linux-kernel - Re: [PATCH v5 2/2] soc: loongson2_pm: add power management support

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Message-Id: <569a1c8e-234a-442f-9b9e-956f5bac26dc@app.fastmail.com>
Date:   Fri, 28 Jul 2023 12:46:37 +0200
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "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,
        "Ulf Hansson" <ulf.hansson@...aro.org>
Cc:     "Jianmin Lv" <lvjianmin@...ngson.cn>, wanghongliang@...ngson.cn,
        "Liu Peibao" <liupeibao@...ngson.cn>,
        loongson-kernel@...ts.loongnix.cn, "Liu Yun" <liuyun@...ngson.cn>
Subject: Re: [PATCH v5 2/2] soc: loongson2_pm: add power management support

On Fri, Jul 28, 2023, at 09:49, 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>
> Signed-off-by: Yinbo Zhu <zhuyinbo@...ngson.cn>

Adding Ulf Hansson to Cc

Ulf has recently split out the "genpd" framework and split out
drivers/genpd from drivers/soc since I'm generally not that involved
in the pwoer management side.

Can you have a look at whether this driver should also be part
of drivers/genpd rather than drivers/soc, and/or converted
to use the genpd infrastructure?

Thanks,

       Arnd