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

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Message-ID: <5948751.DvuYhMxLoT@steina-w>
Date: Tue, 02 Dec 2025 08:49:01 +0100
From: Alexander Stein <alexander.stein@...tq-group.com>
To: 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-arm-kernel@...ts.infradead.org
Cc: linux-pm@...r.kernel.org, imx@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 Marco Felsch <m.felsch@...gutronix.de>,
 Marco Felsch <m.felsch@...gutronix.de>
Subject:
 Re: [PATCH 3/3] pmdomain: imx93-blk-ctrl: add support for optional subnodes

Am Montag, 1. Dezember 2025, 18:12:07 CET schrieb Marco Felsch:
> 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: Alexander Stein <alexander.stein@...tq-group.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;
>  }
>  
> 
> 


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