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| author |   Geert Uytterhoeven <geert+renesas@glider.be> | 2019-08-09 15:38:34 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2019-08-23 11:09:49 +0200 |
| commit | a459a184c978ca9ad538aab93aafdde873953f30 (patch) | |
| tree | ccd0f3bb83aed7cede51d5e6fe47782a72530d00 /drivers/clk | |
| parent | dt-bindings: clk: emev2: Rename bindings documentation file (diff) | |
| download | linux-dev-a459a184c978ca9ad538aab93aafdde873953f30.tar.xz linux-dev-a459a184c978ca9ad538aab93aafdde873953f30.zip | |
clk: renesas: mstp: Set GENPD_FLAG_ALWAYS_ON for clock domain
The CPG/MSTP Clock Domain driver does not implement the
generic_pm_domain.power_{on,off}() callbacks, as the domain itself
cannot be powered down. Hence the domain should be marked as always-on
by setting the GENPD_FLAG_ALWAYS_ON flag, to prevent the core PM Domain
code from considering it for power-off, and doing unnessary processing.
This also gets rid of a boot warning when the Clock Domain contains an
IRQ-safe device, e.g. on RZ/A1:
sh_mtu2 fcff0000.timer: PM domain cpg_clocks will not be powered off
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/renesas/clk-mstp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/clk/renesas/clk-mstp.c b/drivers/clk/renesas/clk-mstp.c index 2db9093546c6..e326e6dc09fc 100644 --- a/drivers/clk/renesas/clk-mstp.c +++ b/drivers/clk/renesas/clk-mstp.c @@ -334,7 +334,8 @@ void __init cpg_mstp_add_clk_domain(struct device_node *np) return; pd->name = np->name; - pd->flags = GENPD_FLAG_PM_CLK | GENPD_FLAG_ACTIVE_WAKEUP; + pd->flags = GENPD_FLAG_PM_CLK | GENPD_FLAG_ALWAYS_ON | + GENPD_FLAG_ACTIVE_WAKEUP; pd->attach_dev = cpg_mstp_attach_dev; pd->detach_dev = cpg_mstp_detach_dev; pm_genpd_init(pd, &pm_domain_always_on_gov, false); |