[PATCH 0/5] Enable I2C in SPL, support runtime detection of add-on board

[Chen-Yu Tsai]

Hi,

On Sat, May 23, 2020 at 2:04 AM <sunil at amarulasolutions.com> wrote:
>
> From: Suniel Mahesh <sunil at amarulasolutions.com>
>
> This patch series adds runtime detection of add-on board(ROC-RK3399-PC Mezzanine) by
> enabling I2C in SPL.
> This add on board hosts a CW2015 chip which is connected as slave to I2C2. In order
> to dynamically detect this add-on board at runtime, I2C2 is probed in SPL. If probe
> is successfull then a corresponding dtb is loaded, else regular dtb is loaded for
> the u-boot proper.
>
> Patch #1 moves board initialiation code after rk3399 init is done. Patch #2 enables
> I2C in SPL for any add-on board detection at run time. Patch #3 adds support for
> add-on board run-time detection. Patch #4 drops ROC-RK3399-PC Mezzanine board as this
> is an add-on board, it will be detected at runtime. Patch #5 enables PCIe/M.2 and NVMe,
> as this add-on board has a PCIe/M.2.
>
> Jagan Teki (1):
>   rockchip: spl: Move board_early_init_f after cpu timer
>
> Suniel Mahesh (4):
>   roc-pc-rk3399: Enable I2C in SPL for add-on board detection
>   roc-pc-rk3399: Add support for add-on board run-time detection
>   rk3399: drop ROC-RK3399-PC Mezzanine board
>   roc-pc-rk3399: Enable PCIe/M.2, NVMe
>
>  arch/arm/dts/rk3399-roc-pc-u-boot.dtsi      | 13 +++++
>  arch/arm/mach-rockchip/spl.c                |  5 +-
>  board/firefly/roc-pc-rk3399/MAINTAINERS     |  2 -
>  board/firefly/roc-pc-rk3399/roc-pc-rk3399.c | 56 ++++++++++++++++++++++
>  configs/roc-pc-mezzanine-rk3399_defconfig   | 74 -----------------------------


FYI this is going to be problematic for people that have the non-POE
version of the
mezzanine board and still want to access NVMe from U-boot. Maybe worth keeping a
target for these people to use.

ChenYu

>  configs/roc-pc-rk3399_defconfig             | 10 +++-
>  6 files changed, 81 insertions(+), 79 deletions(-)
>  delete mode 100644 configs/roc-pc-mezzanine-rk3399_defconfig
>
> --
> 2.7.4
>