[coreboot-gerrit] New patch to review for coreboot: d6e585a ryu: configure EC I2C pads as open drain
Patrick Georgi (pgeorgi@google.com)
gerrit at coreboot.org
Tue Mar 24 12:32:33 CET 2015
Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8916
-gerrit
commit d6e585a105f5868d7f0406a6bdb27161a4ad709a
Author: Aaron Durbin <adurbin at chromium.org>
Date: Tue Aug 5 14:05:34 2014 -0500
ryu: configure EC I2C pads as open drain
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: Ie5eadfe6aca78eb31fbca4e8d8117d1061acbbec
Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
Original-Commit-Id: 1530e7e7f500be47355eada56591ac2dbf1e9326
Original-Change-Id: Ia4ad2377d01296235fc7efbba72fa790016c04af
Original-Signed-off-by: Aaron Durbin <adurbin at chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/211135
Original-Reviewed-by: Furquan Shaikh <furquan at chromium.org>
---
src/mainboard/google/rush_ryu/romstage.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/mainboard/google/rush_ryu/romstage.c b/src/mainboard/google/rush_ryu/romstage.c
index e570c99..307c1f7 100644
--- a/src/mainboard/google/rush_ryu/romstage.c
+++ b/src/mainboard/google/rush_ryu/romstage.c
@@ -31,9 +31,9 @@ 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),
};
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