Re: [PATCH v2 0/2] Add support for bcm2711 in vchiq_arm

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Hi Adrien,

Am 24.03.22 um 18:26 schrieb Adrien Thierry:
The goal of this patch series is to use the bcm2711 compatible string in
vchiq_arm for the Raspberry Pi 4.

there was already a patch series to enable VCHIQ on BCM2711, which wasn't accepted:

https://lore.kernel.org/linux-arm-kernel/20211014223230.451659-1-mguma@xxxxxxxxxx/T/

Could you please explain your approach, especially leaving out 36 bit DMA support?

  This allows using the downstream device
tree with the upstream kernel.

This is a really bad idea and caused a lot of trouble in the past. A lot of the issues in the Fedora or Arch Linux forums or mailing lists results from this idea. It wastes the time of the kernel developer since these DT files has never been reviewed by the devicetree maintainers.

Best regards


---
Changes since v1:
- Removed duplicate compatible string for bcm2711 in
   brcm,bcm2835-vchiq.yaml

Adrien Thierry (2):
   dt-bindings: soc: bcm: bcm2835-vchiq: Add support for bcm2711
   staging: vchiq_arm: Use bcm2711 compatible string for bcm2711-based
     RPi

  .../devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.yaml      | 5 +++++
  arch/arm/boot/dts/bcm2711-rpi.dtsi                           | 1 +
  .../staging/vc04_services/interface/vchiq_arm/vchiq_arm.c    | 5 +++++
  3 files changed, 11 insertions(+)


base-commit: ed4643521e6af8ab8ed1e467630a85884d2696cf




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