I wanted to update U-Boot on my RockPro64 board from some random build of 2020.07-rc with out of tree patches to official one. Built, flashed and then got this:
Loading Environment from SPI Flash... Invalid bus 0 (err=-19) *** Warning - spi_flash_probe_bus_cs() failed, using default environment
According to Peter Robinson it happens also on other RK3399 boards.
As I had a bit of time I started bisecting and found reason:
16:43 (7s) hrw@puchatek:u-boot$ git bisect good c4cea2bbf995764f325a907061c22ecd6768cf7b is the first bad commit commit c4cea2bbf995764f325a907061c22ecd6768cf7b Author: Simon Glass sjg@chromium.org Date: Sun Jul 19 13:55:58 2020 -0600
rockchip: Enable building a SPI ROM image on bob
Add a simple binman config and enable CONFIG_HAS_ROM so that U-Boot produces a ROM for bob.
Signed-off-by: Simon Glass sjg@chromium.org
arch/arm/dts/rk3399-gru-u-boot.dtsi | 4 ++++ arch/arm/dts/rk3399-gru.dtsi | 2 +- arch/arm/dts/rk3399-u-boot.dtsi | 27 +++++++++++++++++++++++++++ arch/arm/mach-rockchip/rk3399/Kconfig | 2 ++ 4 files changed, 34 insertions(+), 1 deletion(-)
Then I checked out HEAD of master branch, reverted that patch and SPI flash got detected properly.
Not looked yet on how it should be fixed.