linux-kernel - Re: [PATCH v2 1/1] phy: rockchip: naneng-combphy: compatible reset with old DT

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Message-ID: <Z5sUusWDCfFFeh0f@vaman>
Date: Thu, 30 Jan 2025 11:27:14 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Chukun Pan <amadeus@....edu.cn>
Cc: Heiko Stuebner <heiko@...ech.de>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Jianfeng Liu <liujianfeng1994@...il.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-phy@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] phy: rockchip: naneng-combphy: compatible reset
 with old DT

On 06-01-25, 18:00, Chukun Pan wrote:
> The device tree of RK3568 did not specify reset-names before.
> So add fallback to old behaviour to be compatible with old DT.
> 
> Fixes: fbcbffbac994 ("phy: rockchip: naneng-combphy: fix phy reset")
> Cc: Jianfeng Liu <liujianfeng1994@...il.com>
> Signed-off-by: Chukun Pan <amadeus@....edu.cn>
> ---
>  drivers/phy/rockchip/phy-rockchip-naneng-combphy.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
> index a1532ef8bbe9..8c3ce57f8915 100644
> --- a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
> +++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
> @@ -324,7 +324,10 @@ static int rockchip_combphy_parse_dt(struct device *dev, struct rockchip_combphy
>  
>  	priv->ext_refclk = device_property_present(dev, "rockchip,ext-refclk");
>  
> -	priv->phy_rst = devm_reset_control_get(dev, "phy");
> +	priv->phy_rst = devm_reset_control_get_exclusive(dev, "phy");
> +	/* fallback to old behaviour */
> +	if (PTR_ERR(priv->phy_rst) == -ENOENT)
> +		priv->phy_rst = devm_reset_control_array_get_exclusive(dev);

That is not *same* behaviour on fallback, why _exclusive() for the
fallback?

>  	if (IS_ERR(priv->phy_rst))
>  		return dev_err_probe(dev, PTR_ERR(priv->phy_rst), "failed to get phy reset\n");
>  
> -- 
> 2.25.1

-- 
~Vinod