[PATCH v2 16/20] misc: sram: Enable runtime PM

[Frank Li]

On Mon, Sep 14, 2026 at 01:54:44PM +0200, Linus Walleij wrote:
> Enable runtime PM for generic SRAM devices after probe has initialized
> the SRAM mappings and partitions.
>
> This lets SRAM devices with attached power domains be managed through
> runtime PM references from their consumers.
>
> Assisted-by: LLM
> Signed-off-by: Linus Walleij <linusw at kernel.org>
> ---

Reviewed-by: Frank Li <Frank.Li at nxp.com>

>  drivers/misc/sram.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/misc/sram.c b/drivers/misc/sram.c
> index c8990e83a65a..7f19dca7b818 100644
> --- a/drivers/misc/sram.c
> +++ b/drivers/misc/sram.c
> @@ -13,6 +13,7 @@
>  #include <linux/of.h>
>  #include <linux/of_address.h>
>  #include <linux/platform_device.h>
> +#include <linux/pm_runtime.h>
>  #include <linux/regmap.h>
>  #include <linux/slab.h>
>  #include <linux/mfd/syscon.h>
> @@ -425,6 +426,10 @@ static int sram_probe(struct platform_device *pdev)
>  			goto err_free_partitions;
>  	}
>
> +	ret = devm_pm_runtime_set_active_enabled(&pdev->dev);
> +	if (ret)
> +		goto err_free_partitions;
> +
>  	if (sram->pool)
>  		dev_dbg(sram->dev, "SRAM pool: %zu KiB @ 0x%p\n",
>  			gen_pool_size(sram->pool) / 1024, sram->virt_base);
>
> --
> 2.55.0
>