On 05/19/2016 11:52 PM, Javier Martinez Canillas wrote:
> The regulator always-on property should only be used for regulators
> that either can't be disabled or the drivers for the client devices
> are not enabling the regulator and so being disabled due to unused.
>
> There are some max77802 regulators in the Peach Pit and Pi boards
> that are always-on but shouldn't since they are enabled by drivers:
>
> BUCK5 is max77802 inl1 supply
> BUCK7 is max77802 inl{2,10} supply
> BUCK9 is max77802 inl{3,4,5,7} supply
> BUCK10 is mmc1 vqmmc supply
> LDO9 is adc vdd supply
>
> This patch removes the always-on property for these regulators.
>
> Some regulators should remain always-on even when they are used as
> input supplies, because these regulators are also used by other
> components that are not described in the DT, for example:
>
> LDO10 is hdmi vdd_osc supply but it's also used as input supply for
> the Exynos5420 temperature sensor.
I don't have the schematics, so just guessing: by temperature sensor do
you mean the tmu_cpu* node (supplying power to VDD_TS01/23/4)?
If yes then you can also change it, like on Odroid XU boards.
>
> LDO8 is hdmi vdd and vdd_pll supply but it's also used as supply for
> the Exynos5420 Display port.
>
> BUCK2 and BUCK6 are the vdd supplies for the EAGLE and KFC clusters.
>
> Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
> ---
>
> arch/arm/boot/dts/exynos5420-peach-pit.dts | 5 -----
> arch/arm/boot/dts/exynos5800-peach-pi.dts | 5 -----
> 2 files changed, 10 deletions(-)
Anyway,
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Best regards,
Krzysztof
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