samsung: Enable device tree for s5p_goni

Change this board to add a device tree.

This also adds a pinmux header file although it is not used as yet.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

arch/arm/Kconfig

@@ -336,6 +336,9 @@ config TARGET_BCM958622HR
 config ARCH_EXYNOS
 	bool "Samsung EXYNOS"
 
+config ARCH_S5PC1XX
+	bool "Samsung S5PC1XX"
+
 config ARCH_HIGHBANK
 	bool "Calxeda Highbank"
 
@@ -429,9 +432,6 @@ config RMOBILE
 config TARGET_CM_FX6
 	bool "Support cm_fx6"
 
-config TARGET_S5P_GONI
-	bool "Support s5p_goni"
-
 config TARGET_SMDKC100
 	bool "Support smdkc100"
 
@@ -550,6 +550,8 @@ source "arch/arm/cpu/arm926ejs/orion5x/Kconfig"
 
 source "arch/arm/cpu/armv7/rmobile/Kconfig"
 
+source "arch/arm/cpu/armv7/s5pc1xx/Kconfig"
+
 source "arch/arm/cpu/armv7/tegra-common/Kconfig"
 
 source "arch/arm/cpu/armv7/uniphier/Kconfig"
@@ -657,7 +659,6 @@ source "board/raspberrypi/rpi_b/Kconfig"
 source "board/ronetix/pm9261/Kconfig"
 source "board/ronetix/pm9263/Kconfig"
 source "board/ronetix/pm9g45/Kconfig"
-source "board/samsung/goni/Kconfig"
 source "board/samsung/smdk2410/Kconfig"
 source "board/samsung/smdkc100/Kconfig"
 source "board/sandisk/sansa_fuze_plus/Kconfig"

arch/arm/cpu/armv7/s5pc1xx/Kconfig

@@ -0,0 +1,20 @@
+if ARCH_S5PC1XX
+
+choice
+	prompt "S5PC1XX board select"
+
+config TARGET_S5P_GONI
+	bool "S5P Goni board"
+	select OF_CONTROL if !SPL_BUILD
+
+endchoice
+
+config SYS_CPU
+	default "armv7"
+
+config SYS_SOC
+	default "s5pc1xx"
+
+source "board/samsung/goni/Kconfig"
+
+endif

arch/arm/dts/Makefile

@@ -1,3 +1,4 @@
+dtb-$(CONFIG_S5PC110) += s5pc1xx-goni.dtb
 dtb-$(CONFIG_EXYNOS4) += exynos4210-origen.dtb \
 	exynos4210-smdkv310.dtb \
 	exynos4210-universal_c210.dtb \

arch/arm/dts/s5pc1xx-goni.dts

@@ -0,0 +1,28 @@
+/*
+ * Samsung's S5PC110-based Goni board device tree source
+ *
+ * Copyright (c) 2014 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/dts-v1/;
+
+#include "skeleton.dtsi"
+
+/ {
+	model = "Samsung Goni based on S5PC110";
+	compatible = "samsung,goni", "samsung,s5pc110";
+
+	aliases {
+		serial2 = "/serial@e2900800";
+		console = "/serial@e2900800";
+	};
+
+	serial@e2900800 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0xe2900800 0x400>;
+		id = <2>;
+	};
+
+};

arch/arm/include/asm/arch-s5pc1xx/periph.h

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * Rajeshwari Shinde <rajeshwari.s@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __ASM_ARM_ARCH_PERIPH_H
+#define __ASM_ARM_ARCH_PERIPH_H
+
+/*
+ * Peripherals required for pinmux configuration. List will
+ * grow with support for more devices getting added.
+ * Numbering based on interrupt table.
+ *
+ */
+enum periph_id {
+	PERIPH_ID_UART0 = 51,
+	PERIPH_ID_UART1,
+	PERIPH_ID_UART2,
+	PERIPH_ID_UART3,
+	PERIPH_ID_I2C0 = 56,
+	PERIPH_ID_I2C1,
+	PERIPH_ID_I2C2,
+	PERIPH_ID_I2C3,
+	PERIPH_ID_I2C4,
+	PERIPH_ID_I2C5,
+	PERIPH_ID_I2C6,
+	PERIPH_ID_I2C7,
+	PERIPH_ID_SPI0 = 68,
+	PERIPH_ID_SPI1,
+	PERIPH_ID_SPI2,
+	PERIPH_ID_SDMMC0 = 75,
+	PERIPH_ID_SDMMC1,
+	PERIPH_ID_SDMMC2,
+	PERIPH_ID_SDMMC3,
+	PERIPH_ID_I2C8 = 87,
+	PERIPH_ID_I2C9,
+	PERIPH_ID_I2S0 = 98,
+	PERIPH_ID_I2S1 = 99,
+
+	/* Since following peripherals do
+	 * not have shared peripheral interrupts (SPIs)
+	 * they are numbered arbitiraly after the maximum
+	 * SPIs Exynos has (128)
+	 */
+	PERIPH_ID_SROMC = 128,
+	PERIPH_ID_SPI3,
+	PERIPH_ID_SPI4,
+	PERIPH_ID_SDMMC4,
+	PERIPH_ID_PWM0,
+	PERIPH_ID_PWM1,
+	PERIPH_ID_PWM2,
+	PERIPH_ID_PWM3,
+	PERIPH_ID_PWM4,
+	PERIPH_ID_I2C10 = 203,
+
+	PERIPH_ID_NONE = -1,
+};
+
+#endif /* __ASM_ARM_ARCH_PERIPH_H */

arch/arm/include/asm/arch-s5pc1xx/pinmux.h

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * Abhilash Kesavan <a.kesavan@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __ASM_ARM_ARCH_PINMUX_H
+#define __ASM_ARM_ARCH_PINMUX_H
+
+#include "periph.h"
+
+/*
+ * Flags for setting specific configarations of peripherals.
+ * List will grow with support for more devices getting added.
+ */
+enum {
+	PINMUX_FLAG_NONE	= 0x00000000,
+
+	/* Flags for eMMC */
+	PINMUX_FLAG_8BIT_MODE	= 1 << 0,       /* SDMMC 8-bit mode */
+
+	/* Flags for SROM controller */
+	PINMUX_FLAG_BANK	= 3 << 0,       /* bank number (0-3) */
+	PINMUX_FLAG_16BIT	= 1 << 2,       /* 16-bit width */
+};
+
+/**
+ * Configures the pinmux for a particular peripheral.
+ *
+ * Each gpio can be configured in many different ways (4 bits on exynos)
+ * such as "input", "output", "special function", "external interrupt"
+ * etc. This function will configure the peripheral pinmux along with
+ * pull-up/down and drive strength.
+ *
+ * @param peripheral	peripheral to be configured
+ * @param flags		configure flags
+ * @return 0 if ok, -1 on error (e.g. unsupported peripheral)
+ */
+int exynos_pinmux_config(int peripheral, int flags);
+
+/**
+ * Decode the peripheral id using the interrpt numbers.
+ *
+ * @param blob  Device tree blob
+ * @param node  FDT I2C node to find
+ * @return peripheral id if ok, PERIPH_ID_NONE on error
+ */
+int pinmux_decode_periph_id(const void *blob, int node);
+#endif

configs/s5p_goni_defconfig

@@ -1,2 +1,4 @@
 CONFIG_ARM=y
+CONFIG_ARCH_S5PC1XX=y
 CONFIG_TARGET_S5P_GONI=y
+CONFIG_DEFAULT_DEVICE_TREE="s5pc1xx-goni"

drivers/mmc/s5p_sdhci.c

@@ -14,9 +14,7 @@
 #include <asm/arch/mmc.h>
 #include <asm/arch/clk.h>
 #include <errno.h>
-#ifdef CONFIG_OF_CONTROL
 #include <asm/arch/pinmux.h>
-#endif
 
 static char *S5P_NAME = "SAMSUNG SDHCI";
 static void s5p_sdhci_set_control_reg(struct sdhci_host *host)

include/configs/s5p_goni.h

@@ -53,6 +53,7 @@
 #define CONFIG_MMC
 #define CONFIG_SDHCI
 #define CONFIG_S5P_SDHCI
+#define SDHCI_MAX_HOSTS		4
 
 /* PWM */
 #define CONFIG_PWM			1
@@ -106,7 +107,6 @@
 				",12m(modem)"\
 				",60m(qboot)\0"
 
-#define CONFIG_BOOTDELAY		1
 #define CONFIG_ZERO_BOOTDELAY_CHECK
 
 /* partitions definitions */
@@ -283,4 +283,6 @@
 #define CONFIG_CMD_USB_MASS_STORAGE
 #define CONFIG_USB_GADGET_MASS_STORAGE
 
+#define CONFIG_OF_LIBFDT
+
 #endif	/* __CONFIG_H */