Davinci: ea20: set GPIOs to hold MII-Phy in reset and set UART0-Switch for console

Signed-off-by: Bastian Ruppert <Bastian.Ruppert@Sewerin.de>
Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: dzu@denx.de
CC: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

diff --git a/arch/arm/include/asm/arch-davinci/hardware.h b/arch/arm/include/asm/arch-davinci/hardware.h
index 946c793..8c2808c 100644 (file)
--- a/arch/arm/include/asm/arch-davinci/hardware.h
+++ b/arch/arm/include/asm/arch-davinci/hardware.h
@@ -176,6 +176,10 @@ 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..3b636ff 100644 (file)
--- a/board/davinci/ea20/ea20.c
+++ b/board/davinci/ea20/ea20.c
@@ -35,6 +35,7 @@
 #include <asm/arch/emac_defs.h>
 #include <asm/io.h>
 #include <asm/arch/davinci_misc.h>
+#include <asm/arch/gpio.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