Hi Tim On Tue, Oct 5, 2021 at 11:43 PM Tim Harvey <thar...@gateworks.com> wrote: > > On Sun, Jul 25, 2021 at 10:14 AM Jagan Teki <ja...@amarulasolutions.com> > wrote: > > > > Hi Sam, > > > > On Sun, Jul 25, 2021 at 10:35 PM Sam Ravnborg <s...@ravnborg.org> wrote: > > > > > > Hi Jagan, > > > > > > On Sun, Jul 04, 2021 at 02:32:13PM +0530, Jagan Teki wrote: > > > > This series supports common bridge support for Samsung MIPI DSIM > > > > which is used in Exynos and i.MX8MM SoC's. > > > > > > > > The final bridge supports both the Exynos and i.MX8MM DSI devices. > > > > > > > > Right now bridge offers two sets of implementations. > > > > > > > > A. With component_ops and exynos specific code exclusively for > > > > exynos dsi drivers and it's legacy bindings. > > > > > > > > B. Without componenet_ops for newly implemented bridges and its > > > > users like i.MX8MM. > > > > > > > > The future plan is to fix the implementation A) by dropping > > > > component_ops and fixing exynos specific code in order to make > > > > the bridge more mature to use and the same is mentioned in > > > > drivers TODO. > > > > > > > > Patch 0001 - 0006: Bridge conversion > > > > Patch 0007 - 0017: Samsung MIPI DSIM bridge fixes, additions > > > > > > > > Tested in Engicam i.Core MX8M Mini SoM. > > > > > > > > Anyone interest, please have a look on this repo > > > > https://github.com/openedev/linux/tree/070421-imx8mm-dsim > > > > > > > > Would appreciate anyone from the exynos team to test it on > > > > the exynos platform? > > > > > > > > Any inputs? > > > > > > I really like where you are headign with this! > > > No testing - sorry. But I will try to provide a bit of feedback on the > > > individual patches. > > > > > > I hope you find a way to move forward with this. > > > > Thanks for the response. > > > > We have found some issues with Bridge conversion on existing exynos > > drivers. The component based DSI drivers(like exynos) are difficult to > > attach if it involves kms hotplug. kms hotplug would require drm > > pointer and that pointer would only available after the bind call > > finishes. But the bridge attach in bind call will defer till it find > > the attached bridge. > > > > Right now I'm trying to find the proper way to attach the bridges for > > component based DSI drivers which involves kms hot-plug. > > > > If you have any ideas on this, please let me know. > > > > Jagan, > > How is your progress on this series? Looking at your repo it looks > like you've rebased on top of 5.13-rc3 in your 070121-imx8mm-dsim > branch but you've got a lot of things there that are likely not > related to this series?
I have a bit of work on those patches and tested on imx8mn. Basically: - add the dsi timing calculation - change few difference with samsung bridge - fix crashes of my dsi panels - compare with NXP driver the final results I found that I have one problem that gives me some instability. In the NXP original driver the panel needs to be enabled in bridge_enable before out the standby. If I understand correctly, our standby should be done after. I would like to have some feedback and help and testing on other boards/devices and some suggestions on how to handle some of the differences. Another big problem is etnavi that is not stable Michael > > Best regards, > > Tim > > -- Michael Nazzareno Trimarchi Co-Founder & Chief Executive Officer M. +39 347 913 2170 mich...@amarulasolutions.com __________________________________ Amarula Solutions BV Joop Geesinkweg 125, 1114 AB, Amsterdam, NL T. +31 (0)85 111 9172 i...@amarulasolutions.com www.amarulasolutions.com
