Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux

clk: qcom: gcc-sc8280xp: Remove 85.71 MHz USB4 master clock frequency

The USB4 HPG says this frequency remains unused, remove it from the
frequency table to avoid any misunderstandings.

The reason it's unused seems to be that the lower RPMh level required
to support it (LOW_SVS) is not enough for other pieces of the pipeline
which require SVS, which in turn is enough to support a faster, 175 MHz
rate.

Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20251010-topic-gcc_usb4_unused_freq-v1-1-4be5e77d2307@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

authored by

Konrad Dybcio and committed by
Bjorn Andersson
205a5d29 7ec1ba01

-1
-1
drivers/clk/qcom/gcc-sc8280xp.c
··· 2224 2224 }; 2225 2225 2226 2226 static const struct freq_tbl ftbl_gcc_usb4_1_master_clk_src[] = { 2227 - F(85714286, P_GCC_GPLL0_OUT_EVEN, 3.5, 0, 0), 2228 2227 F(175000000, P_GCC_GPLL8_OUT_MAIN, 4, 0, 0), 2229 2228 F(350000000, P_GCC_GPLL8_OUT_MAIN, 2, 0, 0), 2230 2229 { }