[PATCH v2 0/2] Enable booting from SPI flash on ROCK Pi 4

[Christopher Obbard]

This series brings up and enables booting from the SPI flash present on
some variants of the ROCK Pi 4 in U-Boot.

The first patch syncs the ROCK Pi 4A devicetree from Linux, which contains
the SPI flash node.

The second patch enables support in U-Boot for the SPI flash chip and
booting U-Boot from the SPI flash on the Radxa ROCK Pi 4.

This series may be found at [0].

[0]: https://gitlab.collabora.com/obbardc/u-boot/-/tree/wip/obbardc/rockchip-rock4-enable-spi-boot-v2

Changes in v2:
- Collect Reviewed-by tags.
- Rebase on top of rockchip/for-next.
- Sync configuration changes with savedefconfig.
- Remove GigaDevice SPI flash chip support (suggested by Kever Y).
- Re-enable CONFIG_SPL_FIT_SIGNATURE=y (fixed in rockchip/for-next, solves
  multiple problems mentioned in v1. Thanks Jonas!).
- Remove spl-boot-order from rk3399-rock-pi-4a-u-boot.dtsi (suggested by
  Jonas K).
- Enable CONFIG_SPI_FLASH_SFDP_SUPPORT=y (suggested by Jonas K).
- v1: https://lists.denx.de/pipermail/u-boot/2024-March/547173.html

Christopher Obbard (2):
  arm: rockchip: sync ROCK Pi 4A DTS from Linux
  rockchip: rock-pi-4-rk3399: enable booting from SPI flash

 arch/arm/dts/rk3399-rock-pi-4a-u-boot.dtsi |  7 +++++++
 arch/arm/dts/rk3399-rock-pi-4a.dts         | 10 ++++++++++
 configs/rock-pi-4-rk3399_defconfig         | 17 ++++++++++++++---
 3 files changed, 31 insertions(+), 3 deletions(-)

-- 
2.43.0