Am Mittwoch, dem 20.07.2022 um 06:34 +0200 schrieb Martin Kepplinger:
> For boards that use power-domains' power-supplies that need interrupts
> to work (like regulator over i2c), set GENPD_FLAG_IRQ_ON.
> This will tell genpd to adjust accordingly. Currently it "only" sets the
> correct suspend/resume callbacks.
>
> This fixes suspend/resume on imx8mq-librem5 boards (tested) and
> imx8mq-evk (by looking at dts) and possibly more.
>
> Signed-off-by: Martin Kepplinger <martin.kepplinger@xxxxxxx>
> ---
> drivers/soc/imx/gpcv2.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c
> index 85aa86e1338a..46d2ead2352b 100644
> --- a/drivers/soc/imx/gpcv2.c
> +++ b/drivers/soc/imx/gpcv2.c
> @@ -1303,6 +1303,7 @@ static const struct imx_pgc_domain_data imx8mn_pgc_domain_data = {
> static int imx_pgc_domain_probe(struct platform_device *pdev)
> {
> struct imx_pgc_domain *domain = pdev->dev.platform_data;
> + struct device_node *dn;
> int ret;
>
> domain->dev = &pdev->dev;
> @@ -1333,6 +1334,14 @@ static int imx_pgc_domain_probe(struct platform_device *pdev)
> regmap_update_bits(domain->regmap, domain->regs->map,
> domain->bits.map, domain->bits.map);
>
> + dn = of_parse_phandle(domain->dev->of_node, "power-supply", 0);
> + if (dn) {
> + while ((dn = of_get_next_parent(dn))) {
> + if (of_get_property(dn, "interrupts", NULL))
> + domain->genpd.flags |= GENPD_FLAG_IRQ_ON;
> + }
> + }
> +
While I understand the intention, I think the DT walking is overkill. I
believe that there are no cases where we have a external regulator
attached to the PD and the devices in the domain needing noirq support.
I think it's sufficient to simply set the IRQ_ON flag based on presence
of the power-supply property on the domain DT node.
Regards,
Lucas
> ret = pm_genpd_init(&domain->genpd, NULL, true);
> if (ret) {
> dev_err(domain->dev, "Failed to init power domain\n");
