Re: [PATCH v3 6/7] dt-bindings: gpio: add binding for the GPIO block for Apple Mac SMC

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On 09/11/2022 10:12, Russell King (Oracle) wrote:
> On Wed, Nov 09, 2022 at 09:36:12AM +0100, Krzysztof Kozlowski wrote:
>> On 08/11/2022 23:09, Russell King (Oracle) wrote:
>>> On Tue, Nov 08, 2022 at 09:56:40PM +0100, Krzysztof Kozlowski wrote:
>>>> On 08/11/2022 17:33, Russell King (Oracle) wrote:
>>>>> Add the DT binding for the Apple Mac System Management Controller GPIOs.
>>>>>
>>>>> Signed-off-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
>>>>> ---
>>>>>  .../bindings/gpio/apple,smc-gpio.yaml         | 37 +++++++++++++++++++
>>>>>  1 file changed, 37 insertions(+)
>>>>>  create mode 100644 Documentation/devicetree/bindings/gpio/apple,smc-gpio.yaml
>>>>>
>>>>> diff --git a/Documentation/devicetree/bindings/gpio/apple,smc-gpio.yaml b/Documentation/devicetree/bindings/gpio/apple,smc-gpio.yaml
>>>>> new file mode 100644
>>>>> index 000000000000..1a415b78760b
>>>>> --- /dev/null
>>>>> +++ b/Documentation/devicetree/bindings/gpio/apple,smc-gpio.yaml
>>>>> @@ -0,0 +1,37 @@
>>>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>>>> +%YAML 1.2
>>>>> +---
>>>>> +$id: http://devicetree.org/schemas/gpio/gpio-macsmc.yaml#
>>>>
>>>> Does not look like you tested the bindings. Please run `make
>>>> dt_binding_check` (see
>>>> Documentation/devicetree/bindings/writing-schema.rst for instructions).
>>>
>>> Oh ffs. DT bindings are utterly impossible to get correct.
>>
>> Why? You write, you test and then you see the error. Srsly...
> 
> It's utterly impossible for me to remember the dependencies. It's
> utterly impossible for me to remember the make incantation to test
> this bloody things - especially as I need to limit it otherwise it
> takes a very long time to test.

Then this is where I can help - you can test just one, specific binding
or few of them:

make dt_binding_check DT_SCHEMA_FILES=apple,smc-gpio.yaml

make dt_binding_check DT_SCHEMA_FILES=apple,smc

So before you format patches, just do `git rebase -i HEAD~7`, change to
re-word or edit and  go one-by-one testing your bisectability. The same
we are always doing for regular kernel builds when having a big
patchset, right? Each commit must compile, not just the last one in
patchset.

Or push each of the commit to a service which can do it for you. For
example, for kernel building (not yet ready for DT binding check) I am
using something like:
https://github.com/krzk/tools/tree/master/git-build-kernel

> 
> The whole bloody thing is just too sodding difficult.
> 
> I'm not going to bother with this patch set any more. Too frustrated
> with this piecemeal approach and the crappy slow tooling and the
> idiotic incomprehensible error messages it spits out.

Best regards,
Krzysztof




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