From 4ae118d427f6e3eed85d0171203235580abe1795 Mon Sep 17 00:00:00 2001
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Date: Sun, 1 May 2022 22:56:20 +0300
Subject: drm/msm/dsi: pll_7nm: remove unsupported dividers for DSI pixel clock
Git-commit: b9b19980a14fc3c37cd3936ef84a5a47aa891965
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

Remove dividers that are not recommended for DSI DPHY mode when setting
up the clock tree for the DSI pixel clock.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/484333/
Link: https://lore.kernel.org/r/20220501195620.4135080-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
index 6e506feb111f..66ed1919a1db 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
@@ -586,7 +586,7 @@ static int dsi_7nm_set_usecase(struct msm_dsi_phy *phy)
 static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provided_clocks)
 {
 	char clk_name[32], parent[32], vco_name[32];
-	char parent2[32], parent3[32], parent4[32];
+	char parent2[32];
 	struct clk_init_data vco_init = {
 		.parent_data = &(const struct clk_parent_data) {
 			.fw_name = "ref",
@@ -687,15 +687,13 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provide
 		snprintf(clk_name, 32, "dsi%d_pclk_mux", pll_7nm->phy->id);
 		snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_7nm->phy->id);
 		snprintf(parent2, 32, "dsi%d_pll_by_2_bit_clk", pll_7nm->phy->id);
-		snprintf(parent3, 32, "dsi%d_pll_out_div_clk", pll_7nm->phy->id);
-		snprintf(parent4, 32, "dsi%d_pll_post_out_div_clk", pll_7nm->phy->id);
 
 		hw = devm_clk_hw_register_mux(dev, clk_name,
 					((const char *[]){
-					parent, parent2, parent3, parent4
-					}), 4, 0, pll_7nm->phy->base +
+					parent, parent2,
+					}), 2, 0, pll_7nm->phy->base +
 					REG_DSI_7nm_PHY_CMN_CLK_CFG1,
-					0, 2, 0, NULL);
+					0, 1, 0, NULL);
 		if (IS_ERR(hw)) {
 			ret = PTR_ERR(hw);
 			goto fail;
-- 
2.38.1