linux-kernel - Re: [PATCH v5 8/8] net: stmmac: qcom-ethqos: add support for sa8255p

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Message-ID: <5fea976c-a047-43a4-a062-fee1d40447b4@oss.qualcomm.com>
Date: Fri, 7 Nov 2025 12:10:02 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Bartosz Golaszewski <brgl@...ev.pl>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Richard Cochran <richardcochran@...il.com>,
        Andrew Lunn <andrew+netdev@...n.ch>,
        "David S. Miller"
 <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
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Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org,
        Drew Fustini
 <dfustini@...storrent.com>, linux-sunxi@...ts.linux.dev,
        linux-amlogic@...ts.infradead.org, linux-mips@...r.kernel.org,
        imx@...ts.linux.dev, linux-renesas-soc@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, sophgo@...ts.linux.dev,
        linux-riscv@...ts.infradead.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v5 8/8] net: stmmac: qcom-ethqos: add support for sa8255p

On 11/7/25 11:29 AM, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> 
> Extend the driver to support a new model - sa8255p. Unlike the
> previously supported variants, this one's power management is done in
> the firmware using SCMI. This is modeled in linux using power domains so
> add support for them.
> 
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> ---

[...]
> +static void qcom_ethqos_pd_serdes_powerdown(struct net_device *ndev, void *priv)
> +{
> +	struct qcom_ethqos *ethqos = priv;
> +
> +	/* TODO set level */
> +	qcom_ethqos_domain_off(ethqos, ETHQOS_PD_SERDES);

dev_pm_opp_set_level(dev, 0);?

perhaps with _index?

Konrad