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authorAaron Durbin <adurbin@chromium.org>2014-08-05 14:05:34 -0500
committerPatrick Georgi <pgeorgi@google.com>2015-03-26 00:26:40 +0100
commit8385cdf10bdded43fc76a96544b567f51f1d197e (patch)
treeacfdeb40ba71f2f5bef0a86a8e9e986d15e5803a
parent2b2b853b25ce3e9b1984c5ba3d820b0af91bef5c (diff)
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@chromium.org> Original-Commit-Id: 1530e7e7f500be47355eada56591ac2dbf1e9326 Original-Change-Id: Ia4ad2377d01296235fc7efbba72fa790016c04af Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/211135 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/8916 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
-rw-r--r--src/mainboard/google/rush_ryu/romstage.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/mainboard/google/rush_ryu/romstage.c b/src/mainboard/google/rush_ryu/romstage.c
index e570c99314..307c1f7008 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),
};