[U-Boot] [PATCH v2 13/16] samsung: Enable device tree for s5p_goni

Simon Glass sjg at chromium.org
Mon Sep 15 00:12:31 CEST 2014


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 at chromium.org>
---

Changes in v2:
- Avoid using a common file, and just add a device tree
- Fix device tree base addresses

 arch/arm/dts/Makefile                      |  1 +
 arch/arm/dts/s5pc1xx-goni.dts              | 28 ++++++++++++++
 arch/arm/include/asm/arch-s5pc1xx/periph.h | 61 ++++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-s5pc1xx/pinmux.h | 50 ++++++++++++++++++++++++
 drivers/mmc/s5p_sdhci.c                    |  2 -
 include/configs/s5p_goni.h                 |  7 +++-
 6 files changed, 146 insertions(+), 3 deletions(-)
 create mode 100644 arch/arm/dts/s5pc1xx-goni.dts
 create mode 100644 arch/arm/include/asm/arch-s5pc1xx/periph.h
 create mode 100644 arch/arm/include/asm/arch-s5pc1xx/pinmux.h

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index f72207d..8a8ee56 100644
--- a/arch/arm/dts/Makefile
+++ b/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 \
diff --git a/arch/arm/dts/s5pc1xx-goni.dts b/arch/arm/dts/s5pc1xx-goni.dts
new file mode 100644
index 0000000..64d6bd3
--- /dev/null
+++ b/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 {
+		serial0 = "/serial at e2900000";
+		console = "/serial at e2900000";
+	};
+
+	serial at e2900000 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0xe2900000 0x100>;
+		interrupts = <0 51 0>;
+		id = <0>;
+	};
+};
diff --git a/arch/arm/include/asm/arch-s5pc1xx/periph.h b/arch/arm/include/asm/arch-s5pc1xx/periph.h
new file mode 100644
index 0000000..5c1c3d4
--- /dev/null
+++ b/arch/arm/include/asm/arch-s5pc1xx/periph.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * Rajeshwari Shinde <rajeshwari.s at 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 */
diff --git a/arch/arm/include/asm/arch-s5pc1xx/pinmux.h b/arch/arm/include/asm/arch-s5pc1xx/pinmux.h
new file mode 100644
index 0000000..0b91ef6
--- /dev/null
+++ b/arch/arm/include/asm/arch-s5pc1xx/pinmux.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * Abhilash Kesavan <a.kesavan at 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
diff --git a/drivers/mmc/s5p_sdhci.c b/drivers/mmc/s5p_sdhci.c
index 2ff0ec2..637dd97 100644
--- a/drivers/mmc/s5p_sdhci.c
+++ b/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)
diff --git a/include/configs/s5p_goni.h b/include/configs/s5p_goni.h
index a51215d..b22ac18 100644
--- a/include/configs/s5p_goni.h
+++ b/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 +283,9 @@
 #define CONFIG_CMD_USB_MASS_STORAGE
 #define CONFIG_USB_GADGET_MASS_STORAGE
 
+#define CONFIG_DEFAULT_DEVICE_TREE	s5pc1xx-goni
+#define CONFIG_OF_CONTROL
+#define CONFIG_OF_SEPARATE
+#define CONFIG_OF_LIBFDT
+
 #endif	/* __CONFIG_H */
-- 
2.1.0.rc2.206.gedb03e5



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