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

Simon Horman horms at verge.net.au
Tue Mar 27 01:17:16 PDT 2018


On Mon, Mar 26, 2018 at 11:13:54AM +0200, Geert Uytterhoeven wrote:
> Hi Simon,
> 
> On Mon, Mar 26, 2018 at 11:06 AM, Simon Horman <horms at verge.net.au> wrote:
> > 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?
> 
> Sure, after the respun driver series has been accepted.

Perfect, thanks!



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