rk3568 rt uboot init

hc

2023-11-06 9df731a176aab8e03b984b681b1bea01ccff6644

 u-boot/drivers/video/drm/analogix_dp.c
..
..
@@ -943,6 +943,37 @@
943
943
 	.detect = analogix_dp_connector_detect,
944
944
 };
945
945
 
946
+static u32 analogix_dp_parse_link_frequencies(struct analogix_dp_device *dp)
947
+{
948
+	struct udevice *dev = dp->dev;
949
+	const struct device_node *endpoint;
950
+	u64 frequency = 0;
951
+
952
+	endpoint = rockchip_of_graph_get_endpoint_by_regs(dev->node, 1, 0);
953
+	if (!endpoint)
954
+		return 0;
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+
956
+	if (of_property_read_u64(endpoint, "link-frequencies", &frequency) < 0)
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+		return 0;
958
+
959
+	if (!frequency)
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+		return 0;
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+
962
+	do_div(frequency, 10 * 1000);	/* symbol rate kbytes */
963
+
964
+	switch (frequency) {
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+	case 162000:
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+	case 270000:
967
+	case 540000:
968
+		break;
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+	default:
970
+		dev_err(dev, "invalid link frequency value: %llu\n", frequency);
971
+		return 0;
972
+	}
973
+
974
+	return frequency;
975
+}
976
+
946
977
 static int analogix_dp_parse_dt(struct analogix_dp_device *dp)
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978
 {
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979
 	struct udevice *dev = dp->dev;
..
..
@@ -956,21 +987,9 @@
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987
 	dp->video_info.force_stream_valid =
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988
 		dev_read_bool(dev, "analogix,force-stream-valid");
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989
 
959
-	max_link_rate = dev_read_u32_default(dev, "max-link-rate", 0);
960
-	if (max_link_rate) {
961
-		switch (max_link_rate) {
962
-		case 1620:
963
-		case 2700:
964
-		case 5400:
965
-			dp->video_info.max_link_rate =
966
-				min_t(u8, dp->video_info.max_link_rate,
967
-				      drm_dp_link_rate_to_bw_code(max_link_rate * 100));
968
-			break;
969
-		default:
970
-			dev_err(dev, "invalid max-link-rate %d\n", max_link_rate);
971
-			break;
972
-		}
973
-	}
990
+	max_link_rate = analogix_dp_parse_link_frequencies(dp);
991
+	if (max_link_rate && max_link_rate < drm_dp_bw_code_to_link_rate(dp->video_info.max_link_rate))
992
+		dp->video_info.max_link_rate = drm_dp_link_rate_to_bw_code(max_link_rate);
974
993
 
975
994
 	if (dev_read_prop(dev, "data-lanes", &len)) {
976
995
 		num_lanes = len / sizeof(u32);
..
..
@@ -1075,8 +1094,9 @@
1075
1094
 	.lcdsel_big = 0 | BIT(21),
1076
1095
 	.lcdsel_lit = BIT(5) | BIT(21),
1077
1096
 	.chip_type = RK3399_EDP,
1097
+	.ssc = true,
1078
1098
 
1079
-	.max_link_rate = DP_LINK_BW_2_7,
1099
+	.max_link_rate = DP_LINK_BW_5_4,
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1100
 	.max_lane_count = 4,
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1101
 };
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1102