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| author | Lukasz Majewski <l.majewski@samsung.com> | 2013-10-31 16:52:55 +0100 |
|---|---|---|
| committer | Chanho Park <chanho61.park@samsung.com> | 2014-11-18 11:45:02 +0900 |
| commit | 7a009523165c53d74043b0e996937969808e1c50 (patch) | |
| tree | c1dc7e70b408020e15e34c02b54441c6930f72dd /arch | |
| parent | cf4914accb7fcbb712d3ecddcf52a746d8334f08 (diff) | |
| download | linux-3.10-7a009523165c53d74043b0e996937969808e1c50.tar.gz linux-3.10-7a009523165c53d74043b0e996937969808e1c50.tar.bz2 linux-3.10-7a009523165c53d74043b0e996937969808e1c50.zip | |
regulator:max77686: Correct GPIOs for BUCK2 DVS setting
Before this patch SELB and DVS pins were wrongly defined in the DTS.
As a result MAX77686 always used BUCK2_DVS1 register (the DVS pins were
set all to 0). However the default DVS index (default_dvs_idx) was set to 1.
Therefore, the default value of BUCK2_DVS1 register (1.1V) was always
setup. Wrongly the driver was changing BUCK2_DVS2 register. Due to that
voltage was NOT changed at all.
The problem appeared when BOOST was ported to v3.10-mobile. It requires
around 1.3V, but default voltage is set to 1.1V (0x28). Too small voltage
resulted in OOPs at random places.
As a side note:
The MAX77686 is NOT using DVS with GPIO. It changes the value of current
voltage with I2C utilization.
Tested at: REDWOOD - Exynos4412 - rev1.
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boot/dts/exynos4412-slp_pq.dts | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/exynos4412-slp_pq.dts b/arch/arm/boot/dts/exynos4412-slp_pq.dts index 5c3beddd780..e05f3fa0c34 100644 --- a/arch/arm/boot/dts/exynos4412-slp_pq.dts +++ b/arch/arm/boot/dts/exynos4412-slp_pq.dts @@ -561,11 +561,11 @@ reg = <0x09>; #clock-cells = <1>; - max77686,dvs_gpios = <&gpf3 1 0>, + max77686,selb_gpios = <&gpf3 1 0>, <&gpf3 2 0>, <&gpf3 3 0>; - max77686,selb_gpios = <&gpm3 0 0>, + max77686,dvs_gpios = <&gpm3 0 0>, <&gpm3 1 0>, <&gpm3 2 0>; |