linux-kernel - [PATCH] regulator: wm831x-ldo: Fix max_uV for gp

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Date:	Mon, 23 Sep 2013 15:54:20 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	Liam Girdwood <lgirdwood@...il.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] regulator: wm831x-ldo: Fix max_uV for gp_ldo and aldo
 linear range settings

Fix the linear range settings in commit 5ff26a14c3331
"regulator: wm831x-ldo: Convert to use linear ranges".

For wm831x_gp_ldo:
We have below equations for list voltage before converting to linear ranges:

sel <= 0xe:
        volt = 0.9-1.6V in 50mV steps
sel <= 0x1f:
        volt = 1.7-3.3V in 100mV steps

max_uV for the first linear range should be 1600000 rather than 1650000. Fix it.

For wm831x_aldo:
We have below equations for list voltage before converting to linear ranges:

sel <= 0xc:
        volt = 1-1.6V in 50mV steps
sel <= 0x1f
        volt = 1.7-3.5V in 100mV steps

max_uV for the first linear range should be 1600000 rather than 1650000. Fix it.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
 drivers/regulator/wm831x-ldo.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c
index 2be72fe..482ebe8 100644
--- a/drivers/regulator/wm831x-ldo.c
+++ b/drivers/regulator/wm831x-ldo.c
@@ -63,7 +63,7 @@ static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data)
  */
 
 static const struct regulator_linear_range wm831x_gp_ldo_ranges[] = {
-	{ .min_uV =  900000, .max_uV = 1650000, .min_sel =  0, .max_sel = 14,
+	{ .min_uV =  900000, .max_uV = 1600000, .min_sel =  0, .max_sel = 14,
 	  .uV_step =  50000 },
 	{ .min_uV = 1700000, .max_uV = 3300000, .min_sel = 15, .max_sel = 31,
 	  .uV_step = 100000 },
@@ -320,7 +320,7 @@ static struct platform_driver wm831x_gp_ldo_driver = {
  */
 
 static const struct regulator_linear_range wm831x_aldo_ranges[] = {
-	{ .min_uV = 1000000, .max_uV = 1650000, .min_sel =  0, .max_sel = 12,
+	{ .min_uV = 1000000, .max_uV = 1600000, .min_sel =  0, .max_sel = 12,
 	  .uV_step =  50000 },
 	{ .min_uV = 1700000, .max_uV = 3500000, .min_sel = 13, .max_sel = 31,
 	  .uV_step = 100000 },
-- 
1.8.1.2



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