E81-107: eDP to LVDS Bridge

The Qualcomm (e)DP driver does not support bridges. Hence this is not really a bridge driver, that means there are no attach- or enable-functions. Instead the bridge is configured when the device is probed. After this it adds itself to the list of panel drivers to be found as a remote-endpoint and optionaly pulls a hotplug-detect-gpio to high to fake to the (e)DP driver a native (e)DP has been powered on.

requested review from @tobias.kahlki, @Karampeazis, @oleksii.kutuzov, and @yuri.mazzuoli

assigned to @dietmar.muscholik

changed target branch from seco_v6.6_QLI.1.3-Ver.1.1 to seco_v6.6_QLI.1.3-Ver.1.1_E81-dev

changed title from [DRIVER] Add driver for NXP PTN3460 DP/LVDS bridge on Qualcomm SoCs to E81: eDP to LVDS Bridge

added 15 commits

• 6c58d071...0a55b3f0 - 8 commits from branch seco_v6.6_QLI.1.3-Ver.1.1_E81-dev
• 7b87c878 - [NONFUNC] Correct documentation of stm32 driver
• d01615ca - [DRIVER] Add driver for NXP PTN3460 DP/LVDS bridge on Qualcomm SoCs
• 3e094be6 - [E81][CONFIG] Add driver for NXP PTN3460 DP/LVDS bridge on Qualcomm SoCs
• 94a8164f - [E81][DTB] Add device node for NXP PTN3460 DP/LVDS bridge on Qualcomm SoCs
• 7dd28b37 - [E81][DTB] Move common display configuration to SoMs dtsi file
• 7f1184a9 - [E81][DTB] Add dtsi files for 7" and 10.1" LVDS displays
• d0bbd9d7 - [E81][B79][DTB] Add device trees for E81 on B79 with LVDS displays

Compare with previous version

changed title from E81: eDP to LVDS Bridge to E81-107: eDP to LVDS Bridge

@dietmar.muscholik Thanks a lot for the MR. I know that this works well with the hardware patch. However, I still feel the need to route a GPIO from the SoC back to the SoC is a bit dirty. Could you please check one more time, if there is no way of doing the hotplug event in software? E.g. defer the probing of the DP driver until the bridge driver is finished? Or work with a blocking notifier from the bridge driver to the DP driver to trigger the hotplug event?

Having a software solution would us also allow to use the bridge in a more sane way, if Qualcomm decides to add bridge support in a future BSP version.

Maybe I can modify the qcom driver to defer probing until the bridge is initialized. And maybe I can tinker something that works with the bridge as well as with native eDP-displays. But this may take some time.

added 4 commits

• fdfe44b7 - [E81][DTB] Add ports to mdss_edp0 and edp2lvds to define dependance
• 5deebab5 - [DRIVER] Update documentation of ptn3460 driver
• ffa7bc28 - [DRIVER] Add PTN3450 driver as a panel driver
• 943d7227 - [DRIVER] Rename documentation of ptn3460 driver

Compare with previous version

Could you add the rest of the dts files as well? (for QCS5430 FP1 and QCS5430 FP2)

changed the description

added 15 commits

• 943d7227...ee368460 - 4 commits from branch seco_v6.6_QLI.1.3-Ver.1.1
• 3556c209 - 1 earlier commit
• 32a540ea - [DRIVER] Add driver for NXP PTN3460 DP/LVDS bridge on Qualcomm SoCs
• bc4b9ec3 - [E81][CONFIG] Add driver for NXP PTN3460 DP/LVDS bridge on Qualcomm SoCs
• dcee609f - [E81][DTB] Add device node for NXP PTN3460 DP/LVDS bridge on Qualcomm SoCs
• 5da67877 - [E81][DTB] Move common display configuration to SoMs dtsi file
• 61e91143 - [E81][DTB] Add dtsi files for 7" and 10.1" LVDS displays
• 7f5fc833 - [E81][B79][DTB] Add device trees for E81 on B79 with LVDS displays
• fe516904 - [E81][DTB] Add ports to mdss_edp0 and edp2lvds to define dependance
• 60349b53 - [DRIVER] Update documentation of ptn3460 driver
• 44f56702 - [DRIVER] Add PTN3450 driver as a panel driver
• 768d398e - [DRIVER] Rename documentation of ptn3460 driver

Compare with previous version

approved this merge request

added 12 commits

• b82b5f04 - 1 commit from branch seco_v6.6_QLI.1.3-Ver.1.1
• c8117053 - 1 earlier commit
• 82ad20b4 - [DRIVER] Add driver for NXP PTN3460 DP/LVDS bridge on Qualcomm SoCs
• 527ccaab - [E81][CONFIG] Add driver for NXP PTN3460 DP/LVDS bridge on Qualcomm SoCs
• a9d6701f - [E81][DTB] Add device node for NXP PTN3460 DP/LVDS bridge on Qualcomm SoCs
• 83c24580 - [E81][DTB] Move common display configuration to SoMs dtsi file
• 877647b4 - [E81][DTB] Add dtsi files for 7" and 10.1" LVDS displays
• 4b97af2f - [E81][B79][DTB] Add device trees for E81 on B79 with LVDS displays
• d4431499 - [E81][DTB] Add ports to mdss_edp0 and edp2lvds to define dependance
• 76ec6ced - [DRIVER] Update documentation of ptn3460 driver
• aa3b5abc - [DRIVER] Add PTN3450 driver as a panel driver
• b2b9aae4 - [DRIVER] Rename documentation of ptn3460 driver

Compare with previous version

added 1 commit

• d16bf12f - [E81][DTB] Add LVDS DTBs to Makefile

Compare with previous version

reset approvals from @tobias.kahlki by pushing to the branch

added 2 commits

• 0bdb9911 - [E81][DTB] Add LVDS DTB variants for QCS5430 FP1/FP2
• 081f6d17 - [E81][DTB] Fix display name in LVDS G101EAN02 DTB

Compare with previous version

added 2 commits

• c5846641 - [E81][DTB] Add LVDS DTB variants for QCS5430 FP1/FP2
• 1dcecf42 - [E81][DTB] Fix display name in LVDS G101EAN02 DTB

Compare with previous version

approved this merge request

added 1 commit

• 64ea684f - [E81][DTB] Add comment regarding pixelclock to FN070PGRGU

Compare with previous version

resolved all threads

reset approvals from @tobias.kahlki by pushing to the branch

approved this merge request

merged