From patchwork Sat Sep 4 07:12:26 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [U-Boot,2/2] orion5x: set GPIO output value before enabling From: Albert ARIBAUD X-Patchwork-Id: 71840 Message-Id: <1283584346-20384-2-git-send-email-albert.aribaud@free.fr> To: u-boot@lists.denx.de Date: Sat, 4 Sep 2010 09:12:26 +0200 GPIO output values from config file were ignored. Set them, before enabling to avoid glitches. Signed-off-by: Albert Aribaud --- arch/arm/cpu/arm926ejs/orion5x/cpu.c | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/arm/cpu/arm926ejs/orion5x/cpu.c b/arch/arm/cpu/arm926ejs/orion5x/cpu.c index 260f88b..d2d7ba5 100644 --- a/arch/arm/cpu/arm926ejs/orion5x/cpu.c +++ b/arch/arm/cpu/arm926ejs/orion5x/cpu.c @@ -258,11 +258,14 @@ int arch_misc_init(void) temp = get_cr(); set_cr(temp & ~CR_V); - /* Set CPIOs and MPPs - values provided by board - include file */ + /* Set MPPs as provided by board config file */ writel(ORION5X_MPP0_7, ORION5X_MPP_BASE+0x00); writel(ORION5X_MPP8_15, ORION5X_MPP_BASE+0x04); writel(ORION5X_MPP16_23, ORION5X_MPP_BASE+0x50); + + /* set GPIOs as provided by board config file */ + /* set values first to avoid glitches on outputs */ + writel(ORION5X_GPIO_OUT_VALUE, ORION5X_GPIO_BASE+0x0); writel(ORION5X_GPIO_OUT_ENABLE, ORION5X_GPIO_BASE+0x04); return 0;