diff options
Diffstat (limited to 'drivers/clk/qcom/clk-hfpll.c')
| -rw-r--r-- | drivers/clk/qcom/clk-hfpll.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/clk/qcom/clk-hfpll.c b/drivers/clk/qcom/clk-hfpll.c index e847d586a73a..7dd17c184b69 100644 --- a/drivers/clk/qcom/clk-hfpll.c +++ b/drivers/clk/qcom/clk-hfpll.c @@ -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); |