diff options
| author |   Geert Uytterhoeven <geert+renesas@glider.be> | 2019-08-09 15:44:51 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2019-08-23 11:09:57 +0200 |
| commit | f787216f33ce5b5a2567766398f44ab62157114c (patch) | |
| tree | 56d1a54137f082651eae136a208574ad7c5bd69e /drivers/clk | |
| parent | clk: renesas: r9a06g032: Set GENPD_FLAG_ALWAYS_ON for clock domain (diff) | |
| download | linux-dev-f787216f33ce5b5a2567766398f44ab62157114c.tar.xz linux-dev-f787216f33ce5b5a2567766398f44ab62157114c.zip | |
clk: renesas: cpg-mssr: Set GENPD_FLAG_ALWAYS_ON for clock domain
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>
Diffstat (limited to 'drivers/clk')
| -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 52bbb9ce3807..cc39c8fff8a1 100644 --- a/drivers/clk/renesas/renesas-cpg-mssr.c +++ b/drivers/clk/renesas/renesas-cpg-mssr.c @@ -551,7 +551,8 @@ 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); |