Confirmed working. Applied patch on top of next-20260819, panel trained natively:
DPCD 0x2201 ext MAX_LINK_RATE = 0x14 (HBR2, the panel's actual advertised max) live link: rate=540000, num_lanes=4, bw_code=0x14 2880x1800 @ 120Hz, 24bpp, pixel clock 709.633 MHz Thank you for this! Happy to test anything else if it helps. Jesse On Tue, Aug 18, 2026 at 6:39 AM Konrad Dybcio <[email protected]> wrote: > > On 8/8/26 7:13 PM, Jesse Casco wrote: > > Hi Abel, > > > > On an ASUS Zenbook A16 (UX3607OA, Snapdragon X2 Elite Extreme) the internal > > eDP panel never comes up on mainline. It is the link rate: the v8 eDP PHY > > appears to bring up a usable link only at HBR3. > > > > Tested on linux-next next-20260713, next-20260803 and next-20260807, where > > phy-qcom-edp.c is byte-identical -- so not a recent regression, and the May > > 2026 series (eDP low-vdiff LDO config, unified swing/pre-emphasis tables, > > eDP/DP mode switch) is present in the tree tested here. The sweep below is > > from next-20260803; the machine has since run next-20260807 as its daily > > driver, where HBR3 still trains every boot. > > I mentioned in my submission that this series is required on top: > > https://lore.kernel.org/linux-arm-msm/[email protected]/ > > Konrad -- Jesse Casco
