kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/drivers/gpu/drm/bridge/maxim-max96755f.c
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@@ -41,6 +41,7 @@
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 	bool dv_swp_ab;
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 	bool dpi_deskew_en;
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 	bool split_mode;
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+	bool bridge_dual_link;
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 	u32 dsi_lane_map[4];
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 	struct {
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@@ -283,7 +284,7 @@
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 static void max96755f_bridge_reset_oneshot(struct max96755f_bridge *ser)
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 {
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-	regmap_update_bits(ser->regmap, 0x10, RESET_ONESHOT,
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+	regmap_update_bits(ser->regmap, 0x0010, RESET_ONESHOT,
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 			   FIELD_PREP(RESET_ONESHOT, 1));
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 	mdelay(100);
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@@ -324,6 +325,12 @@
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 				   FIELD_PREP(START_PORTAY, 1));
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 		regmap_update_bits(ser->regmap, 0x02, VID_TX_EN_X,
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 				   FIELD_PREP(VID_TX_EN_X, 1));
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+		if (ser->bridge_dual_link) {
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+			regmap_update_bits(ser->regmap, 0x0010,
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+				   AUTO_LINK | LINK_CFG,
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+				   FIELD_PREP(AUTO_LINK, 0) |
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+				   FIELD_PREP(LINK_CFG, DUAL_LINK));
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+		}
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 	}
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 	max96755f_bridge_reset_oneshot(ser);
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@@ -358,7 +365,7 @@
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 			   FIELD_PREP(VID_TX_EN_X, 0) |
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 			   FIELD_PREP(VID_TX_EN_Y, 0));
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-	if (ser->split_mode)
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+	if (ser->split_mode || ser->bridge_dual_link)
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 		regmap_update_bits(ser->regmap, 0x0010,
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 				   AUTO_LINK | LINK_CFG,
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 				   FIELD_PREP(AUTO_LINK, 1) |
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@@ -487,6 +494,7 @@
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 static int max96755f_bridge_probe(struct platform_device *pdev)
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 {
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 	struct device *dev = &pdev->dev;
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+	struct device_node *np = dev->of_node;
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 	struct max96755f_bridge *ser;
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 	int ret;
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@@ -529,6 +537,8 @@
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 	if (ret)
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 		return dev_err_probe(dev, ret, "failed to request lock IRQ\n");
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+	ser->bridge_dual_link = of_property_read_bool(np, "bridge_dual_link");
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+
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 	ser->bridge.funcs = &max96755f_bridge_funcs;
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 	ser->bridge.of_node = dev->of_node;
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 	ser->bridge.ops = DRM_BRIDGE_OP_DETECT;