Re: [PATCH v1] dt-bindings: nand: meson: Fix 'nand-rb' property

From: Arseniy Krasnov
Date: Wed Jun 07 2023 - 11:00:57 EST




On 07.06.2023 17:58, Krzysztof Kozlowski wrote:
> On 07/06/2023 16:52, Arseniy Krasnov wrote:
>>
>>
>> On 07.06.2023 12:36, Miquel Raynal wrote:
>>> Hi Arseniy,
>>>
>>> avkrasnov@xxxxxxxxxxxxxx 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@xxxxxxxxxxxxxx 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, please send new version, not the same. New version means with fixed
> comments and with patch changelog.

Sorry, Yes, I mean new version, here it is:
https://lore.kernel.org/linux-mtd/20230607145026.2899547-1-AVKrasnov@xxxxxxxxxxxxxx/

There I fixed bindings and tested it.

Thanks, Arseniy

>
> Best regards,
> Krzysztof
>