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. Additionally the patch series has some IRQ retrieval improvements and adds support for a missing PHY mode. This series based on Matthias Brugger's V1 series [1]. [1] - https://patchwork.kernel.org/cover/11186193/ Changes in V5: - address Doug's comment Changes in V4: - rebased on current net-next - remove RGMII_ID support - remove fixes tag from patch 1 - add Florian's suggestions to patch 5 Changes in V3: - introduce SoC-specific compatibles for GENET (incl. dt-binding) - use platform_get_irq_optional for optional IRQ - remove Fixes tag from IRQ error handling change - move most of MDIO stuff to bcm2711.dtsi Changes in V2: - add 2 fixes for IRQ retrieval - add support for missing PHY modes - declare PHY mode RGMII RXID based on the default settings - add alias to allow firmware append the MAC address Stefan Wahren (7): net: bcmgenet: Avoid touching non-existent interrupt net: bcmgenet: Fix error handling on IRQ retrieval dt-bindings: net: bcmgenet: Add BCM2711 support net: bcmgenet: Add BCM2711 support net: bcmgenet: Refactor register access in bcmgenet_mii_config net: bcmgenet: Add RGMII_RXID support ARM: dts: bcm2711-rpi-4: Enable GENET support .../devicetree/bindings/net/brcm,bcmgenet.txt | 2 +- arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 17 +++++ arch/arm/boot/dts/bcm2711.dtsi | 26 ++++++++ drivers/net/ethernet/broadcom/genet/bcmgenet.c | 74 ++++++++++++++++++---- drivers/net/ethernet/broadcom/genet/bcmgenet.h | 1 + drivers/net/ethernet/broadcom/genet/bcmmii.c | 47 +++++++------- 6 files changed, 130 insertions(+), 37 deletions(-) -- 2.7.4
