[U-Boot] [PATCH 2/6] Davinci: ea20: set GPIOs to hold MII-Phy in reset and set UART0-Switch for console

[Stefano Babic]

From: Bastian Ruppert <Bastian.Ruppert at Sewerin.de>

Signed-off-by: Bastian Ruppert <Bastian.Ruppert at Sewerin.de>
Signed-off-by: Stefano Babic <sbabic at denx.de>
CC: dzu at denx.de
CC: Sandeep Paulraj <s-paulraj at ti.com>
---
 arch/arm/include/asm/arch-davinci/hardware.h |    4 +++
 board/davinci/ea20/ea20.c                    |   30 +++++++++++++++++++++++++-
 2 files changed, 33 insertions(+), 1 deletions(-)

diff --git a/arch/arm/include/asm/arch-davinci/hardware.h b/arch/arm/include/asm/arch-davinci/hardware.h
index 1892f15..ea61913 100644
--- a/arch/arm/include/asm/arch-davinci/hardware.h
+++ b/arch/arm/include/asm/arch-davinci/hardware.h
@@ -156,6 +156,10 @@ typedef volatile unsigned int *	dv_reg_p;
 #define GPIO_BANK2_REG_OPDATA_ADDR		(DAVINCI_GPIO_BASE + 0x3c)
 #define GPIO_BANK2_REG_SET_ADDR			(DAVINCI_GPIO_BASE + 0x40)
 #define GPIO_BANK2_REG_CLR_ADDR			(DAVINCI_GPIO_BASE + 0x44)
+#define GPIO_BANK6_REG_DIR_ADDR			(DAVINCI_GPIO_BASE + 0x88)
+#define GPIO_BANK6_REG_OPDATA_ADDR		(DAVINCI_GPIO_BASE + 0x8c)
+#define GPIO_BANK6_REG_SET_ADDR			(DAVINCI_GPIO_BASE + 0x90)
+#define GPIO_BANK6_REG_CLR_ADDR			(DAVINCI_GPIO_BASE + 0x94)
 #endif /* CONFIG_SOC_DA8XX */
 
 /* Power and Sleep Controller (PSC) Domains */
diff --git a/board/davinci/ea20/ea20.c b/board/davinci/ea20/ea20.c
index 4e4107a..d1b56bf 100644
--- a/board/davinci/ea20/ea20.c
+++ b/board/davinci/ea20/ea20.c
@@ -34,6 +34,7 @@
 #include <asm/arch/emif_defs.h>
 #include <asm/arch/emac_defs.h>
 #include <asm/io.h>
+#include <asm/arch/gpio_defs.h>
 #include <asm/arch/davinci_misc.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -90,6 +91,12 @@ const struct pinmux_config nand_pins[] = {
 };
 #endif
 
+const struct pinmux_config gpio_pins[] = {
+	{ pinmux(13), 8, 0 }, /* GPIO6[15] RESETOUTn on SOM*/
+	{ pinmux(13), 8, 5 }, /* GPIO6[10] U0_SW0 on EA20-00101_2*/
+	{ pinmux(13), 8, 3 }  /* GPIO6[12] U0_SW1 on EA20-00101_2*/
+};
+
 static const struct pinmux_resource pinmuxes[] = {
 #ifdef CONFIG_SPI_FLASH
 	PINMUX_ITEM(spi1_pins),
@@ -110,11 +117,32 @@ static const struct lpsc_resource lpsc[] = {
 
 int board_init(void)
 {
+	struct davinci_gpio *gpio6_base =
+			(struct davinci_gpio *)DAVINCI_GPIO_BANK67;
+
+	/* PinMux for GPIO */
+	if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
+		return 1;
+
+	/* Set the RESETOUTn low */
+	writel((readl(&gpio6_base->set_data) & ~(1 << 15)),
+		&gpio6_base->set_data);
+	writel((readl(&gpio6_base->dir) & ~(1 << 15)), &gpio6_base->dir);
+
+	/* Set U0_SW0 low for UART0 as console*/
+	writel((readl(&gpio6_base->set_data) & ~(1 << 10)),
+		&gpio6_base->set_data);
+	writel((readl(&gpio6_base->dir) & ~(1 << 10)), &gpio6_base->dir);
+
+	/* Set U0_SW1 low for UART0 as console*/
+	writel((readl(&gpio6_base->set_data) & ~(1 << 12)),
+		&gpio6_base->set_data);
+	writel((readl(&gpio6_base->dir) & ~(1 << 12)), &gpio6_base->dir);
+
 #ifndef CONFIG_USE_IRQ
 	irq_init();
 #endif
 
-
 #ifdef CONFIG_NAND_DAVINCI
 	/*
 	 * NAND CS setup - cycle counts based on da850evm NAND timings in the
-- 
1.7.1