6.9-stable review patch. If anyone has any objections, please let me know.
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From: Gabor Juhos j4g8y7@gmail.com
[ Upstream commit c55f7ee2ec239b6afd8639c7ac06493876deb0ea ]
According to ipq5018.dtsi, the maximum supported rate by the CPU is 1.008 GHz on the IPQ5018 platform, however the current configuration of the PLL results in 1.2 GHz rate.
Change the 'L' value in the PLL configuration to limit the rate to 1.008 GHz. The downstream kernel also uses the same value [1]. Also add a comment to indicate the desired frequency.
[1] https://git.codelinaro.org/clo/qsdk/oss/kernel/linux-ipq-5.4/-/blob/NHSS.QSD...
Fixes: 50492f929486 ("clk: qcom: apss-ipq-pll: add support for IPQ5018") Signed-off-by: Gabor Juhos j4g8y7@gmail.com Reviewed-by: Konrad Dybcio konrad.dybcio@linaro.org Link: https://lore.kernel.org/r/20240326-fix-ipq5018-apss-pll-rate-v1-1-82ab31c9da... Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/qcom/apss-ipq-pll.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/qcom/apss-ipq-pll.c b/drivers/clk/qcom/apss-ipq-pll.c index 678b805f13d45..5e3da5558f4e0 100644 --- a/drivers/clk/qcom/apss-ipq-pll.c +++ b/drivers/clk/qcom/apss-ipq-pll.c @@ -73,8 +73,9 @@ static struct clk_alpha_pll ipq_pll_stromer_plus = { }, };
+/* 1.008 GHz configuration */ static const struct alpha_pll_config ipq5018_pll_config = { - .l = 0x32, + .l = 0x2a, .config_ctl_val = 0x4001075b, .config_ctl_hi_val = 0x304, .main_output_mask = BIT(0),