linux-kernel - Re: [PATCH 3/3] pmdomain: imx93-blk-ctrl: add support for optional subnodes

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Message-ID: <aS4Z5QS9VBU6ObVF@lizhi-Precision-Tower-5810>
Date: Mon, 1 Dec 2025 17:42:45 -0500
From: Frank Li <Frank.li@....com>
To: Marco Felsch <m.felsch@...gutronix.de>
Cc: Ulf Hansson <ulf.hansson@...aro.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, linux-pm@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] pmdomain: imx93-blk-ctrl: add support for optional
 subnodes

On Mon, Dec 01, 2025 at 06:12:07PM +0100, Marco Felsch wrote:
> This particular block can have DT subnodes describing the LVDS LDB, MIPI
> DSI and parallel DPI bridge.
>
> Scan for possible sub-devices within the driver, instead of misusing the
> simple-bus to perform the scan.
>
> Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
> ---

Reviewed-by: Frank Li <Frank.Li@....com>

>  drivers/pmdomain/imx/imx93-blk-ctrl.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/pmdomain/imx/imx93-blk-ctrl.c b/drivers/pmdomain/imx/imx93-blk-ctrl.c
> index 13b0de6dd689cf944e034f7666a4e97b0118e3bd..8f79cabe07face872cb396bfb7329c230c4a97fe 100644
> --- a/drivers/pmdomain/imx/imx93-blk-ctrl.c
> +++ b/drivers/pmdomain/imx/imx93-blk-ctrl.c
> @@ -7,6 +7,7 @@
>  #include <linux/device.h>
>  #include <linux/module.h>
>  #include <linux/of.h>
> +#include <linux/of_platform.h>
>  #include <linux/platform_device.h>
>  #include <linux/pm_domain.h>
>  #include <linux/pm_runtime.h>
> @@ -311,6 +312,10 @@ static int imx93_blk_ctrl_probe(struct platform_device *pdev)
>  	if (ret)
>  		return dev_err_probe(dev, ret, "failed to add genpd_provider release callback\n");
>
> +	ret = devm_of_platform_populate(dev);
> +	if (ret)
> +		return dev_err_probe(dev, ret, "failed to populate blk-ctrl sub-devices\n");
> +
>  	return 0;
>  }
>
>
> --
> 2.47.3
>