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clk: qcom: clk-hfpll: use poll_timeout macro

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Use regmap_read_poll_timeout macro instead of do-while structure to tidy
things up. Also set a timeout to prevent any sort of system stall.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220430054458.31321-2-ansuelsmth@gmail.com
This commit is contained in:
Ansuel Smith 2022-04-30 07:44:56 +02:00 committed by Bjorn Andersson
parent 255a47e745
commit fcfbfe373d
1 changed files with 9 additions and 6 deletions
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15
drivers/clk/qcom/clk-hfpll.c
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@ -72,13 +72,16 @@ static void __clk_hfpll_enable(struct clk_hw *hw)
regmap_update_bits(regmap, hd->mode_reg, PLL_RESET_N, PLL_RESET_N);
/* Wait for PLL to lock. */
if (hd->status_reg) {
do {
regmap_read(regmap, hd->status_reg, &val);
} while (!(val & BIT(hd->lock_bit)));
} else {
if (hd->status_reg)
/*
* Busy wait. Should never timeout, we add a timeout to
* prevent any sort of stall.
*/
regmap_read_poll_timeout(regmap, hd->status_reg, val,
!(val & BIT(hd->lock_bit)), 0,
100 * USEC_PER_MSEC);
else
udelay(60);
}
/* Enable PLL output. */
regmap_update_bits(regmap, hd->mode_reg, PLL_OUTCTRL, PLL_OUTCTRL);