linux-kernel - [PATCH v2] regulator: s2mpa01: Use correct register for buck1 ramp delay

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Date:	Mon, 26 May 2014 10:26:46 +0200
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Sangbeom Kim <sbkim73@...sung.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Sachin Kamat <sachin.kamat@...aro.org>,
	linux-kernel@...r.kernel.org
Cc:	Axel Lin <axel.lin@...ics.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	stable@...r.kernel.org
Subject: [PATCH v2] regulator: s2mpa01: Use correct register for buck1 ramp
 delay

Fix the register for ramp delay of buck1 regulator. Buck1 and buck6
share the field (offset 4) in ramp delay register S2MPA01_REG_RAMP2.

The driver used the same register and field for ramp delay of buck3 and
buck1. This lead to updating of ramp delay of buck3 when setting buck1
and actually the ramp delay of buck1 was never set.

Cc: <stable@...r.kernel.org>
Fixes: f18792714608 ("regulator: Add support for S2MPA01 regulator")
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
---
Changes since v1:
1. Adjust the patch to match datasheet of S2MPA01.
---
 drivers/regulator/s2mpa01.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/regulator/s2mpa01.c b/drivers/regulator/s2mpa01.c
index f19a30f0fb42..a52cb1cec576 100644
--- a/drivers/regulator/s2mpa01.c
+++ b/drivers/regulator/s2mpa01.c
@@ -116,7 +116,6 @@ static int s2mpa01_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 			ramp_delay = s2mpa01->ramp_delay16;
 
 		ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
-		ramp_reg = S2MPA01_REG_RAMP1;
 		break;
 	case S2MPA01_BUCK2:
 		enable_shift = S2MPA01_BUCK2_RAMP_EN_SHIFT;
-- 
1.9.1

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