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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2019-08-09 15:44:51 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-07 18:59:14 +0200 |
| commit | 18184bd06a692dac3685cd359685f40f912327c2 (patch) | |
| tree | 51c3e0903c6915b10ade2927af2abb562b8b3b04 /drivers | |
| parent | b4b220dfcd3658b596d6c1885a11528e3157b9e6 (diff) | |
| download | linux-stable-18184bd06a692dac3685cd359685f40f912327c2.tar.gz linux-stable-18184bd06a692dac3685cd359685f40f912327c2.tar.bz2 linux-stable-18184bd06a692dac3685cd359685f40f912327c2.zip | |
clk: renesas: cpg-mssr: Set GENPD_FLAG_ALWAYS_ON for clock domain
[ Upstream commit f787216f33ce5b5a2567766398f44ab62157114c ]
The CPG/MSSR 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.
Note that this only affects RZ/A2 SoCs. On R-Car Gen2 and Gen3 SoCs,
the R-Car SYSC driver handles Clock Domain creation, and offloads only
device attachment/detachment to the CPG/MSSR driver.
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clk/renesas/renesas-cpg-mssr.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c b/drivers/clk/renesas/renesas-cpg-mssr.c index 9dfa28d6fd9f..cbe5fb468b7f 100644 --- a/drivers/clk/renesas/renesas-cpg-mssr.c +++ b/drivers/clk/renesas/renesas-cpg-mssr.c @@ -555,7 +555,8 @@ static int __init cpg_mssr_add_clk_domain(struct device *dev, genpd = &pd->genpd; genpd->name = np->name; - genpd->flags = GENPD_FLAG_PM_CLK | GENPD_FLAG_ACTIVE_WAKEUP; + genpd->flags = GENPD_FLAG_PM_CLK | GENPD_FLAG_ALWAYS_ON | + GENPD_FLAG_ACTIVE_WAKEUP; genpd->attach_dev = cpg_mssr_attach_dev; genpd->detach_dev = cpg_mssr_detach_dev; pm_genpd_init(genpd, &pm_domain_always_on_gov, false); |