linux-kernel - Re: [PATCH v1 2/6] dt-bindings: memory: tegra30: emc: Replace core regulator with power domain

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Message-ID: <c9f2b84c-8c48-2946-c252-24d5f66c91cc@gmail.com>
Date:   Wed, 31 Mar 2021 01:31:35 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: Re: [PATCH v1 2/6] dt-bindings: memory: tegra30: emc: Replace core
 regulator with power domain

31.03.2021 01:23, Rob Herring пишет:
> On Mon, Mar 29, 2021 at 10:45:58PM +0300, Dmitry Osipenko wrote:
>> Power domain fits much better than a voltage regulator in regards to
>> a proper hardware description and from a software perspective as well.
>> Hence replace the core regulator with the power domain. Note that this
>> doesn't affect any existing DTBs because we haven't started to use the
>> regulator yet, and thus, it's okay to change it.
>>
>> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
>> ---
>>  .../bindings/memory-controllers/nvidia,tegra30-emc.yaml    | 7 ++++---
>>  1 file changed, 4 insertions(+), 3 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-emc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-emc.yaml
>> index 0a2e2c0d0fdd..4a2edb9b8bdc 100644
>> --- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-emc.yaml
>> +++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-emc.yaml
>> @@ -39,9 +39,10 @@ properties:
>>      description:
>>        Phandle of the Memory Controller node.
>>  
>> -  core-supply:
>> +  power-domains:
>> +    $ref: /schemas/types.yaml#/definitions/phandle
> 
> 'power-domains' already has a type. We need to know how many (maxItems).


Alright, I see now what makes the difference. Thank you and Krzysztof
for the suggestion.