diff options
| author | Rajendra Nayak <rnayak@codeaurora.org> | 2018-03-23 11:26:14 +0300 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2018-06-01 21:14:48 +0300 |
| commit | fb55bea1fe436b2b00a8bcc0bad69c76409270e8 (patch) | |
| tree | 29dd1271dbb7cdc584d5742880f72d4d2400f482 /drivers/clk/qcom/gdsc.c | |
| parent | 60cc43fc888428bb2f18f08997432d426a243338 (diff) | |
| download | linux-fb55bea1fe436b2b00a8bcc0bad69c76409270e8.tar.xz | |
clk: qcom: gdsc: Add support for ALWAYS_ON gdscs
Some GDSCs might have software control to turn them off, but we might
want to keep them enabled always, in some cases because of lack of
support in kernel to handle a graceful turning off/on of such GDSCs.
Most common instances would be the GDCSs which power up the noc/bus
fabrics, which need bus drivers to handle them and atleast support for
which is missing on all qcom SoCs.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/qcom/gdsc.c')
| -rw-r--r-- | drivers/clk/qcom/gdsc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c index a4f3580587b7..15f4bb5efd68 100644 --- a/drivers/clk/qcom/gdsc.c +++ b/drivers/clk/qcom/gdsc.c @@ -291,6 +291,14 @@ static int gdsc_init(struct gdsc *sc) if ((sc->flags & VOTABLE) && on) gdsc_enable(&sc->pd); + /* If ALWAYS_ON GDSCs are not ON, turn them ON */ + if (sc->flags & ALWAYS_ON) { + if (!on) + gdsc_enable(&sc->pd); + on = true; + sc->pd.flags |= GENPD_FLAG_ALWAYS_ON; + } + if (on || (sc->pwrsts & PWRSTS_RET)) gdsc_force_mem_on(sc); else |