[PATCH v3 0/3] Ethernet support for Raspberry Pi 4

[LABBE Corentin]

On Mon, Jan 27, 2020 at 01:14:41AM +0000, Andre Przywara wrote:
> This series adds Ethernet support for the Raspberry Pi 4. The SoC
> includes a "Broadcom Genet v5 MAC" IP, connected as a proper platform
> device (no USB anymore!). Patch 1 provides a driver for that. There does
> not seem to be publicly available documentation, so this is based on the
> Linux driver, but stripped down to just provide what U-Boot needs.
> Patch 2 fixes up the RPi4 memory map to accommodate the MMIO area the
> MAC lives in, while patch 3 enables it in the respective defconfigs.
> 
> This version fixes the nasty SError issue that showed when booting Linux.
> To see the changes as patches, refer to [1].
> 
> Please have a look and test it, I hope this helps to simplify
> development, as you spare the SD card and its slot from heavy swapping.
> 
> Cheers,
> Andre.
> 
> [1] https://github.com/apritzel/u-boot/commits/rpi4-eth-v3
> 
> Changelog v2 ... v3:
> - properly reset MAC in eth_probe() to avoid SError in Linux
> - disable RX DMA upon stopping the device
> 
> Changelog v1 ... v2:
> - use native endianess functions when accessing MMIO registers
> - use dev_* DM wrappers for accessing devicetree data
> - round base and length for flush_dcache_range, plus a comment
> - check and round length for invalidate_cache_range
> - support RGMII_RXID PHY mode, to support mainline .dtb
> 
> Amit Singh Tomar (3):
>   net: Add support for Broadcom GENETv5 Ethernet controller
>   rpi4: Update memory map to accommodate scb devices
>   rpi4: Enable GENET Ethernet controller
> 
>  arch/arm/mach-bcm283x/init.c |   6 +-
>  configs/rpi_4_32b_defconfig  |   2 +
>  configs/rpi_4_defconfig      |   2 +
>  configs/rpi_arm64_defconfig  |   1 +
>  drivers/net/Kconfig          |   7 +
>  drivers/net/Makefile         |   1 +
>  drivers/net/bcmgenet.c       | 729 +++++++++++++++++++++++++++++++++++++++++++
>  7 files changed, 745 insertions(+), 3 deletions(-)
>  create mode 100644 drivers/net/bcmgenet.c
> 
> -- 

Hello

I have successfully started a kernel (5.5.0-rc7-next-20200124-00075-gd1ea5e663326) with this serie.
Thanks for your help by IRC, updating firmware seems to did the trick.
The kernel panic just after with "OF: reserved mem: failed to allocate memory for node 'linux,cma'" but that's another story.

Tested-by: Corentin Labbe <clabbe at baylibre.com>
Thanks