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path: root/board/calao/snowball/linux-3.4.patch
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From 3d1a9b44b9dcd2c0f5d54c09596c96c0524d8340 Mon Sep 17 00:00:00 2001
From: Gregory Hermant <gregory.hermant@calao-systems.com>
Date: Tue, 13 Nov 2012 11:47:41 +0100
Subject: [PATCH] trace-debug[stm]: Fix for BT/WLAN instability

Pins under mop500_ske_pins array are used for different
functionalities in snowball. Ex: GPIO161 pin configured
for keypad here must stay configured as GPIO alternate
function for operating PMU_EN pin of BT/WLAN chip in snowball.
So forbid configuring these pins, for snowball

Signed-off-by: Rajanikanth H.V <rajanikanth.hv@stericsson.com>
Signed-off-by: Gregory Hermant <gregory.hermant@calao-systems.com>
---
 arch/arm/mach-ux500/board-mop500-stm.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-ux500/board-mop500-stm.c b/arch/arm/mach-ux500/board-mop500-stm.c
index 1bef2a0..532fb9e 100644
--- a/arch/arm/mach-ux500/board-mop500-stm.c
+++ b/arch/arm/mach-ux500/board-mop500-stm.c
@@ -121,7 +121,9 @@ static int stm_ste_disable_ape_on_mipi60(void)
 	if (retval)
 		STM_ERR("Failed to disable MIPI60\n");
 	else {
-		retval = nmk_config_pins(ARRAY_AND_SIZE(mop500_ske_pins));
+		if (!machine_is_snowball())
+			retval = nmk_config_pins(
+				ARRAY_AND_SIZE(mop500_ske_pins));
 		if (retval)
 			STM_ERR("Failed to enable SKE gpio\n");
 	}
@@ -314,7 +316,8 @@ static int stm_ste_connection(enum stm_connection_type con_type)
 		/* Enable altC3 on GPIO70-74 (STMMOD) and GPIO75-76 (UARTMOD) */
 		prcmu_enable_stm_mod_uart();
 		/* Enable APE on MIPI60 */
-		retval = nmk_config_pins_sleep(ARRAY_AND_SIZE(mop500_ske_pins));
+		if (!machine_is_snowball())
+			retval = nmk_config_pins_sleep(ARRAY_AND_SIZE(mop500_ske_pins));
 		if (retval)
 			STM_ERR("Failed to disable SKE GPIO\n");
 		else {
-- 
1.7.9.5