tree 9f4334fb344de2b086001ecdbebdd054d4008a8d
parent 127dde8d40f91a6dbeeca4882043b2de88946683
author Vabhav Sharma <vabhav.sharma@nxp.com> 1607490723 +0530
committer Tom Rini <trini@konsulko.com> 1610826549 -0500

dm: core: add function uclass_probe_all() to probe all devices

Support a common method to probe all devices associated with uclass.

This includes data structures and code for finding the first device and
looping for remaining devices associated with uclasses (groups of devices
with the same purpose, e.g. all SERIAL ports will be in the same uclass).

An example is SBSA compliant PL011 UART IP, where firmware does the serial
port initialization and prepare uart device to let the kernel use it for
sending and reveiving the characters.SERIAL uclass will use this function
to initialize PL011 UART ports.

The feature is enabled with CONFIG_DM.

Signed-off-by: Vabhav Sharma <vabhav.sharma@nxp.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Sean Anderson <seanga2@gmail.com>