erebion/coreboot
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

ryu: configure EC I2C pads as open drain

Browse source 
The I2C pads connected to the EC are pulled to 3.3V. Therefore
the pads need to be configured as open drain.

BUG=chrome-os-partner:29981
BRANCH=None
TEST=Built and booted through depthcharge on ryu

Change-Id: Ia4ad2377d01296235fc7efbba72fa790016c04af
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/211135
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
This commit is contained in:
Aaron Durbin 2014-08-05 14:05:34 -05:00 • committed by chrome-internal-fetch
commit 1530e7e7f5
1 changed files with 3 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/mainboard/google/rush_ryu/romstage.c
View file

@ -32,9 +32,9 @@ static const struct pad_config padcfgs[] = {
/* TPM on I2C3 */
PAD_CFG_SFIO(CAM_I2C_SCL, PINMUX_INPUT_ENABLE, I2C3),
PAD_CFG_SFIO(CAM_I2C_SDA, PINMUX_INPUT_ENABLE, I2C3),
/* EC on I2C2 */
PAD_CFG_SFIO(GEN2_I2C_SCL, PINMUX_INPUT_ENABLE, I2C2),
PAD_CFG_SFIO(GEN2_I2C_SDA, PINMUX_INPUT_ENABLE, I2C2),
/* EC on I2C2 - pulled to 3.3V */
PAD_CFG_SFIO(GEN2_I2C_SCL, PINMUX_OPEN_DRAIN|PINMUX_INPUT_ENABLE, I2C2),
PAD_CFG_SFIO(GEN2_I2C_SDA, PINMUX_OPEN_DRAIN|PINMUX_INPUT_ENABLE, I2C2),
/* WP_L */
PAD_CFG_GPIO_INPUT(KB_ROW1, PINMUX_PULL_NONE),
};