linux-kernel - [PATCH V1] regulator: tps65910: Configure correct value for VDDCTRL vout reg

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Message-Id: <1331118545-26514-1-git-send-email-ldewangan@nvidia.com>
Date:	Wed,  7 Mar 2012 16:39:05 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	lrg@...com, broonie@...nsource.wolfsonmicro.com
Cc:	linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
	ldewangan@...dia.com
Subject: [PATCH V1] regulator: tps65910: Configure correct value for VDDCTRL vout reg

As per datasheet, the voltage output is defined as
from SEL[6:0] = 3 to 64 (dec)
Vout= (SEL[6:0] × 12.5 mV + 562.5 mV)

The list_voltage returns the vout as
    600mV +  selector * 12.5mV

and so equivalent VSEL is selector + 3.
Adding 3 on selector when configuring VSEL register for
VDDCTRL output.

Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
---
 drivers/regulator/tps65910-regulator.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/regulator/tps65910-regulator.c b/drivers/regulator/tps65910-regulator.c
index 15b5f1e..8de2835 100644
--- a/drivers/regulator/tps65910-regulator.c
+++ b/drivers/regulator/tps65910-regulator.c
@@ -715,7 +715,7 @@ static int tps65910_set_voltage_dcdc(struct regulator_dev *dev,
 		tps65910_reg_write(pmic, TPS65910_VDD2_OP, vsel);
 		break;
 	case TPS65911_REG_VDDCTRL:
-		vsel = selector;
+		vsel = selector + 3;
 		tps65910_reg_write(pmic, TPS65911_VDDCTRL_OP, vsel);
 	}
 
-- 
1.7.1.1

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