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Groups > linux.debian.kernel > #68876 > unrolled thread

Bug#977441: linux: Pls. consider CONFIG_DRM_V3D

Started byRyutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp>
First post2020-12-15 07:50 +0100
Last post2020-12-17 05:20 +0100
Articles 5 — 2 participants

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  Bug#977441: linux: Pls. consider CONFIG_DRM_V3D Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-15 07:50 +0100
    Processed: Re: linux: Pls. consider CONFIG_DRM_V3D "Debian Bug Tracking System" <owner@bugs.debian.org> - 2020-12-17 00:50 +0100
    Bug#977441: linux: Pls. consider CONFIG_DRM_V3D Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-17 00:50 +0100
      Bug#977441: linux: Pls. consider CONFIG_DRM_V3D Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-17 05:20 +0100
    Processed: Re: linux: Pls. consider CONFIG_DRM_V3D "Debian Bug Tracking System" <owner@bugs.debian.org> - 2020-12-17 05:20 +0100

#68876 — Bug#977441: linux: Pls. consider CONFIG_DRM_V3D

FromRyutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp>
Date2020-12-15 07:50 +0100
SubjectBug#977441: linux: Pls. consider CONFIG_DRM_V3D
Message-ID<BmcjL-62k-5@gated-at.bofh.it>
Source: linux
Version: 5.9.11-1
Severity: wishlist

Dear Maintainer,

From 5.10, Linux vc4 driver starts supporting Raspberry Pi GPU as
https://www.phoronix.com/scan.php?page=news_item&px=RPi4-Display-Linux-5.10-Coming

From Ubuntu kernel experience, CONFIG_DRM_V3D seems necessary to
fully use its hardware acceleration, as
https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1850876

Could you consider to enable CONFIG_DRM_V3D for arm64 and possibly
for armhf?

Best regards, Ryutaroh Matsumoto

-- System Information:
Debian Release: bullseye/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: arm64 (aarch64)

Kernel: Linux 5.9.0-4-arm64 (SMP w/4 CPU threads)
Kernel taint flags: TAINT_CRAP
Locale: LANG=ja_JP.UTF-8, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

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#68885 — Processed: Re: linux: Pls. consider CONFIG_DRM_V3D

From"Debian Bug Tracking System" <owner@bugs.debian.org>
Date2020-12-17 00:50 +0100
SubjectProcessed: Re: linux: Pls. consider CONFIG_DRM_V3D
Message-ID<BmOIp-3R9-3@gated-at.bofh.it>
In reply to#68876
Processing control commands:

> tags -1 + patch
Bug #977441 [src:linux] Pls. consider CONFIG_DRM_V3D
Added tag(s) patch.

-- 
977441: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=977441
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#68886

FromRyutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp>
Date2020-12-17 00:50 +0100
Message-ID<BmOIp-3R9-5@gated-at.bofh.it>
In reply to#68876
Control: tags -1 + patch

Just adding CONFIG_DRM_V3D=m is not enough,
as reported at
https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1876862/comments/5

The following patch seems necessary, which has been introduced in
the Ubuntu kernel.

change
    linux/drivers/gpu/drm/v3d/kconfig
- depends on ARCH_BCM || ARCH_BCMSTB || COMPILE_TEST
+ depends on ARCH_BCM || ARCH_BCMSTB || ARCH_BCM2835 || COMPILE_TEST

Best regards, Ryutaroh Matsumoto

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#68890

FromRyutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp>
Date2020-12-17 05:20 +0100
Message-ID<BmSVI-6BC-3@gated-at.bofh.it>
In reply to#68886
Control: retitle 968181 GPU/DRM acceleration unavailable on Raspberry Pi

I modprobe'ed v3d.ko on vanilla Linux kernel 5.10.1,
but /dev/dri/render* does not appear like

https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1880125/comments/14
https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1850876/comments/33

Simply compiling and loading v3d do not seem to enable
DRM/GPU acceleration on RPi4... We may need some work for enabling GPU
acceleration on Raspberry Pi series...
Ryutaroh

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#68891 — Processed: Re: linux: Pls. consider CONFIG_DRM_V3D

From"Debian Bug Tracking System" <owner@bugs.debian.org>
Date2020-12-17 05:20 +0100
SubjectProcessed: Re: linux: Pls. consider CONFIG_DRM_V3D
Message-ID<BmSVI-6BC-5@gated-at.bofh.it>
In reply to#68876
Processing control commands:

> retitle 968181 GPU/DRM acceleration unavailable on Raspberry Pi
Bug #968181 [src:linux] linux-image-5.7.0-2-arm64: DRM unavailable on Rapsberry Pi 4B
Changed Bug title to 'GPU/DRM acceleration unavailable on Raspberry Pi' from 'linux-image-5.7.0-2-arm64: DRM unavailable on Rapsberry Pi 4B'.

-- 
968181: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=968181
977441: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=977441
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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