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.

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

9 files changed, 257 insertions, 1 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index d8846df1bd..3dc9c4d41c 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -835,7 +835,8 @@ dtb-$(CONFIG_SOC_K3_J721E) += k3-j721e-common-proc-board.dtb \
 dtb-$(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
diff --git a/arch/arm/dts/mt8518-ap1-emmc.dts b/arch/arm/dts/mt8518-ap1-emmc.dts
new file mode 100644
index 0000000000..f017ee4431
--- /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";
+};
diff --git a/arch/arm/mach-mediatek/Kconfig b/arch/arm/mach-mediatek/Kconfig
index 8e343c3182..ad453a60c1 100644
--- a/arch/arm/mach-mediatek/Kconfig
+++ b/arch/arm/mach-mediatek/Kconfig
@@ -51,6 +51,7 @@ endchoice
 
 source "board/mediatek/mt7623/Kconfig"
 source "board/mediatek/mt7629/Kconfig"
+source "board/mediatek/mt8518/Kconfig"
 source "board/mediatek/pumpkin/Kconfig"
 
 endif
diff --git a/board/mediatek/mt8518/Kconfig b/board/mediatek/mt8518/Kconfig
new file mode 100644
index 0000000000..1971c4d8c3
--- /dev/null
+++ b/board/mediatek/mt8518/Kconfig
@@ -0,0 +1,14 @@
+if TARGET_MT8518
+
+config SYS_BOARD
+	default "mt8518"
+
+config SYS_CONFIG_NAME
+	default "mt8518"
+
+
+config MTK_BROM_HEADER_INFO
+	string
+	default "media=nor"
+
+endif
diff --git a/board/mediatek/mt8518/MAINTAINERS b/board/mediatek/mt8518/MAINTAINERS
new file mode 100644
index 0000000000..c9151947ad
--- /dev/null
+++ b/board/mediatek/mt8518/MAINTAINERS
@@ -0,0 +1,6 @@
+MT8518
+M:	Mingming lee <mingming.lee@mediatek.com>
+S:	Maintained
+F:	board/mediatek/mt8518
+F:	include/configs/mt8518.h
+F:	configs/mt8518_ap1_emmc_defconfig
diff --git a/board/mediatek/mt8518/Makefile b/board/mediatek/mt8518/Makefile
new file mode 100644
index 0000000000..0884b32c56
--- /dev/null
+++ b/board/mediatek/mt8518/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier:	GPL-2.0
+
+obj-y += mt8518_ap1.o
diff --git a/board/mediatek/mt8518/mt8518_ap1.c b/board/mediatek/mt8518/mt8518_ap1.c
new file mode 100644
index 0000000000..9710907fe2
--- /dev/null
+++ b/board/mediatek/mt8518/mt8518_ap1.c
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 MediaTek Inc.
+ */
+
+#include <common.h>
+#include <dm.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+	debug("gd->fdt_blob is %p\n", gd->fdt_blob);
+	return 0;
+}
diff --git a/configs/mt8518_ap1_emmc_defconfig b/configs/mt8518_ap1_emmc_defconfig
new file mode 100644
index 0000000000..c2865a2d6c
--- /dev/null
+++ b/configs/mt8518_ap1_emmc_defconfig
@@ -0,0 +1,44 @@
+CONFIG_ARM=y
+CONFIG_POSITION_INDEPENDENT=y
+CONFIG_ARCH_MEDIATEK=y
+CONFIG_SYS_TEXT_BASE=0x40008000
+CONFIG_SYS_MALLOC_F_LEN=0x4000
+CONFIG_TARGET_MT8518=y
+CONFIG_SYS_PROMPT="MT8518> "
+CONFIG_ENV_SIZE=0x1000
+CONFIG_ENV_OFFSET=0x4E60000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_FIT=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_OF_LIBFDT=y
+# CONFIG_FDT_DEBUG is not set
+CONFIG_LZMA=y
+CONFIG_LZ4=y
+CONFIG_LZO=y
+CONFIG_GZIP=y
+CONFIG_BZIP2=y
+CONFIG_CMD_BOOTMENU=y
+CONFIG_MENU_SHOW=y
+CONFIG_DEFAULT_FDT_FILE="mt8518-ap1-emmc.dtb"
+CONFIG_DEFAULT_DEVICE_TREE="mt8518-ap1-emmc"
+CONFIG_ENV_IS_IN_MMC=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_MT8518=y
+CONFIG_RAM=y
+CONFIG_BAUDRATE=921600
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_DM=y
+# CONFIG_DM_DEBUG is not set
+CONFIG_DM_SERIAL=y
+CONFIG_MTK_SERIAL=y
+CONFIG_WDT=y
+CONFIG_WDT_MTK=y
+CONFIG_CLK=y
+CONFIG_TIMER=y
+CONFIG_MTK_TIMER=y
+CONFIG_CMD_MMC=y
+CONFIG_DM_MMC=y
+CONFIG_MMC_MTK=y
+CONFIG_MMC_HS200_SUPPORT=y
+# CONFIG_ENV_IS_IN_MMC is not set
diff --git a/include/configs/mt8518.h b/include/configs/mt8518.h
new file mode 100644
index 0000000000..a7fe83a605
--- /dev/null
+++ b/include/configs/mt8518.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Configuration for MediaTek MT8518 SoC
+ *
+ * Copyright (C) 2019 MediaTek Inc.
+ * Author: Mingming Lee <mingming.lee@mediatek.com>
+ */
+
+#ifndef __MT8518_H
+#define __MT8518_H
+
+#include <linux/sizes.h>
+
+/* Machine ID */
+#define CONFIG_SYS_NONCACHED_MEMORY		SZ_1M
+
+#define CONFIG_CPU_ARMV8
+
+#define COUNTER_FREQUENCY			13000000
+
+/* DRAM definition */
+#define CONFIG_SYS_SDRAM_BASE			0x40000000
+#define CONFIG_SYS_SDRAM_SIZE			0x20000000
+
+#define CONFIG_SYS_LOAD_ADDR			0x41000000
+#define CONFIG_LOADADDR				CONFIG_SYS_LOAD_ADDR
+
+#define CONFIG_SYS_MALLOC_LEN			SZ_32M
+#define CONFIG_SYS_BOOTM_LEN			SZ_64M
+
+/* Uboot definition */
+#define CONFIG_SYS_UBOOT_START			CONFIG_SYS_TEXT_BASE
+#define CONFIG_SYS_INIT_SP_ADDR			(CONFIG_SYS_TEXT_BASE + \
+						SZ_2M - \
+						GENERATED_GBL_DATA_SIZE)
+
+/* ENV Setting */
+#if defined(CONFIG_MMC_MTK)
+#define CONFIG_SYS_MMC_ENV_DEV			0
+#define CONFIG_ENV_OVERWRITE
+
+/* MMC offset in block unit,and block size is 0x200 */
+#define ENV_BOOT_READ_IMAGE \
+	"boot_rd_img=mmc dev 0" \
+	";mmc read ${loadaddr} 0x27400 0x4000" \
+	";iminfo ${loadaddr}\0"
+#endif
+
+/* Console configuration */
+#define ENV_DEVICE_SETTINGS \
+	"stdin=serial\0" \
+	"stdout=serial\0" \
+	"stderr=serial\0"
+
+#define ENV_BOOT_CMD \
+	"mtk_boot=run boot_rd_img;bootm;\0"
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"fdt_high=0x6c000000\0" \
+	ENV_DEVICE_SETTINGS \
+	ENV_BOOT_READ_IMAGE \
+	ENV_BOOT_CMD \
+	"bootcmd=run mtk_boot;\0" \
+
+#endif