linux-kernel - Re: [PATCH V3 4/8] remoteproc: imx

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Message-ID: <20210413172817.GB750651@xps15>
Date:   Tue, 13 Apr 2021 11:28:17 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     peng.fan@....nxp.com
Cc:     ohad@...ery.com, bjorn.andersson@...aro.org,
        o.rempel@...gutronix.de, robh+dt@...nel.org,
        devicetree@...r.kernel.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-remoteproc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Peng Fan <peng.fan@....com>
Subject: Re: [PATCH V3 4/8] remoteproc: imx_rproc: make clk optional

On Thu, Apr 08, 2021 at 09:54:54AM +0800, peng.fan@....nxp.com wrote:
> From: Peng Fan <peng.fan@....com>
> 
> To i.MX7ULP, M4 is the master to control everything, so it not need
> clk from A7.
> 
> Reviewed-by: Richard Zhu <hongxing.zhu@....com>
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  drivers/remoteproc/imx_rproc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
> index d6338872c6db..ca17f520d904 100644
> --- a/drivers/remoteproc/imx_rproc.c
> +++ b/drivers/remoteproc/imx_rproc.c
> @@ -635,7 +635,7 @@ static int imx_rproc_probe(struct platform_device *pdev)
>  	if (ret)
>  		goto err_put_mbox;
>  
> -	priv->clk = devm_clk_get(dev, NULL);
> +	priv->clk = devm_clk_get_optional(dev, NULL);

Overnight the clock becomes optional for all remote processors?  Why not call
devm_clk_get() or devm_clk_get_optional() based on the remote processor type in
a new function called imx_rproc_clk_get()?

>  	if (IS_ERR(priv->clk)) {
>  		dev_err(dev, "Failed to get clock\n");
>  		ret = PTR_ERR(priv->clk);
> -- 
> 2.30.0
>