doc: rockchip: puma: update build and flash instructions
authorQuentin Schulz <quentin.schulz@theobroma-systems.com>
Fri, 12 Nov 2021 14:15:50 +0000 (15:15 +0100)
committerKever Yang <kever.yang@rock-chips.com>
Fri, 24 Dec 2021 06:53:31 +0000 (14:53 +0800)
commit780fc003ed2b70c49d3ddee99923594ccbc2adf6
treebb72c76770dfe40eb44d9023709e51377f0ae8a6
parentf8b36089af26c3596a8b3796af336cee42cc1757
doc: rockchip: puma: update build and flash instructions

Long gone is the time a custom TF-A was needed for Puma, upstream TF-A
works just fine now.

The flashing instructions are updated to match how newer rkdeveloptool
and rkbin work.

Finally, rkbin provides a way to flash SPI via USB OTG interface so
let's document that.

Cc: Quentin Schulz <foss+u-boot@0leil.net>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
board/theobroma-systems/puma_rk3399/README
doc/README.rockchip