From: Matthias Brugger <mbrugger@xxxxxxxx> 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(-) -- 2.23.0
