diff options
| author | Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com> | 2011-12-16 17:33:59 +0530 |
|---|---|---|
| committer | Philippe Langlais <philippe.langlais@stericsson.com> | 2012-05-22 11:02:39 +0200 |
| commit | 36549314f87e045a29c20a77824d4dd32191df17 (patch) | |
| tree | ac20ae8102cc22de624400a901be8b857e6e6d4f | |
| parent | 5066bf828c3bf51488cd221abff4cb1e74c8b7fb (diff) | |
u5500: lowemi mode for uart3 tx and cts pins
There are overshoots seen on UART3_TX and UART3_RTS during the
verification of UART3 interface on S5500 2.0 build 2.
The normal driving strength of UART3_TX (GPIO_166) and
UART3_RTS (GPIO_167) is 6mA, which might be too strong in this case.
LowEMI mode should be enabled for UART3_TX (GPIO_166) and
UART3_RTS(GPIO_167).
ST-Ericsson Linux next: -
ST-Ericsson ID: 403532
ST-Ericsson FOSS-OUT ID: Trivial
Change-Id: Ifb090f1a91d880c515630c1a232e284accdde9d1
Signed-off-by: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/42907
Reviewed-by: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
| -rw-r--r-- | arch/arm/mach-ux500/board-u5500-pins.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mach-ux500/board-u5500-pins.c b/arch/arm/mach-ux500/board-u5500-pins.c index 516b32c5cc7..4fc00e02f0f 100644 --- a/arch/arm/mach-ux500/board-u5500-pins.c +++ b/arch/arm/mach-ux500/board-u5500-pins.c @@ -45,8 +45,8 @@ static pin_cfg_t u5500_pins_default[] = { /* UART3 */ GPIO165_U3_RXD | PIN_INPUT_PULLUP, - GPIO166_U3_TXD | PIN_OUTPUT_HIGH, - GPIO167_U3_RTSn | PIN_OUTPUT_HIGH, + GPIO166_U3_TXD | PIN_OUTPUT_HIGH | PIN_LOWEMI_ENABLED, + GPIO167_U3_RTSn | PIN_OUTPUT_HIGH | PIN_LOWEMI_ENABLED, GPIO168_U3_CTSn | PIN_INPUT_PULLUP, /* AB5500 */ |