From 53698d2537bc8c2b8fedc788b8b927da9a004f9b Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Thu, 22 Mar 2007 13:06:55 +0100 Subject: [PATCH] [ARM] 4278/1: configure pxa27x I2C SCL as "input" It has been reported by Julian Deng that configuring the pxa27x i2c SCL line as output generates a short negative pulse on it during the call to pxa_gpio_mode(GPIO117_I2CSCL_MD); as it first switches it to output and then configures it for the alternate function. The SCL line is in fact bidirectional and can also be configured as 117 | GPIO_ALT_FN_1_IN, in which case the pulse is not generated. This is exactly what this patch does. Author: Julian Deng Signed-off-by: G. Liakhovetski Signed-off-by: Russell King --- include/asm-arm/arch-pxa/pxa-regs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/asm-arm/arch-pxa/pxa-regs.h b/include/asm-arm/arch-pxa/pxa-regs.h index aec835b6f057..139c9d954818 100644 --- a/include/asm-arm/arch-pxa/pxa-regs.h +++ b/include/asm-arm/arch-pxa/pxa-regs.h @@ -1476,7 +1476,7 @@ #define GPIO112_MMCCMD_MD (112 | GPIO_ALT_FN_1_OUT) #define GPIO113_I2S_SYSCLK_MD (113 | GPIO_ALT_FN_1_OUT) #define GPIO113_AC97_RESET_N_MD (113 | GPIO_ALT_FN_2_OUT) -#define GPIO117_I2CSCL_MD (117 | GPIO_ALT_FN_1_OUT) +#define GPIO117_I2CSCL_MD (117 | GPIO_ALT_FN_1_IN) #define GPIO118_I2CSDA_MD (118 | GPIO_ALT_FN_1_IN) /* -- 2.20.1