I have recently started testing booting U-Boot from SPI on my gru-kevin (as opposed to chainloading it from vendor coreboot + depthcharge) and brought it to a better working state based on an initial support patch from Marty [1][2] and some follow-up work by Simon [3].
I tried to keep them as the git author when I took things from their work, but squashing other changes into those and rewriting commit messages makes things a bit weird in my opinion, especially for keeping their signoff. Do tell me if there is a better way to that.
As the Kevin and Bob boards are very similar, I assumed the config and devicetree changes will be appropriate for Bob as well, and applied them to it first. I do not have a Bob, so could not test on one myself, but Simon did test an earlier version of this and it appears to work [4].
Other useful things for these boards: - Patch to fix a hang when usb controllers exit [5] (or [6]) - Series to support HS400ES mode as HS400 training fails [7] (but faster speeds are kept disabled in this series since v3) - Hack to skip eMMC reinitialization so it keeps working [8]
[1] https://patchwork.ozlabs.org/patch/1053386/ [2] https://patchwork.ozlabs.org/comment/2488899/ [3] https://github.com/sjg20/u-boot/commits/kevin [4] https://patchwork.ozlabs.org/comment/2799106/ [5] https://patchwork.ozlabs.org/project/uboot/patch/20210406151059.1187379-1-ic... [6] https://patchwork.ozlabs.org/project/uboot/patch/20211224130549.20276-1-alpe... [7] https://patchwork.ozlabs.org/project/uboot/list/?series=269768 [8] https://patchwork.ozlabs.org/comment/2779784/
Changes in v3: - Unset configs MMC_IO_VOLTAGE, MMC_UHS_SUPPORT, MMC_HS400_SUPPORT, MMC_HS400_ES_SUPPORT, MMC_SDHCI_SDMA. - Add tag: "Reviewed-by: Kever Yang kever.yang@rock-chips.com"
v2: https://patchwork.ozlabs.org/project/uboot/list/?series=276629
Changes in v2: - Drop unnecessary ifdef. - Clarify commit message regarding 'values set in coreboot'. - Rebase on u-boot/next, fixing conflict in board_debug_uart_init()
v1: https://patchwork.ozlabs.org/project/uboot/list/?series=273848
Alper Nebi Yasak (2): rockchip: gru: Set up SoC IO domain registers rockchip: bob: Enable more configs
Marty E. Plummer (1): rockchip: rk3399: Add support for chromebook_kevin
Simon Glass (1): rockchip: gru: Add more devicetree settings
arch/arm/dts/Makefile | 1 + arch/arm/dts/rk3399-gru-kevin-u-boot.dtsi | 11 ++ arch/arm/dts/rk3399-gru-u-boot.dtsi | 55 +++++++++ arch/arm/mach-rockchip/rk3399/Kconfig | 11 ++ arch/arm/mach-rockchip/rk3399/rk3399.c | 3 +- arch/arm/mach-rockchip/spl.c | 3 +- board/google/gru/Kconfig | 16 +++ board/google/gru/MAINTAINERS | 8 ++ board/google/gru/gru.c | 54 ++++++++- configs/chromebook_bob_defconfig | 22 +++- configs/chromebook_kevin_defconfig | 111 ++++++++++++++++++ doc/board/rockchip/rockchip.rst | 1 + include/configs/gru.h | 3 + include/dt-bindings/input/linux-event-codes.h | 3 +- 14 files changed, 297 insertions(+), 5 deletions(-) create mode 100644 arch/arm/dts/rk3399-gru-kevin-u-boot.dtsi create mode 100644 configs/chromebook_kevin_defconfig