board: samsung: add initial Espresso7420 board support

Espresso7420 is a development/evaluation board for Exynos7420 SoC. It
includes multiple onboard compoments (EMMC/Codec) and various
interconnects (USB/HDMI).
Signed-off-by: NThomas Abraham <thomas.ab@samsung.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

arch/arm/dts/Makefile

@@ -21,6 +21,7 @@ dtb-$(CONFIG_EXYNOS5) += exynos5250-arndale.dtb \
 	exynos5420-peach-pit.dtb \
 	exynos5800-peach-pi.dtb \
 	exynos5422-odroidxu3.dtb
+dtb-$(CONFIG_EXYNOS7420) += exynos7420-espresso7420.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += \
 	rk3288-firefly.dtb \
 	rk3288-jerry.dtb \

arch/arm/dts/exynos7420-espresso7420.dts

+/*
+ * Samsung Espresso7420 board device tree source
+ *
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include "exynos7420.dtsi"
+/ {
+	model = "Samsung Espresso7420 board based on Exynos7420";
+	compatible = "samsung,espresso7420", "samsung,exynos7420";
+
+	aliases {
+		serial2 = "/serial@14C30000";
+		console = "/serial@14C30000";
+		pinctrl0 = "/pinctrl@13470000";
+	};
+};
+
+&fin_pll {
+	clock-frequency = <24000000>;
+};

arch/arm/mach-exynos/Kconfig

@@ -109,6 +109,24 @@ config TARGET_PEACH_PIT
 endchoice
 endif
 
+if ARCH_EXYNOS7
+
+choice
+	prompt "EXYNOS7 board select"
+
+config  TARGET_ESPRESSO7420
+	bool "ESPRESSO7420 board"
+	select ARM64
+	select SUPPORT_SPL
+	select OF_CONTROL
+	select SPL_DISABLE_OF_CONTROL
+	select PINCTRL
+	select PINCTRL_EXYNOS7420
+	select CLK_EXYNOS
+
+endchoice
+endif
+
 config SYS_SOC
 	default "exynos"
 
@@ -121,5 +139,6 @@ source "board/samsung/odroid/Kconfig"
 source "board/samsung/arndale/Kconfig"
 source "board/samsung/smdk5250/Kconfig"
 source "board/samsung/smdk5420/Kconfig"
+source "board/samsung/espresso7420/Kconfig"
 
 endif

board/samsung/common/board.c

@@ -27,6 +27,8 @@
 #include <usb.h>
 #include <dwc3-uboot.h>
 #include <samsung/misc.h>
+#include <dm/pinctrl.h>
+#include <dm.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -97,7 +99,7 @@ int board_init(void)
 int dram_init(void)
 {
 	unsigned int i;
-	u32 addr;
+	unsigned long addr;
 
 	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 		addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
@@ -109,7 +111,7 @@ int dram_init(void)
 void dram_init_banksize(void)
 {
 	unsigned int i;
-	u32 addr, size;
+	unsigned long addr, size;
 
 	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 		addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
@@ -122,6 +124,7 @@ void dram_init_banksize(void)
 
 static int board_uart_init(void)
 {
+#ifndef CONFIG_PINCTRL_EXYNOS
 	int err, uart_id, ret = 0;
 
 	for (uart_id = PERIPH_ID_UART0; uart_id <= PERIPH_ID_UART3; uart_id++) {
@@ -133,6 +136,9 @@ static int board_uart_init(void)
 		}
 	}
 	return ret;
+#else
+	return 0;
+#endif
 }
 
 #ifdef CONFIG_BOARD_EARLY_INIT_F

board/samsung/espresso7420/Kconfig

+if TARGET_ESPRESSO7420
+
+config SYS_BOARD
+	default "espresso7420"
+	help
+	  Espresso7420 is a development/evaluation board for Exynos7420 SoC.
+	  It includes multiple onboard compoments (EMMC/Codec) and various
+	  interconnects (USB/HDMI).
+
+config SYS_VENDOR
+	default "samsung"
+
+config SYS_CONFIG_NAME
+	default "espresso7420"
+
+endif

board/samsung/espresso7420/MAINTAINERS

+ESPRESSO7420 Board
+M:	Thomas Abraham <thomas.ab@samsung.com>
+S:	Maintained
+F:	board/samsung/espresso7420/
+F:	include/configs/espresso7420.h

board/samsung/espresso7420/Makefile

+#
+# Copyright (C) 2016 Samsung Electronics
+# Thomas Abraham <thomas.ab@samsung.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+ifndef CONFIG_SPL_BUILD
+obj-y	+= espresso7420.o
+endif

board/samsung/espresso7420/espresso7420.c

+/*
+ * Espresso7420 board file
+ * Copyright (C) 2016 Samsung Electronics
+ * Thomas Abraham <thomas.ab@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int exynos_init(void)
+{
+	return 0;
+}

configs/espresso7420_defconfig

+CONFIG_ARM=y
+CONFIG_ARCH_EXYNOS=y
+CONFIG_ARCH_EXYNOS7=y
+CONFIG_TARGET_ESPRESSO7420=y
+CONFIG_DEFAULT_DEVICE_TREE="exynos7420-espresso7420"
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_SYS_PROMPT="ESPRESSO7420 # "
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_SETEXPR is not set