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

sunil at amarulasolutions.com
2020-05-22T18:03:23Z

From: Suniel Mahesh <sunil@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 -----------------------------
configs/roc-pc-rk3399_defconfig | 10 +++-
6 files changed, 81 insertions(+), 79 deletions(-)
delete mode 100644 configs/roc-pc-mezzanine-rk3399_defconfig

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2.7.4