| Message ID | 20210326121955.1266230-1-adrien.grassein@gmail.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Add support of Lontium lt8912 MIPI to HDMI bridge | expand |
Pushed: https://cgit.freedesktop.org/drm/drm-misc/commit/?id=3aa6031deefa9a2c056af2182af02d3dc5df1067 On Fri, 26 Mar 2021 at 13:20, Adrien Grassein <adrien.grassein@gmail.com> wrote: > > Hi, > this patch set adds the support of the Lontium lt8912 MIPI to HDMI > bridge in the kernel. > > It's only support the video part, not the audio part yet > since I don't have the datasheet of this component. > I get the current i2c configuration from Digi and > Boundary drivers. > Developed using the DB_DSIHD board from BoundaryDevices. > > Update in v2 > - Use standard data-lanes instead of a custom prop; > - Use hdmi-connector node. > > Update in v3 > - Fix indentation; > - Implement missing bridge functions; > - Add some comments. > > Update in v4 > - Fix bridge ops; > - Fix i2c error detection. > > Update in v5 > - Fix lt8912 name (lt8912b instead of lt8912); > - Implement HPD via a workaround. In fact I don't have the datasheet > of this component yet so I can't say if the configuration of the > registers is correct or if I have an HW issue on my board. So, I choose > to implement a fake version of HPD using a workqueue and polling the > status regularly. > > Update in v6 > - Fix a warning found by "kernel test robot" > > Update in v7 > - Fix HPD logic (via an HW emulation); > - HPD from chip is still not working. > > Update in v8 > - Remove HPD logic (will be added later when HW bug qill be fixed). > > Update in v9 > - Fix errors found in scripts/checkpatch.pl --strict > > Thanks, > > Adrien Grassein (2): > dt-bindings: display: bridge: Add documentation for LT8912B > drm/bridge: Introduce LT8912B DSI to HDMI bridge > > .../display/bridge/lontium,lt8912b.yaml | 102 +++ > MAINTAINERS | 6 + > drivers/gpu/drm/bridge/Kconfig | 14 + > drivers/gpu/drm/bridge/Makefile | 1 + > drivers/gpu/drm/bridge/lontium-lt8912b.c | 765 ++++++++++++++++++ > 5 files changed, 888 insertions(+) > create mode 100644 Documentation/devicetree/bindings/display/bridge/lontium,lt8912b.yaml > create mode 100644 drivers/gpu/drm/bridge/lontium-lt8912b.c > > -- > 2.25.1 >
Hi, this patch set adds the support of the Lontium lt8912 MIPI to HDMI bridge in the kernel. It's only support the video part, not the audio part yet since I don't have the datasheet of this component. I get the current i2c configuration from Digi and Boundary drivers. Developed using the DB_DSIHD board from BoundaryDevices. Update in v2 - Use standard data-lanes instead of a custom prop; - Use hdmi-connector node. Update in v3 - Fix indentation; - Implement missing bridge functions; - Add some comments. Update in v4 - Fix bridge ops; - Fix i2c error detection. Update in v5 - Fix lt8912 name (lt8912b instead of lt8912); - Implement HPD via a workaround. In fact I don't have the datasheet of this component yet so I can't say if the configuration of the registers is correct or if I have an HW issue on my board. So, I choose to implement a fake version of HPD using a workqueue and polling the status regularly. Update in v6 - Fix a warning found by "kernel test robot" Update in v7 - Fix HPD logic (via an HW emulation); - HPD from chip is still not working. Update in v8 - Remove HPD logic (will be added later when HW bug qill be fixed). Update in v9 - Fix errors found in scripts/checkpatch.pl --strict Thanks, Adrien Grassein (2): dt-bindings: display: bridge: Add documentation for LT8912B drm/bridge: Introduce LT8912B DSI to HDMI bridge .../display/bridge/lontium,lt8912b.yaml | 102 +++ MAINTAINERS | 6 + drivers/gpu/drm/bridge/Kconfig | 14 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/lontium-lt8912b.c | 765 ++++++++++++++++++ 5 files changed, 888 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/bridge/lontium,lt8912b.yaml create mode 100644 drivers/gpu/drm/bridge/lontium-lt8912b.c