]> git.ipfire.org Git - thirdparty/kernel/linux.git/commit
clk: qcom: dispcc-kaanapali: Fix DSI byte clock rate setting
authorKonrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Wed, 4 Mar 2026 13:48:28 +0000 (14:48 +0100)
committerBjorn Andersson <andersson@kernel.org>
Wed, 4 Mar 2026 16:24:53 +0000 (10:24 -0600)
commite892f4e3f3d558ce5d7595dca7cce2bd170a19fa
treef0e36a8977b4ea519090c3812c82c9ce37b0a681
parent98ea9eda030587601db56425efcd32263d853591
clk: qcom: dispcc-kaanapali: Fix DSI byte clock rate setting

The clock tree for byte_clk_src is as follows:

   ┌──────byte0_clk_src─────┐
   │                        │
byte0_clk            byte0_div_clk_src
                            │
                     byte0_intf_clk

If both of its direct children have CLK_SET_RATE_PARENT with different
requests, byte0_clk_src (and its parent) will be reconfigured. In this
case, byte0_intf should strictly follow the rate of byte0_clk (with
some adjustments based on PHY mode).

Remove CLK_SET_RATE_PARENT from byte0_div_clk_src to avoid this issue.

Fixes: 6c6750b7061c ("clk: qcom: dispcc: Add support for display clock controller Kaanapali")
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260304-topic-dsi_byte_fixup-v1-2-b79b29f83176@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
drivers/clk/qcom/dispcc-kaanapali.c