On Fri, Nov 04, 2022 at 10:20:44AM +0100, Johan Hovold wrote:
> There are three UFS reference clocks on SC8280XP which are used as
> follows:
>
> - The GCC_UFS_REF_CLKREF_CLK clock is fed to any UFS device connected
> to either controller.
>
> - The GCC_UFS_1_CARD_CLKREF_CLK and GCC_UFS_CARD_CLKREF_CLK clocks
> provide reference clocks to the two PHYs.
>
> Note that this depends on first updating the clock driver to reflect
> that all three clocks are sourced from CXO. Specifically, the UFS
> controller driver expects the device reference clock to have a valid
> frequency:
>
> ufshcd-qcom 1d84000.ufs: invalid ref_clk setting = 0
>
> Fixes: 152d1faf1e2f ("arm64: dts: qcom: add SC8280XP platform")
> Fixes: 8d6b458ce6e9 ("arm64: dts: qcom: sc8280xp: fix ufs_card_phy ref clock")
> Fixes: f3aa975e230e ("arm64: dts: qcom: sc8280xp: correct ref clock for ufs_mem_phy")
> Link: https://lore.kernel.org/lkml/Y2OEjNAPXg5BfOxH@xxxxxxxxxxxxxxxxxxxx/
> Cc: stable@xxxxxxxxxxxxxxx # 5.20
> Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Reviewed-by: Brian Masney <bmasney@xxxxxxxxxx>
Note that there was no 5.20 kernel; that should be 6.0. Bjorn should be
able to fix this up during merge.
https://en.wikipedia.org/wiki/Linux_kernel_version_history
