tree 223f6e49bd55e0aa88d2ca62773c15fbe680d226
parent d411359d919a7efae5e9379b83986c553bc57b34
author Simon Glass <sjg@chromium.org> 1651301806 -0600
committer Tom Rini <trini@konsulko.com> 1651499893 -0400

doc: Expand SPL docs to explain the phase and config

Add a bit more information about how to use SPL.

Signed-off-by: Simon Glass <sjg@chromium.org>