linux-kernel - Re: [PATCH v6 2/2] soc: loongson2_pm: add power management support

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Date:   Tue, 08 Aug 2023 16:55:00 +0200
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Ulf Hansson" <ulf.hansson@...aro.org>
Cc:     "Yinbo Zhu" <zhuyinbo@...ngson.cn>,
        "Rob Herring" <robh+dt@...nel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        "Conor Dooley" <conor+dt@...nel.org>, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        soc@...nel.org, "Jianmin Lv" <lvjianmin@...ngson.cn>,
        wanghongliang@...ngson.cn, "Liu Peibao" <liupeibao@...ngson.cn>,
        loongson-kernel@...ts.loongnix.cn, loongarch@...ts.linux.dev,
        "Liu Yun" <liuyun@...ngson.cn>
Subject: Re: [PATCH v6 2/2] soc: loongson2_pm: add power management support

On Tue, Aug 8, 2023, at 16:42, Ulf Hansson wrote:
> On Thu, 3 Aug 2023 at 09:03, Arnd Bergmann <arnd@...db.de> wrote:
>>
>> On Thu, Aug 3, 2023, at 08:37, Yinbo Zhu wrote:
>> > The Loongson-2's power management controller was ACPI, supports ACPI
>> > S2Idle (Suspend To Idle), ACPI S3 (Suspend To RAM), ACPI S4 (Suspend To
>> > Disk), ACPI S5 (Soft Shutdown) and supports multiple wake-up methods
>> > (USB, GMAC, PWRBTN, etc.). This driver was to add power management
>> > controller support that base on dts for Loongson-2 series SoCs.
>> >
>> > Co-developed-by: Liu Yun <liuyun@...ngson.cn>
>> > Signed-off-by: Liu Yun <liuyun@...ngson.cn>
>> > Co-developed-by: Liu Peibao <liupeibao@...ngson.cn>
>> > Signed-off-by: Liu Peibao <liupeibao@...ngson.cn>
>> > Cc: soc@...nel.org
>> > Cc: Ulf Hansson <ulf.hansson@...aro.org>
>> > Signed-off-by: Yinbo Zhu <zhuyinbo@...ngson.cn>
>>
>> I'm still waiting for Ulf to take a look here to see whether
>> this should be in drivers/genpd instead, but he might still
>> be on vacation.
>
> I don't think this belongs in drivers/genpd/ as it's not a genpd
> provider. Besides that, no further comments from me at this point.

Ok, thanks!

Let's try to finish discussing the suspend-address question
and merge it through the soc tree once that is resolved then.

     Arnd