Commit fcfbfe37 authored by Christian Marangi's avatar Christian Marangi Committed by Bjorn Andersson
Browse files

clk: qcom: clk-hfpll: use poll_timeout macro 



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: default avatarAnsuel Smith <ansuelsmth@gmail.com>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220430054458.31321-2-ansuelsmth@gmail.com
parent 255a47e7

drivers/clk/qcom/clk-hfpll.c

+9 −6
Original line number Diff line number Diff line
@@ -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);