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[1/5] dt-bindings: rtc: Rework compatible strings and add #clock-cells

Message ID 20220418184933.13172-2-paul@crapouillou.net
State Changes Requested, archived
Headers show
Series rtc: ingenic: various updates | expand

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Commit Message

Paul Cercueil April 18, 2022, 6:49 p.m. UTC
The RTC in the JZ4770 is compatible with the JZ4760, but has an extra
register that permits to configure the behaviour of the CLK32K pin. The
same goes for the RTC in the JZ4780.

Therefore, the ingenic,jz4770-rtc and ingenic,jz4780-rtc strings do not
fall back anymore to ingenic,jz4760-rtc. The ingenic,jz4780-rtc string
now falls back to the ingenic,jz4770-rtc string.

Additionally, since the RTCs in the JZ4770 and JZ4780 support outputting
the input oscillator's clock to the CLK32K pin, the RTC node is now also
a clock provider on these SoCs, so a #clock-cells property is added.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
---
 Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

Comments

Krzysztof Kozlowski April 19, 2022, 6:41 a.m. UTC | #1
On 18/04/2022 20:49, Paul Cercueil wrote:
> The RTC in the JZ4770 is compatible with the JZ4760, but has an extra
> register that permits to configure the behaviour of the CLK32K pin. The
> same goes for the RTC in the JZ4780.
> 
> Therefore, the ingenic,jz4770-rtc and ingenic,jz4780-rtc strings do not
> fall back anymore to ingenic,jz4760-rtc. The ingenic,jz4780-rtc string
> now falls back to the ingenic,jz4770-rtc string.
> 
> Additionally, since the RTCs in the JZ4770 and JZ4780 support outputting
> the input oscillator's clock to the CLK32K pin, the RTC node is now also
> a clock provider on these SoCs, so a #clock-cells property is added.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
> ---
>  Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml b/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml
> index b235b2441997..57393c3ac724 100644
> --- a/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml
> +++ b/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml
> @@ -18,14 +18,14 @@ properties:
>        - enum:
>            - ingenic,jz4740-rtc
>            - ingenic,jz4760-rtc
> +          - ingenic,jz4770-rtc
>        - items:
>            - const: ingenic,jz4725b-rtc
>            - const: ingenic,jz4740-rtc
>        - items:
>            - enum:
> -              - ingenic,jz4770-rtc
>                - ingenic,jz4780-rtc
> -          - const: ingenic,jz4760-rtc
> +          - const: ingenic,jz4770-rtc
>  
>    reg:
>      maxItems: 1
> @@ -39,6 +39,9 @@ properties:
>    clock-names:
>      const: rtc
>  
> +  "#clock-cells":
> +    const: 0
> +
>    system-power-controller:
>      description: |
>        Indicates that the RTC is responsible for powering OFF

Inside allOf:if:then:, please add a constraint which compatible cannot
have clock-cells (or maybe better which can?).

Some modification of:
https://elixir.bootlin.com/linux/v5.17-rc2/source/Documentation/devicetree/bindings/media/renesas,vsp1.yaml#L53

Best regards,
Krzysztof
Paul Cercueil April 19, 2022, 4:55 p.m. UTC | #2
Hi Krzysztof,

Le mar., avril 19 2022 at 08:41:56 +0200, Krzysztof Kozlowski 
<krzysztof.kozlowski@linaro.org> a écrit :
> On 18/04/2022 20:49, Paul Cercueil wrote:
>>  The RTC in the JZ4770 is compatible with the JZ4760, but has an 
>> extra
>>  register that permits to configure the behaviour of the CLK32K pin. 
>> The
>>  same goes for the RTC in the JZ4780.
>> 
>>  Therefore, the ingenic,jz4770-rtc and ingenic,jz4780-rtc strings do 
>> not
>>  fall back anymore to ingenic,jz4760-rtc. The ingenic,jz4780-rtc 
>> string
>>  now falls back to the ingenic,jz4770-rtc string.
>> 
>>  Additionally, since the RTCs in the JZ4770 and JZ4780 support 
>> outputting
>>  the input oscillator's clock to the CLK32K pin, the RTC node is now 
>> also
>>  a clock provider on these SoCs, so a #clock-cells property is added.
>> 
>>  Signed-off-by: Paul Cercueil <paul@crapouillou.net>
>>  Cc: Rob Herring <robh+dt@kernel.org>
>>  Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
>>  ---
>>   Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml | 7 +++++--
>>   1 file changed, 5 insertions(+), 2 deletions(-)
>> 
>>  diff --git a/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml 
>> b/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml
>>  index b235b2441997..57393c3ac724 100644
>>  --- a/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml
>>  +++ b/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml
>>  @@ -18,14 +18,14 @@ properties:
>>         - enum:
>>             - ingenic,jz4740-rtc
>>             - ingenic,jz4760-rtc
>>  +          - ingenic,jz4770-rtc
>>         - items:
>>             - const: ingenic,jz4725b-rtc
>>             - const: ingenic,jz4740-rtc
>>         - items:
>>             - enum:
>>  -              - ingenic,jz4770-rtc
>>                 - ingenic,jz4780-rtc
>>  -          - const: ingenic,jz4760-rtc
>>  +          - const: ingenic,jz4770-rtc
>> 
>>     reg:
>>       maxItems: 1
>>  @@ -39,6 +39,9 @@ properties:
>>     clock-names:
>>       const: rtc
>> 
>>  +  "#clock-cells":
>>  +    const: 0
>>  +
>>     system-power-controller:
>>       description: |
>>         Indicates that the RTC is responsible for powering OFF
> 
> Inside allOf:if:then:, please add a constraint which compatible cannot
> have clock-cells (or maybe better which can?).
> 
> Some modification of:
> https://elixir.bootlin.com/linux/v5.17-rc2/source/Documentation/devicetree/bindings/media/renesas,vsp1.yaml#L53

Sure.

Cheers,
-Paul
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml b/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml
index b235b2441997..57393c3ac724 100644
--- a/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml
@@ -18,14 +18,14 @@  properties:
       - enum:
           - ingenic,jz4740-rtc
           - ingenic,jz4760-rtc
+          - ingenic,jz4770-rtc
       - items:
           - const: ingenic,jz4725b-rtc
           - const: ingenic,jz4740-rtc
       - items:
           - enum:
-              - ingenic,jz4770-rtc
               - ingenic,jz4780-rtc
-          - const: ingenic,jz4760-rtc
+          - const: ingenic,jz4770-rtc
 
   reg:
     maxItems: 1
@@ -39,6 +39,9 @@  properties:
   clock-names:
     const: rtc
 
+  "#clock-cells":
+    const: 0
+
   system-power-controller:
     description: |
       Indicates that the RTC is responsible for powering OFF