| commit | 53698d2537bc8c2b8fedc788b8b927da9a004f9b | |
| author | Guennadi Liakhovetski <gl@dsa-ac.de> | |
| Thu, 22 Mar 2007 12:06:55 +0000 (22 13:06 +0100) | ||
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | |
| Sat, 24 Mar 2007 23:24:39 +0000 (24 23:24 +0000) | ||
| tree | 7ff6df680bf00548cde153dfb795a4dee15635d0 | treesnapshot (tar.gz zip) |
| parent | b1dfe1f1457a85b42544ef8b9c83c7cf9d9c3a16 | commitdiff |
[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>
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>
| include/asm-arm/arch-pxa/pxa-regs.h | diffblobblamehistory |