6.6-stable review patch. If anyone has any objections, please let me know.
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From: Satya Priya Kakitapalli quic_skakitap@quicinc.com
commit 85e8ee59dfde1a7b847fbed0778391392cd985cb upstream.
Currently, clk_zonda_pll_set_rate polls for the PLL to lock even if the PLL is disabled. However, if the PLL is disabled then LOCK_DET will never assert and we'll return an error. There is no reason to poll LOCK_DET if the PLL is already disabled, so skip polling in this case.
Fixes: f21b6bfecc27 ("clk: qcom: clk-alpha-pll: add support for zonda pll") Cc: stable@vger.kernel.org Signed-off-by: Satya Priya Kakitapalli quic_skakitap@quicinc.com Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Link: https://lore.kernel.org/r/20240731062916.2680823-4-quic_skakitap@quicinc.com Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/clk/qcom/clk-alpha-pll.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/clk/qcom/clk-alpha-pll.c +++ b/drivers/clk/qcom/clk-alpha-pll.c @@ -2062,6 +2062,9 @@ static int clk_zonda_pll_set_rate(struct regmap_write(pll->clkr.regmap, PLL_ALPHA_VAL(pll), a); regmap_write(pll->clkr.regmap, PLL_L_VAL(pll), l);
+ if (!clk_hw_is_enabled(hw)) + return 0; + /* Wait before polling for the frequency latch */ udelay(5);