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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: Fg5A21xyHRFdFFErt2xCOcCkKawdXPHZ X-Authority-Analysis: v=2.4 cv=fozsol4f c=1 sm=1 tr=0 ts=69e8bf90 cx=c_pps a=mDZGXZTwRPZaeRUbqKGCBw==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=fCkYvREgeGE0EZizEysA:9 a=QEXdDO2ut3YA:10 a=zc0IvFSfCIW2DFIPzwfm:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDIyMDEyMCBTYWx0ZWRfXzdOyPO/BrjaC cMhWNFHFgXVoj8xmYRfhQNLXwgFkWPF+W8x9BHVQeoXzUiEkZWi/iNKEcbj35UF5mOQmla+t7Ym QDLRd2m9sMfnJEFThSunOyWVZlHt9KzlBSspU5wXFaAvJTlqTimnoFNZso0B9MVYuJrL+G8qZgK R85TEdNYOYqwc7lpec1tmTPNocAF3QiOOsQEgdIpBB4X8gbyaKULkVEboeYOkeHzGvVdcCBky+S rvuiyoUF5EasXJmE0e3nFmdKfBzDsb01VrkuZucGEqx3UJrCo/Altv1p2dxn72/mJNYzFtjFdSc Stb36iCLn0IhOanlcKus3VtVvIk5xYIl9wgAgdO0sytl1YrXrQX6/acr6VRQ8NzNzrgC2pAQOCP BYBUCZgCe3jRitJTmKbl19NeHo5g1nZQtobsC2Pbf2kdbX1SZDnjhA1PqRxUOVb7ok49duEPtL9 4GnOydRORCX/A7yzFEA== X-Proofpoint-GUID: Fg5A21xyHRFdFFErt2xCOcCkKawdXPHZ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-22_01,2026-04-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 clxscore=1015 adultscore=0 impostorscore=0 spamscore=0 priorityscore=1501 suspectscore=0 phishscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2604220120 On 4/22/2026 4:19 PM, Konrad Dybcio wrote: > On 4/20/26 12:00 PM, Mahadevan P wrote: >> Add the mode-switch property to the QMP combo PHY so that mode-switch >> events are routed to it, allowing the PHY to enter DisplayPort Alternate >> Mode. Expand the DP data-lanes assignment from two to four lanes to make >> use of the full link bandwidth available in this configuration. >> >> Signed-off-by: Mahadevan P >> --- >> arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 3 ++- >> 1 file changed, 2 insertions(+), 1 deletion(-) >> >> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts >> index e393ccf1884a..0c180e49816f 100644 >> --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts >> +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts >> @@ -789,7 +789,7 @@ &mdss_dp { >> }; >> >> &mdss_dp_out { >> - data-lanes = <0 1>; >> + data-lanes = <0 1 2 3>; >> remote-endpoint = <&usb_dp_qmpphy_dp_in>; > > There was an issue with this on a similar kodiak-iot board: > > https://lore.kernel.org/linux-arm-msm/zjmf27y5i6ypba3nvsxxceuxn6yogp46lmtrjua37qa4ibrleq@4qv5s2wirgdh/ > > Have you confirmed (through debugfs) that 4 lanes are in use when > running this on r3g2? > yes root@rb3gen2-core-kit:/sys/kernel/debug/dri/0/DP-1# cat dp_debug name = msm_dp drm_dp_link rate = 540000 num_lanes = 4 capabilities = 1 dp_panel_info: active = 3840x2160 back_porch = 80x54 front_porch = 48x3 sync_width = 32x5 active_low = 0x0 h_skew = 0 refresh rate = 60 pixel clock khz = 533250 bpp = 30 dp_link: test_requested = 128 num_lanes = 4 bw_code = 20 lclk = 540000000 v_level = 2 p_level = 0 > >> }; >> >> @@ -1391,6 +1391,7 @@ &usb_1_qmpphy { >> vdda-phy-supply = <&vreg_l6b_1p2>; >> vdda-pll-supply = <&vreg_l1b_0p912>; >> >> + mode-switch; > > This should be moved to kodiak.dtsi sure > > Konrad