From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Varadarajan, Charulatha" Subject: [PATCH RFC:] FIX: OMAP3EVM: Ethernet controller smsc911x reset Date: Sat, 25 Sep 2010 17:06:33 +0530 Message-ID: <1285414593-28013-1-git-send-email-charu@ti.com> Return-path: Received: from comal.ext.ti.com ([198.47.26.152]:36464 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755335Ab0IYLgq (ORCPT ); Sat, 25 Sep 2010 07:36:46 -0400 Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: linux-omap@vger.kernel.org Cc: khilman@deeprootsystems.com, tony@atomide.com, premi@ti.com, "Varadarajan, Charulatha" Do reset of Ethernet controller smsc911x using OMAP gpio7 while initializing the Ethernet controller. Signed-off-by: Charulatha V --- arch/arm/mach-omap2/board-omap3evm.c | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c index f76d9c0..54a7e20 100644 --- a/arch/arm/mach-omap2/board-omap3evm.c +++ b/arch/arm/mach-omap2/board-omap3evm.c @@ -55,6 +55,7 @@ #define OMAP3EVM_ETHR_SIZE 1024 #define OMAP3EVM_ETHR_ID_REV 0x50 #define OMAP3EVM_ETHR_GPIO_IRQ 176 +#define OMAP3EVM_ETHR_GPIO_RST 7 #define OMAP3EVM_SMSC911X_CS 5 static u8 omap3_evm_version; @@ -134,6 +135,20 @@ static inline void __init omap3evm_init_smsc911x(void) else rate = clk_get_rate(l3ck); + /* Configure ethernet controller reset gpio */ + if (gpio_request(OMAP3EVM_ETHR_GPIO_RST, "SMSC911x gpio") < 0) { + pr_err(KERN_ERR "Failed to request GPIO8 for smsc911x gpio\n"); + return; + } + + gpio_direction_output(OMAP3EVM_ETHR_GPIO_RST, 1); + + /* reset pulse to ethernet controller*/ + gpio_set_value(OMAP3EVM_ETHR_GPIO_RST, 0); + usleep_range(150, 220); + gpio_set_value(OMAP3EVM_ETHR_GPIO_RST, 1); + usleep_range(1, 2); + if (gpio_request(OMAP3EVM_ETHR_GPIO_IRQ, "SMSC911x irq") < 0) { printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n", OMAP3EVM_ETHR_GPIO_IRQ); -- 1.7.0.4