linux-kernel - Re: [PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with 'power-source' property

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Message-ID: <c49c9633-4bc6-0cdd-cb3d-8b9ffc92b671@xilinx.com>
Date:   Mon, 16 Aug 2021 11:08:06 +0200
From:   Michal Simek <michal.simek@...inx.com>
To:     Rob Herring <robh@...nel.org>,
        Michal Simek <michal.simek@...inx.com>
CC:     Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@...inx.com>,
        "Linus Walleij" <linus.walleij@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        git <git@...inx.com>, <saikrishna12468@...il.com>
Subject: Re: [PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with
 'power-source' property

Hi Rob,

On 8/5/21 9:52 AM, Michal Simek wrote:
> 
> 
> On 8/2/21 7:29 PM, Rob Herring wrote:
>> On Thu, Jul 29, 2021 at 10:59 PM Michal Simek <michal.simek@...inx.com> wrote:
>>>
>>>
>>>
>>> On 7/29/21 9:59 PM, Rob Herring wrote:
>>>> On Wed, Jul 21, 2021 at 05:22:33PM +0530, Sai Krishna Potthuri wrote:
>>>>> Replace 'io-standard' property with 'power-source' property in all zynq dts
>>>>> files to be in sync with Zynq pinctrl driver.
>>>>>
>>>>> Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@...inx.com>
>>>>> ---
>>>>>  arch/arm/boot/dts/zynq-ebaz4205.dts |  8 ++++----
>>>>>  arch/arm/boot/dts/zynq-microzed.dts |  2 +-
>>>>>  arch/arm/boot/dts/zynq-zc702.dts    | 20 ++++++++++----------
>>>>>  arch/arm/boot/dts/zynq-zc706.dts    | 18 +++++++++---------
>>>>>  4 files changed, 24 insertions(+), 24 deletions(-)
>>>>>
>>>>> diff --git a/arch/arm/boot/dts/zynq-ebaz4205.dts b/arch/arm/boot/dts/zynq-ebaz4205.dts
>>>>> index b0b836aedd76..be7eae611fb7 100644
>>>>> --- a/arch/arm/boot/dts/zynq-ebaz4205.dts
>>>>> +++ b/arch/arm/boot/dts/zynq-ebaz4205.dts
>>>>> @@ -57,7 +57,7 @@
>>>>>
>>>>>              conf {
>>>>>                      groups = "gpio0_20_grp", "gpio0_32_grp";
>>>>> -                    io-standard = <3>;
>>>>> +                    power-source = <3>;
>>>>
>>>> This will break using a new DT with a kernel without patch 3.
>>>>
>>>
>>> What do you suggest? Not to update any old DT?
>>
>> Your options are don't change the dts files, patch 3 needs to go to
>> stable kernels, or you document the breakage (if you don't care).
> 
> There is no intention to go to stable kernel and I don't think this is
> stable material. Linus has applied 3 patches and this one should go via
> my tree. It means I will make sure that this DT change will be in the
> tree when pinctrl changes are applied.

Any issue with this patch? Or can I apply it to my tree?

Thanks,
Michal