[PATCH v1] dt-bindings: nand: meson: Fix 'nand-rb' property
Arseniy Krasnov
avkrasnov at sberdevices.ru
Wed Jun 7 07:52:32 PDT 2023
On 07.06.2023 12:36, Miquel Raynal wrote:
> Hi Arseniy,
>
> avkrasnov at sberdevices.ru wrote on Wed, 7 Jun 2023 12:04:29 +0300:
>
>> On 07.06.2023 12:08, Krzysztof Kozlowski wrote:
>>> On 07/06/2023 10:57, Arseniy Krasnov wrote:
>>>>
>>>>
>>>> On 07.06.2023 11:53, Krzysztof Kozlowski wrote:
>>>>> On 07/06/2023 10:40, Arseniy Krasnov wrote:
>>>>>> Hello Miquel,
>>>>>>
>>>>>> On 07.06.2023 10:58, Miquel Raynal wrote:
>>>>>>
>>>>>>> Hi Arseniy,
>>>>>>>
>>>>>>> AVKrasnov at sberdevices.ru wrote on Tue, 6 Jun 2023 22:35:07 +0300:
>>>>>>>
>>>>>>>> Add description of 'nand-rb' property. Use "Fixes" because this property
>>>>>>>> must be supported since the beginning. For this controller 'nand-rb' is
>>>>>>>> stored in the controller node (not in chip), because it has only single
>>>>>>>> r/b wire for all chips.
>>>>>>>
>>>>>>> Sorry if I mislead you in the first place, but you could definitely
>>>>>>> have two chips and only one with RB wired. It needs to be defined in
>>>>>>> the chips.
>>>>>>
>>>>>> Ok, so to clarify: is it ok, that in bindings this property will be placed in the
>>>>>> chip, but in driver, i'm trying to read it from the controller node (thus in
>>>>>> dts file it will be also in controller node)?
>
> The bindings and your driver internal representation are two different
> things. Anyway, as mentioned above, wiring the RB line to one die and
> not the other would be valid hardware design and would require the rb
> property to be in the chip node. Please perform a per-chip property read
> in the driver as well.
Done, I resend both patches (bindings + driver update) as a single patchset. Your review comments
for driver code were also fixed.
>
>>>>>
>>>>> No, because how would your DTS pass validation? I understand you did not
>>>>> test the bindings, but this will improve, right?
>>>>
>>>> Ok, i'll follow DTS layout in the driver, "test the bindings" You mean "make dt_binding_check"?
>>>
>>> Yes. They were sent without testing.
>>>
>>> But please also test your DTS with dtbs_check.
Done
Thanks, Arseniy
>>
>> Got it!
>>
>> Thanks, Arseniy
>>
>>>
>>>
>>> Best regards,
>>> Krzysztof
>>>
>
>
> Thanks,
> Miquèl
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