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authorDuncan Laurie <dlaurie@chromium.org>2017-04-13 01:38:43 -0700
committerDuncan Laurie <dlaurie@chromium.org>2017-04-14 04:20:09 +0200
commit30783d84cffcb5a997e8d0f4061e3a7962b6417c (patch)
tree07cc7ffb4ca43ecbd92e31917643123d3bfffb47 /src/mainboard/google/eve/gpio.h
parenta0729d9a561c335b9f7b179602da1c9ed8b34ba5 (diff)
downloadcoreboot-30783d84cffcb5a997e8d0f4061e3a7962b6417c.tar.xz
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@chromium.org> Reviewed-on: https://review.coreboot.org/19263 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/mainboard/google/eve/gpio.h')
-rw-r--r--src/mainboard/google/eve/gpio.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mainboard/google/eve/gpio.h b/src/mainboard/google/eve/gpio.h
index 43f2f623fd..c4c73aecfa 100644
--- a/src/mainboard/google/eve/gpio.h
+++ b/src/mainboard/google/eve/gpio.h
@@ -158,8 +158,8 @@ static const struct pad_config gpio_table[] = {
/* 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),