Module: Mesa Branch: main Commit: b509446c2c97b1e923e7cdffd745bd956ce1f5fd URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=b509446c2c97b1e923e7cdffd745bd956ce1f5fd
Author: Alejandro Piñeiro <apinhe...@igalia.com> Date: Tue Oct 31 23:36:48 2023 +0100 docs/v3d: update v3d documentation In order to include a reference to the Raspberry Pi 5, and that the support for 3.3 and 4.1 got dropped. Acked-by: Emma Anholt <e...@anholt.net> Reviewed-by: Iago Toral Quiroga <ito...@igalia.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25851> --- docs/drivers/v3d.rst | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/docs/drivers/v3d.rst b/docs/drivers/v3d.rst index d8b3929563d..23ee8a1e827 100644 --- a/docs/drivers/v3d.rst +++ b/docs/drivers/v3d.rst @@ -5,22 +5,25 @@ Mesa's V3D graphics driver stack includes a `conformant GLES3.1 driver <https://www.khronos.org/conformance/adopters/conformant-products/opengles#submission_882>`__ called V3D and a Vulkan graphics driver called V3DV, notably -used on the Raspberry Pi 4. +used on the Raspberry Pi 4 and Raspberry Pi 5. The V3D Mesa drivers communicate directly with the `V3D <https://www.kernel.org/doc/html/latest/gpu/v3d.html>`__ kernel DRM driver for scheduling GPU commands. Additionally, on the Raspberry Pi -4, the kernel uses the VC4 DRM driver for display support, so Mesa +4 and 5, the kernel uses the VC4 DRM driver for display support, so Mesa exposes a ``vc4_dri.so`` using the kmsro helpers to do behind-the-scenes buffer management between the two kernel drivers, while executing rendering on the V3D kernel module. Initial development work was done on the Broadcom 7268 (V3D 3.3) and -7278 (V3D 4.1). Development since then has been on V3D 4.2, and -though the 3.3 and 4.1 support continues to remain in tree, it is not -tested any more. Broadcom's reference software platforms do not make -use of the open source V3D stack, but porting a particular hardware -implementation to use it would still be possible. +7278 (V3D 4.1). Development since then has been on V3D 4.2 (Raspberry +Pi 4), and V3D 7.1 (Raspberry Pi 5). When the support for V3D 7.1 +landed, the support for 3.3 and 4.1 was dropped as it was not tested +anymore (see `MR#25851 +<https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25851>`__) +Broadcom's reference software platforms do not make use of the open +source V3D stack, but porting a particular hardware implementation to +use it would still be possible. Hardware Documentation ----------------------
