Re: [PATCH v20 0/8] Initial support Cadence MHDP8501(HDMI/DP) for i.MX8MQ

Sandor Yu
2025-01-08T00:31:16Z

>
>
> Hi,
>
> Am Dienstag, 7. Januar 2025, 15:42:56 CET schrieb Sandor Yu:
> > Hi Alexander
> >
> > It may cause by the first preferred mode in EDID is not supported by driver.
> > Please use modetest or other user application to change the video mode to
> CTA standard modes.
> > Such as148.5MHz 1080p60 or 594MHz 3840x2160p60.
>
> No, the EDID does not affect the issue. I resurrected series v14 and HDMI
> does work without any issues at 1920x1080.
> If I can find a time slot maybe I can check which series version regresses.
>

Could you please list the all video modes by modetest when device bootup?

Sandor

> Best regards,
> Alexander
>
> >
> > >
> > > Hi Sandor,
> > >
> > > thanks for the updates.
> > >
> > > Am Dienstag, 17. Dezember 2024, 07:51:42 CET schrieb Sandor Yu:
> > > > The patch set initial support Cadence MHDP8501(HDMI/DP) DRM bridge
> > > > driver and Cadence HDP-TX PHY(HDMI/DP) driver for Freescale
> i.MX8MQ.
> > > >
> > > > The patch set compose of DRM bridge drivers and PHY driver.
> > > >
> > > > Both of them need by patch #1 and #3 to pass build.
> > > >
> > > > DRM bridges driver patches:
> > > > #1: soc: cadence: Create helper functions for Cadence MHDP
> > > > #2: drm: bridge: cadence: Update mhdp8546 mailbox access
> functions
> > > > #3: phy: Add HDMI configuration options
> > > > #4: dt-bindings: display: bridge: Add Cadence MHDP8501
> > > > #5: drm: bridge: Cadence: Add MHDP8501 DP/HDMI driver
> > > >
> > > > PHY driver patches:
> > > > #1: soc: cadence: Create helper functions for Cadence MHDP
> > > > #3: phy: Add HDMI configuration options
> > > > #6: dt-bindings: phy: Add Freescale iMX8MQ DP and HDMI PHY
> > > > #7: phy: freescale: Add DisplayPort/HDMI Combo-PHY driver for
> > > > i.MX8MQ
> > > >
> > > > i.MX8M/TQMa8Mx DT patches:
> > > > #8: Add DT nodes for DCSS/HDMI pipeline
> > > > #9: Enable HDMI for TQMa8Mx/MBa8Mx
> > > >
> > >
> > > I gave this version a new try but unfortunately the display stays black.
> > > Although the display pipeline is intialized and even wayland starts.
> > > Do you have any idea where to start looking?
> > >
> > > Best regards,
> > > Alexander
> > > --
> > > TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
> > > Amtsgericht München, HRB 105018
> > > Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> > >
> http://www/
> > > .tq%2F&data=05%7C02%7Csandor.yu%40nxp.com%7C23ba3321d4d5480
> 4b98f08dd
> > >
> 2f35f3db%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C63871863
> 095591
> > >
> 6087%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIw
> LjAuMDA
> > >
> wMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%
> 7C&s
> > >
> data=4Ip3wEX207cu0EreOtf11F%2BS%2ByNzAcI2C2iPjjlQzVg%3D&reserved=
> 0
> > >
> -group.com%2F&data=05%7C02%7CSandor.yu%40nxp.com%7C734ea27ba98
> > >
> 140b7483e08dd2eed1276%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%
> > >
> 7C0%7C638718317967624410%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU
> > >
> 1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIs
> > >
> IldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=1HdQdbye9p5AHoT7JCF3Md%
> > > 2FB9k9tyN%2FW25YKCEngvWM%3D&reserved=0
> > >
> >
> >
> >
>
>
> --
> TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
> Amtsgericht München, HRB 105018
> Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> http://www.tq/
> -group.com%2F&data=05%7C02%7Csandor.yu%40nxp.com%7C23ba3321d4d
> 54804b98f08dd2f35f3db%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C
> 0%7C638718630955952151%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1h
> cGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIld
> UIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=n3QmrbJru4JcdZvEM%2FxJp4rVf
> Vmifjoxpq0o9Wxzh2Y%3D&reserved=0
>