mirror of https://gitee.com/openkylin/linux.git
clk: renesas: mstp: Use always-on governor for Clock Domain
As a pure Clock Domain does not have the concept of powering the domain itself, the CPG/MSTP driver does not provide power_off() and power_on() callbacks. However, the genpd core may still perform a dummy power down, causing /sys/kernel/debug/pm_genpd/pm_genpd_summary to report the domain's status being "off-0". Use the always-on governor to make sure the domain is never powered down, and always shows up as "on" in pm_genpd_summary. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
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@ -319,7 +319,7 @@ void __init cpg_mstp_add_clk_domain(struct device_node *np)
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pd->flags = GENPD_FLAG_PM_CLK;
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pd->flags = GENPD_FLAG_PM_CLK;
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pd->attach_dev = cpg_mstp_attach_dev;
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pd->attach_dev = cpg_mstp_attach_dev;
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pd->detach_dev = cpg_mstp_detach_dev;
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pd->detach_dev = cpg_mstp_detach_dev;
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pm_genpd_init(pd, &simple_qos_governor, false);
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pm_genpd_init(pd, &pm_domain_always_on_gov, false);
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of_genpd_add_provider_simple(np, pd);
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of_genpd_add_provider_simple(np, pd);
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}
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}
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