From: Konrad Dybcio Date: Wed, 4 Mar 2026 13:48:31 +0000 (+0100) Subject: clk: qcom: dispcc[01]-sa8775p: Fix DSI byte clock rate setting X-Git-Tag: ceph-for-7.1-rc4~149^2^3^2~49 X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=2851b6c6a42e22c243aa4cd606a49e2b9acfb6d6;p=ceph-client.git clk: qcom: dispcc[01]-sa8775p: 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: e700bfd2f976 ("clk: qcom: Add support for Display clock Controllers on SA8775P") Signed-off-by: Konrad Dybcio Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20260304-topic-dsi_byte_fixup-v1-5-b79b29f83176@oss.qualcomm.com Signed-off-by: Bjorn Andersson --- diff --git a/drivers/clk/qcom/dispcc0-sa8775p.c b/drivers/clk/qcom/dispcc0-sa8775p.c index aeda9cf4bfee..b248fa970587 100644 --- a/drivers/clk/qcom/dispcc0-sa8775p.c +++ b/drivers/clk/qcom/dispcc0-sa8775p.c @@ -591,7 +591,6 @@ static struct clk_regmap_div mdss_0_disp_cc_mdss_byte0_div_clk_src = { &mdss_0_disp_cc_mdss_byte0_clk_src.clkr.hw, }, .num_parents = 1, - .flags = CLK_SET_RATE_PARENT, .ops = &clk_regmap_div_ops, }, }; @@ -606,7 +605,6 @@ static struct clk_regmap_div mdss_0_disp_cc_mdss_byte1_div_clk_src = { &mdss_0_disp_cc_mdss_byte1_clk_src.clkr.hw, }, .num_parents = 1, - .flags = CLK_SET_RATE_PARENT, .ops = &clk_regmap_div_ops, }, }; diff --git a/drivers/clk/qcom/dispcc1-sa8775p.c b/drivers/clk/qcom/dispcc1-sa8775p.c index cd55d1c11902..9882edbb79f9 100644 --- a/drivers/clk/qcom/dispcc1-sa8775p.c +++ b/drivers/clk/qcom/dispcc1-sa8775p.c @@ -591,7 +591,6 @@ static struct clk_regmap_div mdss_1_disp_cc_mdss_byte0_div_clk_src = { &mdss_1_disp_cc_mdss_byte0_clk_src.clkr.hw, }, .num_parents = 1, - .flags = CLK_SET_RATE_PARENT, .ops = &clk_regmap_div_ops, }, }; @@ -606,7 +605,6 @@ static struct clk_regmap_div mdss_1_disp_cc_mdss_byte1_div_clk_src = { &mdss_1_disp_cc_mdss_byte1_clk_src.clkr.hw, }, .num_parents = 1, - .flags = CLK_SET_RATE_PARENT, .ops = &clk_regmap_div_ops, }, };