clk: qcom: dispcc-sm8450: fix DisplayPort clocks

On SM8450 DisplayPort link clocks use frequency tables inherited from
the vendor kernel, it is not applicable in the upstream kernel. Drop
frequency tables and use clk_byte2_ops for those clocks.

This fixes frequency selection in the OPP core (which otherwise attempts
to use invalid 810 KHz as DP link rate), also fixing the following
message:
msm-dp-display ae90000.displayport-controller: _opp_config_clk_single: failed to set clock rate: -22

Fixes: 16fb89f92ec4 ("clk: qcom: Add support for Display Clock Controller on SM8450")
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240424-dispcc-dp-clocks-v2-1-b44038f3fa96@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

1 files changed, 4 insertions, 16 deletions

diff --git a/drivers/clk/qcom/dispcc-sm8450.c b/drivers/clk/qcom/dispcc-sm8450.c
index 92e9c4e7b13d..49bb4f58c391 100644
--- a/drivers/clk/qcom/dispcc-sm8450.c
+++ b/drivers/clk/qcom/dispcc-sm8450.c
@@ -309,26 +309,17 @@ static struct clk_rcg2 disp_cc_mdss_dptx0_aux_clk_src = {
 	},
 };
 
-static const struct freq_tbl ftbl_disp_cc_mdss_dptx0_link_clk_src[] = {
-	F(162000, P_DP0_PHY_PLL_LINK_CLK, 1, 0, 0),
-	F(270000, P_DP0_PHY_PLL_LINK_CLK, 1, 0, 0),
-	F(540000, P_DP0_PHY_PLL_LINK_CLK, 1, 0, 0),
-	F(810000, P_DP0_PHY_PLL_LINK_CLK, 1, 0, 0),
-	{ }
-};
-
 static struct clk_rcg2 disp_cc_mdss_dptx0_link_clk_src = {
 	.cmd_rcgr = 0x819c,
 	.mnd_width = 0,
 	.hid_width = 5,
 	.parent_map = disp_cc_parent_map_3,
-	.freq_tbl = ftbl_disp_cc_mdss_dptx0_link_clk_src,
 	.clkr.hw.init = &(struct clk_init_data) {
 		.name = "disp_cc_mdss_dptx0_link_clk_src",
 		.parent_data = disp_cc_parent_data_3,
 		.num_parents = ARRAY_SIZE(disp_cc_parent_data_3),
 		.flags = CLK_SET_RATE_PARENT,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_byte2_ops,
 	},
 };
 
@@ -382,13 +373,12 @@ static struct clk_rcg2 disp_cc_mdss_dptx1_link_clk_src = {
 	.mnd_width = 0,
 	.hid_width = 5,
 	.parent_map = disp_cc_parent_map_3,
-	.freq_tbl = ftbl_disp_cc_mdss_dptx0_link_clk_src,
 	.clkr.hw.init = &(struct clk_init_data) {
 		.name = "disp_cc_mdss_dptx1_link_clk_src",
 		.parent_data = disp_cc_parent_data_3,
 		.num_parents = ARRAY_SIZE(disp_cc_parent_data_3),
 		.flags = CLK_SET_RATE_PARENT,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_byte2_ops,
 	},
 };
 
@@ -442,13 +432,12 @@ static struct clk_rcg2 disp_cc_mdss_dptx2_link_clk_src = {
 	.mnd_width = 0,
 	.hid_width = 5,
 	.parent_map = disp_cc_parent_map_3,
-	.freq_tbl = ftbl_disp_cc_mdss_dptx0_link_clk_src,
 	.clkr.hw.init = &(struct clk_init_data) {
 		.name = "disp_cc_mdss_dptx2_link_clk_src",
 		.parent_data = disp_cc_parent_data_3,
 		.num_parents = ARRAY_SIZE(disp_cc_parent_data_3),
 		.flags = CLK_SET_RATE_PARENT,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_byte2_ops,
 	},
 };
 
@@ -502,13 +491,12 @@ static struct clk_rcg2 disp_cc_mdss_dptx3_link_clk_src = {
 	.mnd_width = 0,
 	.hid_width = 5,
 	.parent_map = disp_cc_parent_map_3,
-	.freq_tbl = ftbl_disp_cc_mdss_dptx0_link_clk_src,
 	.clkr.hw.init = &(struct clk_init_data) {
 		.name = "disp_cc_mdss_dptx3_link_clk_src",
 		.parent_data = disp_cc_parent_data_3,
 		.num_parents = ARRAY_SIZE(disp_cc_parent_data_3),
 		.flags = CLK_SET_RATE_PARENT,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_byte2_ops,
 	},
 };