clk: qcom: apss-ipq-pll: fix PLL rate for IPQ5018

BugLink: https://bugs.launchpad.net/bugs/2071621

[ 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.QSDK.12.4/drivers/clk/qcom/apss-ipq5018.c?ref_type=heads#L151

Fixes: 50492f9294 ("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-v1-1-82ab31c9da7e@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

This commit is contained in:

Gabor Juhos

2024-03-26 14:34:11 +01:00

committed by

Stefan Bader

parent 2008c58ec7

commit 2798cd2d3f

1 changed files with 2 additions and 1 deletions

									
										drivers/clk/qcom/apss-ipq-pll.c
									
		+2
		-1
	
												View File
												
				@@ -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),