--- linux-11.01.05/drivers/gpu/drm/tidss/tidss_dispc_regs.h	2025-07-02 05:17:52.000000000 +0800
+++ linux-11.01.05/drivers/gpu/drm/tidss/tidss_dispc_regs.h	2026-05-15 16:15:25.175222066 +0800
@@ -254,4 +254,11 @@
 
 #define OLDI_PWRDN_TX				BIT(8)
 
+#define SCOTT_TEST 1
+#if SCOTT_TEST /* scott, 2026/05/15 */
+/* Bits in the MAIN_CTRL_MMR_CFG0_DPI0_CLK_CTRL register */
+#define DPI0_CLK_CTRL_DATA_CLK_INVDIS BIT(8)
+#define DPI0_CLK_CTRL_SYNC_CLK_INVDIS BIT(9)
+#endif /* SCOTT_TEST */
+
 #endif /* __TIDSS_DISPC_REGS_H */
--- linux-11.01.05/drivers/gpu/drm/tidss/tidss_dispc.c	2025-07-02 05:17:52.000000000 +0800
+++ linux-11.01.05/drivers/gpu/drm/tidss/tidss_dispc.c	2026-05-15 16:19:04.629858695 +0800
@@ -560,7 +560,9 @@
 	const struct dispc_features *feat;
 
 	struct clk *fclk;
-
+#if SCOTT_TEST /* scott, 2026/05/15 */
+	struct regmap *syscon_dpi_io_ctrl;
+#endif /* SCOTT_TEST */
 	bool is_enabled;
 
 	struct dss_vp_data vp_data[TIDSS_MAX_PORTS];
@@ -1323,6 +1325,15 @@
 
 		dispc_enable_oldi(dispc, hw_videoport, fmt);
 	}
+#if SCOTT_TEST /* scott, 2026/05/15 */
+	bool ipc = !!(tstate->bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE);
+	bool rf = !!(tstate->bus_flags & DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE);
+	if (dispc->vp_data[hw_videoport].gamma_table && dispc->syscon_dpi_io_ctrl) {
+		regmap_write(dispc->syscon_dpi_io_ctrl, 0x0,
+			     (!ipc ? DPI0_CLK_CTRL_DATA_CLK_INVDIS : 0) |
+			     (rf ? DPI0_CLK_CTRL_SYNC_CLK_INVDIS : 0));
+	}
+#endif /* SCOTT_TEST */
 }
 
 void dispc_vp_enable(struct dispc_device *dispc, u32 hw_videoport,
@@ -3396,6 +3407,20 @@
 
 	dispc_init_errata(dispc);
 
+#if SCOTT_TEST /* scott, 2026/05/15 */
+	dispc->syscon_dpi_io_ctrl = syscon_regmap_lookup_by_compatible("ti,am625-dss-dpi0-clk-ctrl");
+	if (IS_ERR(dispc->syscon_dpi_io_ctrl)) {
+		if (PTR_ERR(dispc->syscon_dpi_io_ctrl) != -ENODEV) {
+			r = dev_err_probe(dispc->dev, PTR_ERR(dispc->syscon_dpi_io_ctrl),
+					  "DISPC: syscon_regmap_lookup_by_phandle failed.\n");
+			return r;
+		}
+
+		dispc->syscon_dpi_io_ctrl = NULL;
+	}
+	dev_warn(dev, "===>>> scott add patch here!!\n");
+#endif /* SCOTT_TEST */
+
 	dispc->fourccs = devm_kcalloc(dev, ARRAY_SIZE(dispc_color_formats),
 				      sizeof(*dispc->fourccs), GFP_KERNEL);
 	if (!dispc->fourccs)