spi: microchip-core: fix init function not setting the master and motorola modes

Browse source

mchp_corespi_init() reads the CONTROL register, sets the master and
motorola bits, but doesn't write the value back to the register. The
function also doesn't ensure the controller is disabled at the start,
which may present a problem if the controller was used by an
earlier boot stage as some settings (including the mode) can only be
modified while the controller is disabled.

Fixes: 9ac8d17694 ("spi: add support for microchip fpga spi controllers")
Signed-off-by: Steve Wilkins <steve.wilkins@raymarine.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20240715-designing-thus-05f7c26e1da7@wendy
Signed-off-by: Mark Brown <broonie@kernel.org>

...

This commit is contained in:

Steve Wilkins 2024-07-15 12:13:55 +01:00 • committed by Mark Brown

parent de9850b5c6

commit 3a5e762836

No known key found for this signature in database

GPG key ID: 24D68B725D5487D0

1 changed files with 9 additions and 8 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

17

drivers/spi/spi-microchip-core.c

View file