[PATCH v2 4/4] arm64: dts: qcom: Use DP AltMode defines

Sebastian Reichel sre at kernel.org
Sat Oct 17 12:59:33 PDT 2026


From: Sebastian Reichel <sebastian.reichel at collabora.com>

Use the new USB-C DP AltMode defines for the SVID and the capabilities
VDO to make the DTs more readable.

Reviewed-by: Konrad Dybcio <konrad.dybcio at oss.qualcomm.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel at collabora.com>
---
 arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 8 ++++++--
 arch/arm64/boot/dts/qcom/sm8150-hdk.dts  | 9 +++++++--
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
index d6af679abe1a..d21b94e872ce 100644
--- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
+++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
@@ -1508,8 +1508,12 @@ PDO_FIXED_USB_COMM |
 
 		altmodes {
 			displayport {
-				svid = /bits/ 16 <0xff01>;
-				vdo = <0x00001c46>;
+				svid = /bits/ 16 <USB_SVID_DP_ALTMODE>;
+				vdo = <VDO_DP(DP_CAP_DPAM_V2_0, DP_CAP_CABLE_TYPE_PASSIVE,
+					      DP_CAP_UHBR_13_5_UNSUPPORTED,
+					      DP_PIN_UFP_NONE, DP_PIN_DFP_C_D_E,
+					      DP_CAP_USB2_USED, DP_CAP_RECEPTACLE,
+					      DP_CAP_SIGNALLING_HBR3, DP_CAP_DFP_D)>;
 			};
 		};
 
diff --git a/arch/arm64/boot/dts/qcom/sm8150-hdk.dts b/arch/arm64/boot/dts/qcom/sm8150-hdk.dts
index cdced5c848d3..3d83dd305954 100644
--- a/arch/arm64/boot/dts/qcom/sm8150-hdk.dts
+++ b/arch/arm64/boot/dts/qcom/sm8150-hdk.dts
@@ -581,8 +581,13 @@ PDO_FIXED_USB_COMM |
 
 		altmodes {
 			displayport {
-				svid = /bits/ 16 <0xff01>;
-				vdo = <0x00001c46>;
+				svid = /bits/ 16 <USB_SVID_DP_ALTMODE>;
+				vdo = <VDO_DP(DP_CAP_DPAM_V2_0, DP_CAP_CABLE_TYPE_PASSIVE,
+					      DP_CAP_UHBR_13_5_UNSUPPORTED,
+					      DP_PIN_UFP_NONE, DP_PIN_DFP_C_D_E,
+					      DP_CAP_USB2_USED, DP_CAP_RECEPTACLE,
+					      DP_CAP_SIGNALLING_HBR3, DP_CAP_DFP_D)>;
+
 			};
 		};
 

-- 
2.53.0




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