Re: [PATCH 04/10] dt-bindings: video: add PCLK clock entry to exynos5433-decon

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2015-10-20 21:41 GMT+09:00 Andrzej Hajda <a.hajda@xxxxxxxxxxx>:
> On 10/20/2015 02:24 PM, Krzysztof Kozlowski wrote:
>> W dniu 20.10.2015 o 18:22, Andrzej Hajda pisze:
>>> DECON IP requires this clock to access configuration registers.
>>>
>>> Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
>>> ---
>>>  Documentation/devicetree/bindings/video/exynos5433-decon.txt | 2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/video/exynos5433-decon.txt b/Documentation/devicetree/bindings/video/exynos5433-decon.txt
>>> index 377afbf..3dff78b 100644
>>> --- a/Documentation/devicetree/bindings/video/exynos5433-decon.txt
>>> +++ b/Documentation/devicetree/bindings/video/exynos5433-decon.txt
>>> @@ -16,7 +16,7 @@ Required properties:
>>>  - clocks: must include clock specifiers corresponding to entries in the
>>>        clock-names property.
>>>  - clock-names: list of clock names sorted in the same order as the clocks
>>> -           property. Must contain "aclk_decon", "aclk_smmu_decon0x",
>>> +           property. Must contain "pclk", "aclk_decon", "aclk_smmu_decon0x",
>> I assume that old DTB wouldn't work at all, so there is no point in
>> maintaining ABI compatibility?
>
> Yes, Exynos 5433 has not yet landed in mainline.

No, no. I was asking if something using these compatibles would work
previously or not? The driver provided a compatible, an ABI. Now you
require additional field for the same compatible, so the ABI changes.

Best regards,
Krzysztof
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