Re: [PATCH v7 11/13] ARM: dts: exynos: add syscon to clock compatible

From: Lukasz Luba
Date: Wed May 08 2019 - 09:14:08 EST



On 5/8/19 12:17 PM, Krzysztof Kozlowski wrote:
> On Wed, 8 May 2019 at 11:50, Lukasz Luba <l.luba@xxxxxxxxxxxxxxxxxxx> wrote:
>>
>>
>> On 5/8/19 9:22 AM, Krzysztof Kozlowski wrote:
>>> On Mon, 6 May 2019 at 17:12, Lukasz Luba <l.luba@xxxxxxxxxxxxxxxxxxx> wrote:
>>>>
>>>> In order get the clock by phandle and use it with regmap it needs to be
>>>> compatible with syscon. The DMC driver uses two registers from clock
>>>> register set and needs the regmap of them.
>>>>
>>>> Signed-off-by: Lukasz Luba <l.luba@xxxxxxxxxxxxxxxxxxx>
>>>> ---
>>>> arch/arm/boot/dts/exynos5800.dtsi | 2 +-
>>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/arch/arm/boot/dts/exynos5800.dtsi b/arch/arm/boot/dts/exynos5800.dtsi
>>>> index 57d3b31..0a2b328 100644
>>>> --- a/arch/arm/boot/dts/exynos5800.dtsi
>>>> +++ b/arch/arm/boot/dts/exynos5800.dtsi
>>>> @@ -17,7 +17,7 @@
>>>> };
>>>>
>>>> &clock {
>>>> - compatible = "samsung,exynos5800-clock";
>>>> + compatible = "samsung,exynos5800-clock", "syscon";
>>>
>>> What about Exynos5420 DTSI?
>> OK, I will also add it to 5420 dtsi.
>> --------------------------8<------------------------------------------
>> diff --git a/arch/arm/boot/dts/exynos5420.dtsi
>> b/arch/arm/boot/dts/exynos5420.dtsi
>> index aaff158..d9203f0 100644
>> --- a/arch/arm/boot/dts/exynos5420.dtsi
>> +++ b/arch/arm/boot/dts/exynos5420.dtsi
>> @@ -173,7 +173,7 @@
>> };
>>
>> clock: clock-controller@10010000 {
>> - compatible = "samsung,exynos5420-clock";
>> + compatible = "samsung,exynos5420-clock", "syscon";
>> reg = <0x10010000 0x30000>;
>> #clock-cells = <1>;
>> };
>> diff --git a/arch/arm/boot/dts/exynos5800.dtsi
>> b/arch/arm/boot/dts/exynos5800.dtsi
>> index 57d3b31..0a2b328 100644
>> --- a/arch/arm/boot/dts/exynos5800.dtsi
>> +++ b/arch/arm/boot/dts/exynos5800.dtsi
>> @@ -17,7 +17,7 @@
>> };
>>
>> &clock {
>> - compatible = "samsung,exynos5800-clock";
>> + compatible = "samsung,exynos5800-clock", "syscon";
>> };
>> ----------------------------->8-----------------------------------
>>
>> Can I add your ack after that?
>
> No need for ack. The DTS have to go through arm-soc so I will pick it
> up when dependencies get in and bindings are accepted (acked or
> applied). We have now merge window so I guess this will go to v5.4-rc1
> at earliest.
>
> If you want to speed up things in future, be sure that dependencies
> (headers) are applied as early as possible.
Thank you Krzysztof for the explanation, good to know that.

Regards,
Lukasz
>
> Best regards,
> Krzysztof
>
>