[PATCH v2 2/3] arm64: dts: renesas: salvator-common: Configure PMIC for DDR Backup Power

Simon Horman horms at verge.net.au
Mon Mar 26 02:06:25 PDT 2018


On Fri, Mar 16, 2018 at 03:08:13PM +0300, Sergei Shtylyov wrote:
> On 03/16/2018 03:00 PM, Geert Uytterhoeven wrote:
> 
> >>> On Salvator-X(S), all of the DDR0, DDR1, DDR0C, and DDR1C power rails
> >>> need to be kept powered when backup mode is enabled.  Reflect this in
> >>> the "rohm,ddr-backup-power" property for the BD9571MWV PMIC node.
> >>>
> >>> The accessory power switch (SW23) is a toggle switch, hense specify
> >>> "rohm,rstbmode-level".
> >>>
> >>> Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
> >>> ---
> >>> v2:
> >>>   - Add rohm,rstbmode-level.
> >>> ---
> >>>  arch/arm64/boot/dts/renesas/salvator-common.dtsi | 2 ++
> >>>  1 file changed, 2 insertions(+)
> >>>
> >>> diff --git a/arch/arm64/boot/dts/renesas/salvator-common.dtsi b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
> >>> index 2a7f36abd2dd85c6..80794c38c2669d75 100644
> >>> --- a/arch/arm64/boot/dts/renesas/salvator-common.dtsi
> >>> +++ b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
> >>> @@ -376,6 +376,8 @@
> >>>               #interrupt-cells = <2>;
> >>>               gpio-controller;
> >>>               #gpio-cells = <2>;
> >>> +             rohm,ddr-backup-power = <15>;
> >>
> >>   Why not 0xf if those are all bit flags?
> > 
> > Because it's a small number?
> > Does it matter?
> 
>    I think hex is preferable for the bit flags. Decimal makes one think it's something
> else -- some magnitude, etc...

Geert, it seems that Rob Herring is of the same opinion.
Would you care to respin this series?



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