mbox series

[v1,0/3] This series adds ethernet support for RPi4.

Message ID 20191011184822.866-1-matthias.bgg@kernel.org (mailing list archive)
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Series This series adds ethernet support for RPi4. | expand

Message

Matthias Brugger Oct. 11, 2019, 6:48 p.m. UTC 
From: Matthias Brugger <mbrugger@suse.com>

Raspberry Pi 4 uses the broadcom genet chip in version five.
This chip has a dma controller integrated. Up to now the maximal
burst size was hard-coded to 0x10. But it turns out that Raspberry Pi 4
does only work with the smaller maximal burst size of 0x8.

This series adds a new optional property to the driver, dma-burst-sz.
The very same property is already used by another drivers in the kernel.


Matthias Brugger (3):
  dt-bindings: net: bcmgenet add property for max DMA burst size
  net: bcmgenet: use optional max DMA burst size property
  ARM: dts: bcm2711: Enable GENET support for the RPi4

 .../devicetree/bindings/net/brcm,bcmgenet.txt |  2 ++
 arch/arm/boot/dts/bcm2711-rpi-4-b.dts         | 22 +++++++++++++++++++
 arch/arm/boot/dts/bcm2711.dtsi                | 18 +++++++++++++++
 .../net/ethernet/broadcom/genet/bcmgenet.c    | 13 +++++++++--
 .../net/ethernet/broadcom/genet/bcmgenet.h    |  1 +
 5 files changed, 54 insertions(+), 2 deletions(-)