Re: [PATCH net-next v2 15/15] arm64: dts: allwinner: a64: add SRAM controller device tree node

Chen-Yu Tsai
2018-05-02T09:53:21Z

On Wed, May 2, 2018 at 5:51 PM, Maxime Ripard <maxime.ripard@bootlin.com> wrote:
> Hi,
>
> On Wed, May 02, 2018 at 12:12:27AM +0800, Chen-Yu Tsai wrote:
>> From: Icenowy Zheng <icenowy@aosc.io>
>>
>> Allwinner A64 has a SRAM controller, and in the device tree currently
>> we have a syscon node to enable EMAC driver to access the EMAC clock
>> register. As SRAM controller driver can now export regmap for this
>> register, replace the syscon node to the SRAM controller device node,
>> and let EMAC driver to acquire its EMAC clock regmap.
>>
>> Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
>> Signed-off-by: Chen-Yu Tsai <wens@csie.org>
>> ---
>> arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 23 +++++++++++++++----
>> 1 file changed, 19 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
>> index 1b2ef28c42bd..1c37659d9d41 100644
>> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
>> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
>> @@ -168,10 +168,25 @@
>> #size-cells = <1>;
>> ranges;
>>
>> - syscon: syscon@1c00000 {
>> - compatible = "allwinner,sun50i-a64-system-controller",
>> - "syscon";
>> + sram_controller: sram-controller@1c00000 {
>> + compatible = "allwinner,sun50i-a64-sram-controller";
>
> I don't think there's anything preventing us from keeping the
> -system-controller compatible. It's what was in the DT before, and
> it's how it's called in the datasheet.

I actually meant to ask you about this. The -system-controller compatible
matches the datasheet better. Maybe we should just switch to that one?

ChenYu

> Otherwise, the whole serie looks good to me:
> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
>
> Maxime
>
> --
> Maxime Ripard, Bootlin (formerly Free Electrons)
> Embedded Linux and Kernel engineering
> https://bootlin.com