[coreboot-gerrit] Change in coreboot[master]: mainboard/google/eve: Enable internal pull-down on USB_C{0, 1...

[Duncan Laurie (Code Review)]

Duncan Laurie has uploaded a new change for review. ( https://review.coreboot.org/19263 )

Change subject: mainboard/google/eve: Enable internal pull-down on USB_C{0,1}_DP_HPD
......................................................................

mainboard/google/eve: Enable internal pull-down on USB_C{0,1}_DP_HPD

These lines act as inputs to both EC and AP and when the corresponding
TCPC mux is in low power mode the line is floating.  Add an internal
pull-down to each GPIO to prevent it from floating in this state.

BUG=b:35775012
BRANCH=none
TEST=Verify that the kernel does not see a device present on DP when
the TCPC mux is in low power mode.

Change-Id: Ie229f84871e9994467c0ab660cc7e271a51d9cbb
Signed-off-by: Duncan Laurie <dlaurie at chromium.org>
---
M src/mainboard/google/eve/gpio.h
1 file changed, 2 insertions(+), 2 deletions(-)


  git pull ssh://review.coreboot.org:29418/coreboot refs/changes/63/19263/1

diff --git a/src/mainboard/google/eve/gpio.h b/src/mainboard/google/eve/gpio.h
index 43f2f62..c4c73ae 100644
--- a/src/mainboard/google/eve/gpio.h
+++ b/src/mainboard/google/eve/gpio.h
@@ -158,8 +158,8 @@
 /* USB2_OC1# */		PAD_CFG_NF(GPP_E10, NONE, DEEP, NF1), /* USB_C1_OC_ODL */
 /* USB2_OC2# */		PAD_CFG_GPO(GPP_E11, 1, DEEP), /* TOUCHSCREEN_STOP_L */
 /* USB2_OC3# */		PAD_CFG_NC(GPP_E12),
-/* DDPB_HPD0 */		PAD_CFG_NF(GPP_E13, NONE, DEEP, NF1), /* USB_C0_DP_HPD */
-/* DDPC_HPD1 */		PAD_CFG_NF(GPP_E14, NONE, DEEP, NF1), /* USB_C1_DP_HPD */
+/* DDPB_HPD0 */		PAD_CFG_NF(GPP_E13, 20K_PD, DEEP, NF1), /* USB_C0_DP_HPD */
+/* DDPC_HPD1 */		PAD_CFG_NF(GPP_E14, 20K_PD, DEEP, NF1), /* USB_C1_DP_HPD */
 /* DDPD_HPD2 */		PAD_CFG_NC(GPP_E15), /* TP48 */
 /* DDPE_HPD3 */		PAD_CFG_NC(GPP_E16), /* TP244 */
 /* EDP_HPD */		PAD_CFG_NF(GPP_E17, NONE, DEEP, NF1),

-- 
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Gerrit-MessageType: newchange
Gerrit-Change-Id: Ie229f84871e9994467c0ab660cc7e271a51d9cbb
Gerrit-PatchSet: 1
Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-Owner: Duncan Laurie <dlaurie at chromium.org>