaTek: add basic support for MT8518 boards

This adds a general board file based on MT8518 SoCs from MediaTek.

Apart from the generic parts (cpu) we add some low level init codes
and initialize the early clocks.

This commit is adding the basic boot support for the MT8518 eMMC board.

[trini: Migrate env location to defconfig, set ENV_IS_IN_MMC]
Signeed-off-by: Tom Rini <trini@konsulko.com>

arch/arm/dts/Makefile

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index d8846df..3dc9c4d 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -835,7 +835,8 @@
 dtb-$(CONFIG_ARCH_MEDIATEK) += \
 	mt7623n-bananapi-bpi-r2.dtb \
 	mt7629-rfb.dtb \
-	mt8516-pumpkin.dtb
+	mt8516-pumpkin.dtb \
+	mt8518-ap1-emmc.dtb
 
 dtb-$(CONFIG_TARGET_GE_BX50V3) += imx6q-bx50v3.dtb
 dtb-$(CONFIG_TARGET_MX53PPD) += imx53-ppd.dtb

arch/arm/dts/mt8518-ap1-emmc.dts

diff --git a/arch/arm/dts/mt8518-ap1-emmc.dts b/arch/arm/dts/mt8518-ap1-emmc.dts
new file mode 100644
index 0000000..f017ee4
--- /dev/null
+++ b/arch/arm/dts/mt8518-ap1-emmc.dts
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2019 MediaTek Inc.
+ * Author: Mingming Lee <mingming.lee@mediatek.com>
+ *
+ */
+
+/dts-v1/;
+
+#include <config.h>
+#include "mt8518.dtsi"
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	model = "MT8518 AP1 EMMC";
+
+	chosen {
+		stdout-path = &uart0;
+		tick-timer = &timer0;
+	};
+
+	memory@40000000 {
+		device_type = "memory";
+		reg = <0x40000000 0x10000000>;
+	};
+
+	reg_1p8v: regulator-1p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	reg_3p3v: regulator-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+};
+
+&mmc0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc0_pins_default>;
+	bus-width = <8>;
+	max-frequency = <200000000>;
+	cap-mmc-highspeed;
+	mmc-hs200-1_8v;
+	cap-mmc-hw-reset;
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_1p8v>;
+	non-removable;
+	status = "okay";
+};
+
+&pinctrl {
+	mmc0_pins_default: mmc0default {
+		mux {
+			function = "msdc";
+			groups =  "msdc0";
+		};
+
+		conf-cmd-data {
+			pins = "MSDC0_CMD", "MSDC0_DAT0", "MSDC0_DAT1",
+			       "MSDC0_DAT2", "MSDC0_DAT3", "MSDC0_DAT4",
+			       "MSDC0_DAT5", "MSDC0_DAT6", "MSDC0_DAT7";
+			input-enable;
+			bias-pull-up;
+		};
+
+		conf-clk {
+			pins = "MSDC0_CLK";
+			bias-pull-down;
+		};
+
+		conf-rst {
+			pins = "MSDC0_RSTB";
+			bias-pull-up;
+		};
+	};
+
+		uart0_pins: uart0 {
+			mux {
+				function = "uart";
+				groups = "uart0_0_rxd_txd";
+			};
+		};
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins>;
+	status = "okay";
+};
+
+&watchdog0 {
+	status = "okay";
+};