linux-kernel - [PATCH] ARM: EXYNOS: Keep USB related LDOs always active on Origen

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 22 Feb 2013 12:18:27 +0530
From:	Tushar Behera <tushar.behera@...aro.org>
To:	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	kgene.kim@...sung.com, john.stultz@...aro.org, patches@...aro.org
Subject: [PATCH] ARM: EXYNOS: Keep USB related LDOs always active on Origen

LDO3 and LDO8 are used for powering both device and host phy controllers.
These regulators are not handled in USB host driver. Hence we get
unexpected behaviour when the regulators are disabled elsewhere.

It would be best to keep these regulators always on.

Signed-off-by: Tushar Behera <tushar.behera@...aro.org>
---

Based on v3.8.

 arch/arm/mach-exynos/mach-origen.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-exynos/mach-origen.c b/arch/arm/mach-exynos/mach-origen.c
index 5e34b9c..7351063 100644
--- a/arch/arm/mach-exynos/mach-origen.c
+++ b/arch/arm/mach-exynos/mach-origen.c
@@ -169,6 +169,7 @@ static struct regulator_init_data __initdata max8997_ldo3_data = {
 		.min_uV		= 1100000,
 		.max_uV		= 1100000,
 		.apply_uV	= 1,
+		.always_on	= 1,
 		.valid_ops_mask	= REGULATOR_CHANGE_STATUS,
 		.state_mem	= {
 			.disabled	= 1,
@@ -227,6 +228,7 @@ static struct regulator_init_data __initdata max8997_ldo8_data = {
 		.min_uV		= 3300000,
 		.max_uV		= 3300000,
 		.apply_uV	= 1,
+		.always_on	= 1,
 		.valid_ops_mask	= REGULATOR_CHANGE_STATUS,
 		.state_mem	= {
 			.disabled	= 1,
-- 
1.7.4.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/