Messages in this thread | | | Date | Fri, 24 Feb 2017 05:20:12 -0800 | From | Bjorn Andersson <> | Subject | Re: [PATCH 2/7] clk: qcom: Add a custom udelay needed for some branch clocks |
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On Wed 19 Oct 04:28 PDT 2016, Rajendra Nayak wrote:
> Some branch clocks marked with a BRANCH_HALT_DELAY might need more > than the default 10us delay. Have a way to specify a custom delay > in such cases > > Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Regards, Bjorn
> --- > drivers/clk/qcom/clk-branch.c | 5 ++++- > drivers/clk/qcom/clk-branch.h | 2 ++ > 2 files changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/clk/qcom/clk-branch.c b/drivers/clk/qcom/clk-branch.c > index 26f7af31..1c11f12 100644 > --- a/drivers/clk/qcom/clk-branch.c > +++ b/drivers/clk/qcom/clk-branch.c > @@ -82,7 +82,10 @@ static int clk_branch_wait(const struct clk_branch *br, bool enabling, > return 0; > > if (br->halt_check == BRANCH_HALT_DELAY || (!enabling && voted)) { > - udelay(10); > + if (br->udelay) > + udelay(br->udelay); > + else > + udelay(10); > } else if (br->halt_check == BRANCH_HALT_ENABLE || > br->halt_check == BRANCH_HALT || > (enabling && voted)) { > diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h > index 284df3f..4c56a35 100644 > --- a/drivers/clk/qcom/clk-branch.h > +++ b/drivers/clk/qcom/clk-branch.h > @@ -26,6 +26,7 @@ > * @halt_reg: halt register > * @halt_bit: ANDed with @halt_reg to test for clock halted > * @halt_check: type of halt checking to perform > + * @udelay: custom udelay incase of BRANCH_HALT_DELAY, default is 10us > * @clkr: handle between common and hardware-specific interfaces > * > * Clock which can gate its output. > @@ -43,6 +44,7 @@ struct clk_branch { > #define BRANCH_HALT_ENABLE_VOTED (BRANCH_HALT_ENABLE | BRANCH_VOTED) > #define BRANCH_HALT_DELAY 2 /* No bit to check; just delay */ > > + u32 udelay; > struct clk_regmap clkr; > }; > > -- > QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member > of Code Aurora Forum, hosted by The Linux Foundation >
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