From 3f1791536159953729cc928b1f03a3236905428c Mon Sep 17 00:00:00 2001 From: Shawn Nematbakhsh Date: Wed, 24 Jul 2013 11:01:08 -0700 Subject: [PATCH] peppy: Drive WLAN_DISABLE_L / BT_ON low in S3 and S5. When the board is in S3 and S5 the WLAN_DISABLE_L signal can leak power into the WLAN power well since the GPIO controlling WLAN_DISABLE_L is in the suspend well. Therefore, drive WLAN_DISABLE_L low to avoid the power leak. This is a clone of a Falco change: I1a0df80dd47fdbd535aca7a9d49253794c480606. Change-Id: I625dfbb228d1f293b880a52dfe552842d55a17d1 Signed-off-by: Shawn Nematbakhsh Reviewed-on: https://gerrit.chromium.org/gerrit/63220 Reviewed-by: Dave Parker Reviewed-by: Marc Jones Reviewed-on: http://review.coreboot.org/4383 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/mainboard/google/peppy/smihandler.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/mainboard/google/peppy/smihandler.c b/src/mainboard/google/peppy/smihandler.c index 16e8f64d4e..07cfee320d 100644 --- a/src/mainboard/google/peppy/smihandler.c +++ b/src/mainboard/google/peppy/smihandler.c @@ -34,6 +34,8 @@ /* Codec enable: GPIO45 */ #define GPIO_PP3300_CODEC_EN 45 +/* WLAN / BT enable: GPIO46 */ +#define GPIO_WLAN_DISABLE_L 46 int mainboard_io_trap_handler(int smif) { @@ -103,6 +105,7 @@ void mainboard_smi_sleep(u8 slp_typ) 1, USB_CHARGE_MODE_DISABLED); set_gpio(GPIO_PP3300_CODEC_EN, 0); + set_gpio(GPIO_WLAN_DISABLE_L, 0); break; case 5: if (smm_get_gnvs()->s5u0 == 0) @@ -113,6 +116,7 @@ void mainboard_smi_sleep(u8 slp_typ) 1, USB_CHARGE_MODE_DISABLED); set_gpio(GPIO_PP3300_CODEC_EN, 0); + set_gpio(GPIO_WLAN_DISABLE_L, 0); break; }