diff options
| author | Guennadi Liakhovetski <gl@dsa-ac.de> | 2007-03-22 08:06:55 -0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-03-24 19:24:39 -0400 |
| commit | 53698d2537bc8c2b8fedc788b8b927da9a004f9b (patch) | |
| tree | 7ff6df680bf00548cde153dfb795a4dee15635d0 | |
| parent | b1dfe1f1457a85b42544ef8b9c83c7cf9d9c3a16 (diff) | |
[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 <dengtj@sitek.cn>
Signed-off-by: G. Liakhovetski <gl@dsa-ac.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | include/asm-arm/arch-pxa/pxa-regs.h | 2 |
1 files changed, 1 insertions, 1 deletions
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 @@ | |||
| 1476 | #define GPIO112_MMCCMD_MD (112 | GPIO_ALT_FN_1_OUT) | 1476 | #define GPIO112_MMCCMD_MD (112 | GPIO_ALT_FN_1_OUT) |
| 1477 | #define GPIO113_I2S_SYSCLK_MD (113 | GPIO_ALT_FN_1_OUT) | 1477 | #define GPIO113_I2S_SYSCLK_MD (113 | GPIO_ALT_FN_1_OUT) |
| 1478 | #define GPIO113_AC97_RESET_N_MD (113 | GPIO_ALT_FN_2_OUT) | 1478 | #define GPIO113_AC97_RESET_N_MD (113 | GPIO_ALT_FN_2_OUT) |
| 1479 | #define GPIO117_I2CSCL_MD (117 | GPIO_ALT_FN_1_OUT) | 1479 | #define GPIO117_I2CSCL_MD (117 | GPIO_ALT_FN_1_IN) |
| 1480 | #define GPIO118_I2CSDA_MD (118 | GPIO_ALT_FN_1_IN) | 1480 | #define GPIO118_I2CSDA_MD (118 | GPIO_ALT_FN_1_IN) |
| 1481 | 1481 | ||
| 1482 | /* | 1482 | /* |