04.08.2021 13:58, Rajendra Nayak пишет:
> @@ -2637,6 +2643,8 @@ static int __genpd_dev_pm_attach(struct device *dev, struct device *base_dev,
> {
> struct of_phandle_args pd_args;
> struct generic_pm_domain *pd;
> + struct device_node *np;
> + int pstate;
> int ret;
>
> ret = of_parse_phandle_with_args(dev->of_node, "power-domains",
> @@ -2675,10 +2683,26 @@ static int __genpd_dev_pm_attach(struct device *dev, struct device *base_dev,
> genpd_unlock(pd);
> }
>
> - if (ret)
> + if (ret) {
> genpd_remove_device(pd, dev);
> + return -EPROBE_DEFER;
> + }
> +
> + /* Set the default performance state */
> + np = dev->of_node;
> + if (of_parse_phandle(np, "required-opps", index)) {
> + pstate = of_get_required_opp_performance_state(np, index);
> + if (pstate < 0) {
> + ret = pstate;
> + dev_err(dev, "failed to set required performance state for power-domain %s: %d\n",
> + pd->name, ret);
> + } else {
> + dev_pm_genpd_set_performance_state(dev, pstate);
> + dev_gpd_data(dev)->default_pstate = pstate;
> + }
> + }
Why performance state is set after genpd_power_on()?
