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authorNancy Chen <Nancy.Chen@freescale.com>2010-12-08 17:00:41 -0600
committerNancy Chen <Nancy.Chen@freescale.com>2010-12-08 17:30:53 -0600
commit0d4a96748552c0d0300e0b898c0d6cee50a4a771 (patch)
treeb9bdf50b95bc4b094863999fea43ae3beed558b6
parent7bbe269ff96c5fa39360355f06495ab6e1d79775 (diff)
ENGR00136146-2 MX53 TO2 ARD: Changed R2 value for reulator SW2 and LDO2
LTC3589: Changed R2 value for reulator SW2 and LDO2. Signed-off-by: Nancy Chen <Nancy.Chen@freescale.com>
-rw-r--r--drivers/regulator/ltc3589-regulator.c34
1 files changed, 24 insertions, 10 deletions
diff --git a/drivers/regulator/ltc3589-regulator.c b/drivers/regulator/ltc3589-regulator.c
index 8a5dba936ea..b81552e9431 100644
--- a/drivers/regulator/ltc3589-regulator.c
+++ b/drivers/regulator/ltc3589-regulator.c
@@ -35,6 +35,7 @@
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/mfd/ltc3589/core.h>
+#include <mach/hardware.h>
/* Register definitions */
#define LTC3589_REG_IRSTAT 0x02
@@ -102,11 +103,13 @@
#define LTC3589_LDO_4 7
/* Resistorss */
#define LTC3589_LDO2_R1 180
-#define LTC3589_LDO2_R2 232
+#define LTC3589_LDO2_R2_TO1 232
+#define LTC3589_LDO2_R2_TO2 191
#define LTC3589_SW1_R1 100
#define LTC3589_SW1_R2 180
#define LTC3589_SW2_R1 180
-#define LTC3589_SW2_R2 232
+#define LTC3589_SW2_R2_TO1 232
+#define LTC3589_SW2_R2_TO2 191
#define LTC3589_SW3_R1 270
#define LTC3589_SW3_R2 100
@@ -138,6 +141,9 @@ struct ltc_pmic {
struct mutex io_lock;
};
+static int ltc3589_ldo2_r2;
+static int ltc3589_sw2_r2;
+
/*
* LTC3589 Device IO
*/
@@ -454,7 +460,7 @@ static int ltc3589_dcdc_get_voltage(struct regulator_dev *dev)
break;
case LTC3589_DCDC_2:
r1 = LTC3589_SW2_R1;
- r2 = LTC3589_SW2_R2;
+ r2 = ltc3589_sw2_r2;
shift = LTC3589_B2DTV2_REG2_REF_INPUT_V2_SHIFT;
mask = LTC3589_B2DTV2_REG2_REF_INPUT_V2_MASK;
if (data & LTC3589_VCCR_REG2_REF_SELECT)
@@ -514,7 +520,7 @@ static int ltc3589_dcdc_set_voltage(struct regulator_dev *dev,
break;
case LTC3589_DCDC_2:
r1 = LTC3589_SW2_R1;
- r2 = LTC3589_SW2_R2;
+ r2 = ltc3589_sw2_r2;
volt_reg1 = 0;
volt_reg2 = LTC3589_REG_B2DTV1;
slew_val = 1;
@@ -619,7 +625,7 @@ static int ltc3589_set_suspend_voltage(struct regulator_dev *dev,
break;
case LTC3589_DCDC_2:
r1 = LTC3589_SW2_R1;
- r2 = LTC3589_SW2_R2;
+ r2 = ltc3589_sw2_r2;
volt_reg1 = LTC3589_REG_B2DTV2;
shift = LTC3589_B2DTV2_REG2_REF_INPUT_V2_SHIFT;
mask = LTC3589_B2DTV2_REG2_REF_INPUT_V2_MASK;
@@ -705,8 +711,8 @@ static int ltc3589_ldo_get_voltage(struct regulator_dev *dev)
data >>= LTC3589_L2DTV2_LDO2_REF_INPUT_V2_SHIFT;
data &= LTC3589_L2DTV2_LDO2_REF_INPUT_V2_MASK;
- uV = (((LTC3589_LDO2_R1 + LTC3589_LDO2_R2)
- * (362500 + data * 12500)) / LTC3589_LDO2_R2);
+ uV = (((LTC3589_LDO2_R1 + ltc3589_ldo2_r2)
+ * (362500 + data * 12500)) / ltc3589_ldo2_r2);
return uV;
}
@@ -771,9 +777,9 @@ static int ltc3589_ldo_set_voltage(struct regulator_dev *dev,
} else {
int dac_vol;
- dac_vol = ((min_uV * LTC3589_LDO2_R2 -
- 362500 * (LTC3589_LDO2_R1 + LTC3589_LDO2_R2))
- / (12500 * (LTC3589_LDO2_R1 + LTC3589_LDO2_R2)));
+ dac_vol = ((min_uV * ltc3589_ldo2_r2 -
+ 362500 * (LTC3589_LDO2_R1 + ltc3589_ldo2_r2))
+ / (12500 * (LTC3589_LDO2_R1 + ltc3589_ldo2_r2)));
if ((dac_vol > 0x1F) || (dac_vol < 0))
return -EINVAL;
@@ -954,6 +960,14 @@ static int ltc3589_regulator_probe(struct platform_device *pdev)
if (pdev->id < LTC3589_DCDC_1 || pdev->id > LTC3589_LDO4)
return -ENODEV;
+ if (cpu_is_mx53_rev(CHIP_REV_2_0) >= 1) {
+ ltc3589_ldo2_r2 = LTC3589_LDO2_R2_TO2;
+ ltc3589_sw2_r2 = LTC3589_SW2_R2_TO2;
+ } else {
+ ltc3589_ldo2_r2 = LTC3589_LDO2_R2_TO1;
+ ltc3589_sw2_r2 = LTC3589_SW2_R2_TO1;
+ }
+
/* register regulator */
rdev = regulator_register(&ltc3589_reg[pdev->id], &pdev->dev,
pdev->dev.platform_data,