* [PATCH v2 1/3] arm64: dts: qcom: kodiak: allow mode-switch events to reach the QMP Combo PHY
2026-04-29 6:40 [PATCH v2 0/3] arm64: dts: qcom: kodiak: Enable 4-lane DP via QMP Combo PHY Mahadevan P
@ 2026-04-29 6:40 ` Mahadevan P
2026-05-15 10:57 ` Konrad Dybcio
2026-04-29 6:40 ` [PATCH v2 2/3] arm64: dts: qcom: kodiak: move dp data-lanes to SoC dtsi Mahadevan P
` (2 subsequent siblings)
3 siblings, 1 reply; 6+ messages in thread
From: Mahadevan P @ 2026-04-29 6:40 UTC (permalink / raw)
To: Bjorn Andersson, Konrad Dybcio, Rob Herring, Krzysztof Kozlowski,
Conor Dooley, cros-qcom-dts-watchers
Cc: linux-arm-msm, devicetree, linux-kernel, Mahadevan P, Mahadevan P
From: Mahadevan P <mahap@qti.qualcomm.com>
Allow mode-switch events to reach the QMP Combo PHY to support
setting the QMP Combo PHY in DP 4Lanes Altmode.
Signed-off-by: Mahadevan P <mahadevan.p@oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/kodiak.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/qcom/kodiak.dtsi b/arch/arm64/boot/dts/qcom/kodiak.dtsi
index 988ca5f7c8a0..96ac3656ab5a 100644
--- a/arch/arm64/boot/dts/qcom/kodiak.dtsi
+++ b/arch/arm64/boot/dts/qcom/kodiak.dtsi
@@ -4320,6 +4320,7 @@ usb_1_qmpphy: phy@88e8000 {
#clock-cells = <1>;
#phy-cells = <1>;
+ mode-switch;
orientation-switch;
ports {
--
2.34.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH v2 1/3] arm64: dts: qcom: kodiak: allow mode-switch events to reach the QMP Combo PHY
2026-04-29 6:40 ` [PATCH v2 1/3] arm64: dts: qcom: kodiak: allow mode-switch events to reach the " Mahadevan P
@ 2026-05-15 10:57 ` Konrad Dybcio
0 siblings, 0 replies; 6+ messages in thread
From: Konrad Dybcio @ 2026-05-15 10:57 UTC (permalink / raw)
To: Mahadevan P, Bjorn Andersson, Konrad Dybcio, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, cros-qcom-dts-watchers
Cc: linux-arm-msm, devicetree, linux-kernel, Mahadevan P
On 4/29/26 8:40 AM, Mahadevan P wrote:
> From: Mahadevan P <mahap@qti.qualcomm.com>
>
> Allow mode-switch events to reach the QMP Combo PHY to support
> setting the QMP Combo PHY in DP 4Lanes Altmode.
>
> Signed-off-by: Mahadevan P <mahadevan.p@oss.qualcomm.com>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2 2/3] arm64: dts: qcom: kodiak: move dp data-lanes to SoC dtsi
2026-04-29 6:40 [PATCH v2 0/3] arm64: dts: qcom: kodiak: Enable 4-lane DP via QMP Combo PHY Mahadevan P
2026-04-29 6:40 ` [PATCH v2 1/3] arm64: dts: qcom: kodiak: allow mode-switch events to reach the " Mahadevan P
@ 2026-04-29 6:40 ` Mahadevan P
2026-04-29 6:40 ` [PATCH v2 3/3] arm64: dts: qcom: kodiak: Set up 4-lane DP Mahadevan P
2026-05-22 3:41 ` [PATCH v2 0/3] arm64: dts: qcom: kodiak: Enable 4-lane DP via QMP Combo PHY Bjorn Andersson
3 siblings, 0 replies; 6+ messages in thread
From: Mahadevan P @ 2026-04-29 6:40 UTC (permalink / raw)
To: Bjorn Andersson, Konrad Dybcio, Rob Herring, Krzysztof Kozlowski,
Conor Dooley, cros-qcom-dts-watchers
Cc: linux-arm-msm, devicetree, linux-kernel, Mahadevan P, Mahadevan P
From: Mahadevan P <mahap@qti.qualcomm.com>
The connection between the QMP Combo PHY and the DisplayPort controller
is fixed in SoC, so move the data-lanes property to kodiak.dtsi and
drop the per-board overrides.
Also remove the redundant remote-endpoint cross-links and
orientation-switch property from qcs6490-rb3gen2 and
qcs6490-thundercomm-rubikpi3, which are already defined in kodiak.dtsi.
Signed-off-by: Mahadevan P <mahadevan.p@oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/kodiak.dtsi | 1 +
arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts | 4 ----
arch/arm64/boot/dts/qcom/qcm6490-particle-tachyon.dts | 4 ----
arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 11 -----------
arch/arm64/boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts | 1 -
arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts | 3 ---
arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi | 1 -
7 files changed, 1 insertion(+), 24 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/kodiak.dtsi b/arch/arm64/boot/dts/qcom/kodiak.dtsi
index 96ac3656ab5a..0acc6917d7aa 100644
--- a/arch/arm64/boot/dts/qcom/kodiak.dtsi
+++ b/arch/arm64/boot/dts/qcom/kodiak.dtsi
@@ -5704,6 +5704,7 @@ dp_in: endpoint {
port@1 {
reg = <1>;
mdss_dp_out: endpoint {
+ data-lanes = <0 1>;
remote-endpoint = <&usb_dp_qmpphy_dp_in>;
};
};
diff --git a/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts b/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts
index 04cb9230d29f..9fe09968768a 100644
--- a/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts
+++ b/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts
@@ -932,10 +932,6 @@ &mdss_dp {
status = "okay";
};
-&mdss_dp_out {
- data-lanes = <0 1>;
-};
-
&mdss_dsi {
vdda-supply = <&vreg_l6b>;
status = "okay";
diff --git a/arch/arm64/boot/dts/qcom/qcm6490-particle-tachyon.dts b/arch/arm64/boot/dts/qcom/qcm6490-particle-tachyon.dts
index bf18c4852081..5a019501437a 100644
--- a/arch/arm64/boot/dts/qcom/qcm6490-particle-tachyon.dts
+++ b/arch/arm64/boot/dts/qcom/qcm6490-particle-tachyon.dts
@@ -540,10 +540,6 @@ &mdss_dp {
status = "okay";
};
-&mdss_dp_out {
- data-lanes = <0 1>;
-};
-
&pcie0 {
perst-gpios = <&tlmm 87 GPIO_ACTIVE_LOW>;
wake-gpios = <&tlmm 89 GPIO_ACTIVE_HIGH>;
diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
index e393ccf1884a..9f76c95af4bc 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
@@ -788,11 +788,6 @@ &mdss_dp {
status = "okay";
};
-&mdss_dp_out {
- data-lanes = <0 1>;
- remote-endpoint = <&usb_dp_qmpphy_dp_in>;
-};
-
&mdss_dsi {
vdda-supply = <&vreg_l6b_1p2>;
status = "okay";
@@ -1391,8 +1386,6 @@ &usb_1_qmpphy {
vdda-phy-supply = <&vreg_l6b_1p2>;
vdda-pll-supply = <&vreg_l1b_0p912>;
- orientation-switch;
-
status = "okay";
};
@@ -1404,10 +1397,6 @@ &usb_dp_qmpphy_usb_ss_in {
remote-endpoint = <&usb_1_dwc3_ss>;
};
-&usb_dp_qmpphy_dp_in {
- remote-endpoint = <&mdss_dp_out>;
-};
-
&ufs_mem_hc {
reset-gpios = <&tlmm 175 GPIO_ACTIVE_LOW>;
vcc-supply = <&vreg_l7b_2p952>;
diff --git a/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts b/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts
index a5ad796cb65d..a120f7c5cfa5 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts
@@ -662,7 +662,6 @@ &mdss_dp {
};
&mdss_dp_out {
- data-lanes = <0 1>;
link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
};
diff --git a/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts b/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts
index f47efca42d48..d33f8aa38b13 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts
@@ -788,10 +788,7 @@ &mdss_dp {
};
&mdss_dp_out {
- data-lanes = <0 1>;
link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
-
- remote-endpoint = <&usb_dp_qmpphy_dp_in>;
};
&mdss_dsi {
diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
index 5c5e4f1dd221..504c3615f7ac 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
@@ -463,7 +463,6 @@ &mdss_dp {
};
&mdss_dp_out {
- data-lanes = <0 1>;
link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000>;
};
--
2.34.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v2 3/3] arm64: dts: qcom: kodiak: Set up 4-lane DP
2026-04-29 6:40 [PATCH v2 0/3] arm64: dts: qcom: kodiak: Enable 4-lane DP via QMP Combo PHY Mahadevan P
2026-04-29 6:40 ` [PATCH v2 1/3] arm64: dts: qcom: kodiak: allow mode-switch events to reach the " Mahadevan P
2026-04-29 6:40 ` [PATCH v2 2/3] arm64: dts: qcom: kodiak: move dp data-lanes to SoC dtsi Mahadevan P
@ 2026-04-29 6:40 ` Mahadevan P
2026-05-22 3:41 ` [PATCH v2 0/3] arm64: dts: qcom: kodiak: Enable 4-lane DP via QMP Combo PHY Bjorn Andersson
3 siblings, 0 replies; 6+ messages in thread
From: Mahadevan P @ 2026-04-29 6:40 UTC (permalink / raw)
To: Bjorn Andersson, Konrad Dybcio, Rob Herring, Krzysztof Kozlowski,
Conor Dooley, cros-qcom-dts-watchers
Cc: linux-arm-msm, devicetree, linux-kernel, Mahadevan P, Mahadevan P
From: Mahadevan P <mahap@qti.qualcomm.com>
Allow up to 4 lanes for the DisplayPort link from the PHY to the
controller now the mode-switch events can reach the QMP Combo PHY.
Signed-off-by: Mahadevan P <mahadevan.p@oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/kodiak.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/qcom/kodiak.dtsi b/arch/arm64/boot/dts/qcom/kodiak.dtsi
index 0acc6917d7aa..204513a6bd89 100644
--- a/arch/arm64/boot/dts/qcom/kodiak.dtsi
+++ b/arch/arm64/boot/dts/qcom/kodiak.dtsi
@@ -5704,7 +5704,7 @@ dp_in: endpoint {
port@1 {
reg = <1>;
mdss_dp_out: endpoint {
- data-lanes = <0 1>;
+ data-lanes = <0 1 2 3>;
remote-endpoint = <&usb_dp_qmpphy_dp_in>;
};
};
--
2.34.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH v2 0/3] arm64: dts: qcom: kodiak: Enable 4-lane DP via QMP Combo PHY
2026-04-29 6:40 [PATCH v2 0/3] arm64: dts: qcom: kodiak: Enable 4-lane DP via QMP Combo PHY Mahadevan P
` (2 preceding siblings ...)
2026-04-29 6:40 ` [PATCH v2 3/3] arm64: dts: qcom: kodiak: Set up 4-lane DP Mahadevan P
@ 2026-05-22 3:41 ` Bjorn Andersson
3 siblings, 0 replies; 6+ messages in thread
From: Bjorn Andersson @ 2026-05-22 3:41 UTC (permalink / raw)
To: Mahadevan P
Cc: Konrad Dybcio, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
cros-qcom-dts-watchers, linux-arm-msm, devicetree, linux-kernel,
Mahadevan P
On Wed, Apr 29, 2026 at 12:10:39PM +0530, Mahadevan P wrote:
> This series enables full 4-lane DisplayPort operation on SC7280/kodiak
> platforms by wiring up the QMP Combo PHY correctly and consolidating
> the DP endpoint configuration in the SoC dtsi.
>
> Patch 1 adds mode-switch to the QMP Combo PHY node in kodiak.dtsi,
> which is required for the PHY to respond to USB-C Alternate Mode
> negotiation and switch into 4-lane DP configuration.
>
> Patch 2 moves the data-lanes property from individual board files into
> kodiak.dtsi since the PHY-to-controller wiring is fixed in silicon.
> It also removes redundant remote-endpoint and orientation-switch
> overrides from qcs6490-rb3gen2 and qcs6490-thundercomm-rubikpi3 that
> are already covered by the SoC dtsi.
>
> Patch 3 updates data-lanes from <0 1> to <0 1 2 3> in kodiak.dtsi now
> that mode-switch is in place, enabling the full 4-lane DP link.
Are you sure that herobrine has 4 lanes routed on the PCB?
Regards,
Bjorn
>
> Signed-off-by: Mahadevan P <mahadevan.p@oss.qualcomm.com>
> ---
> Changes in v2:
> - Split single patch into 3 patches.
> - Move mode-switch and data-lanes to kodiak.dtsi instead of board
> file (Neil Armstrong, Konrad Dybcio)
> - Remove redundant board-level endpoint and orientation-switch
> overrides now covered by kodiak.dtsi
> - v1 received a Reviewed-by from Dmitry on the combined change;
> that tag has been dropped pending re-review of the split.
>
> ---
> Mahadevan P (3):
> arm64: dts: qcom: kodiak: allow mode-switch events to reach the QMP Combo PHY
> arm64: dts: qcom: kodiak: move dp data-lanes to SoC dtsi
> arm64: dts: qcom: kodiak: Set up 4-lane DP
>
> arch/arm64/boot/dts/qcom/kodiak.dtsi | 2 ++
> arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts | 4 ----
> arch/arm64/boot/dts/qcom/qcm6490-particle-tachyon.dts | 4 ----
> arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 11 -----------
> arch/arm64/boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts | 1 -
> arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts | 3 ---
> arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi | 1 -
> 7 files changed, 2 insertions(+), 24 deletions(-)
> ---
> base-commit: 452c3b1ea875276105ac90ba474f72b4cd9b77a2
> change-id: 20260420-kodiak_v2-d7a06d50db5e
>
> Best regards,
> --
> Mahadevan P <mahadevan.p@oss.qualcomm.com>
>
^ permalink raw reply [flat|nested] 6+ messages in thread