From c06825873dbc977028c393cb9cbe320634cb5785 Mon Sep 17 00:00:00 2001 From: Sriramakrishnan Date: Mon, 18 Jul 2011 09:21:55 -0400 Subject: [PATCH] omap3evm: Update ethernet reset sequence for Rev.G board The GPIO pin used for resetting the external LAN chip has changed for Rev.G board. The patch uses generic gpio API instead of direct access to corresponding registers. Signed-off-by: Sriramakrishnan Signed-off-by: Sanjeev Premi Signed-off-by: Sandeep Paulraj --- board/ti/evm/evm.c | 35 ++++++++++++++++++++++++++--------- 1 file changed, 26 insertions(+), 9 deletions(-) diff --git a/board/ti/evm/evm.c b/board/ti/evm/evm.c index 8f9f141682..2c95fae68c 100644 --- a/board/ti/evm/evm.c +++ b/board/ti/evm/evm.c @@ -33,10 +33,14 @@ #include #include #include +#include #include #include #include "evm.h" +#define OMAP3EVM_GPIO_ETH_RST_GEN1 64 +#define OMAP3EVM_GPIO_ETH_RST_GEN2 7 + DECLARE_GLOBAL_DATA_PTR; static u32 omap3_evm_version; @@ -181,17 +185,30 @@ static void setup_net_chip(void) */ static void reset_net_chip(void) { - struct gpio *gpio3_base = (struct gpio *)OMAP34XX_GPIO3_BASE; - - /* Make GPIO 64 as output pin */ - writel(readl(&gpio3_base->oe) & ~(GPIO0), &gpio3_base->oe); - - /* Now send a pulse on the GPIO pin */ - writel(GPIO0, &gpio3_base->setdataout); + int ret; + int rst_gpio; + + if (get_omap3_evm_rev() == OMAP3EVM_BOARD_GEN_1) { + rst_gpio = OMAP3EVM_GPIO_ETH_RST_GEN1; + } else { + rst_gpio = OMAP3EVM_GPIO_ETH_RST_GEN2; + } + + ret = omap_request_gpio(rst_gpio); + if (ret < 0) { + printf("Unable to get GPIO %d\n", rst_gpio); + return ; + } + + /* Configure as output */ + omap_set_gpio_direction(rst_gpio, 0); + + /* Send a pulse on the GPIO pin */ + omap_set_gpio_dataout(rst_gpio, 1); udelay(1); - writel(GPIO0, &gpio3_base->cleardataout); + omap_set_gpio_dataout(rst_gpio, 0); udelay(1); - writel(GPIO0, &gpio3_base->setdataout); + omap_set_gpio_dataout(rst_gpio, 1); } int board_eth_init(bd_t *bis) -- 2.30.2