linux-kernel - Re: [PATCH 17/21] power: reset: at91-poweroff: lookup for proper pmc dt node for sam9x7

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Message-ID: <c3f7c08f-272a-5abb-da78-568c408f40de@microchip.com>
Date:   Mon, 5 Jun 2023 15:04:34 +0200
From:   Nicolas Ferre <nicolas.ferre@...rochip.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Varshini Rajendran <varshini.rajendran@...rochip.com>,
        <tglx@...utronix.de>, <maz@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <alexandre.belloni@...tlin.com>, <claudiu.beznea@...rochip.com>,
        <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <gregkh@...uxfoundation.org>,
        <linux@...linux.org.uk>, <mturquette@...libre.com>,
        <sboyd@...nel.org>, <sre@...nel.org>, <broonie@...nel.org>,
        <arnd@...db.de>, <gregory.clement@...tlin.com>,
        <sudeep.holla@....com>, <balamanikandan.gunasundar@...rochip.com>,
        <mihai.sain@...rochip.com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <netdev@...r.kernel.org>,
        <linux-usb@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <linux-pm@...r.kernel.org>
CC:     <Hari.PrasathGE@...rochip.com>, <cristian.birsan@...rochip.com>,
        <durai.manickamkr@...rochip.com>, <manikandan.m@...rochip.com>,
        <dharma.b@...rochip.com>, <nayabbasha.sayed@...rochip.com>,
        <balakrishnan.s@...rochip.com>
Subject: Re: [PATCH 17/21] power: reset: at91-poweroff: lookup for proper pmc
 dt node for sam9x7

On 05/06/2023 at 08:43, Krzysztof Kozlowski wrote:
> On 03/06/2023 22:02, Varshini Rajendran wrote:
>> Use sam9x7 pmc's compatible to lookup for in the SHDWC driver
>>
>> Signed-off-by: Varshini Rajendran <varshini.rajendran@...rochip.com>
>> ---
>>   drivers/power/reset/at91-sama5d2_shdwc.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/power/reset/at91-sama5d2_shdwc.c b/drivers/power/reset/at91-sama5d2_shdwc.c
>> index d8ecffe72f16..d0f29b99f25e 100644
>> --- a/drivers/power/reset/at91-sama5d2_shdwc.c
>> +++ b/drivers/power/reset/at91-sama5d2_shdwc.c
>> @@ -326,6 +326,7 @@ static const struct of_device_id at91_pmc_ids[] = {
>>        { .compatible = "atmel,sama5d2-pmc" },
>>        { .compatible = "microchip,sam9x60-pmc" },
>>        { .compatible = "microchip,sama7g5-pmc" },
>> +     { .compatible = "microchip,sam9x7-pmc" },
> 
> Why do you need new entry if these are compatible?

Yes, PMC is very specific to a SoC silicon. As we must look for it in 
the shutdown controller, I think we need a new entry here.

Best regards,
   Nicolas

-- 
Nicolas Ferre