Re: glymur eDP PHY (v8): link trains only at HBR3, all lower rates fail
Konrad Dybcio <[email protected]>
| Newsgroups | org.infradead.lists.linux-phy,org.freedesktop.lists.dri-devel,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
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 -- linux-phy mailing list [email protected] https://lists.infradead.org/mailman/listinfo/linux-phy