spi: dw: add check for support of enhanced spi

Browse source

Before doing the mem op, spi controller will be queried about the
buswidths it supports. Add the single/dual/quad/octal if the controller
has the DW_SPI_CAP_EMODE capability.
The DW_SPI_CAP_EMODE capability will be enabled in a later patch.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@sifive.com>
Co-developed-by: Changhuang Liang <changhuang.liang@starfivetech.com>
Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
Link: https://patch.msgid.link/20260803124044.156998-4-changhuang.liang@starfivetech.com
Signed-off-by: Mark Brown <broonie@kernel.org>

...

This commit is contained in:

Sudip Mukherjee 2026-08-03 05:40:36 -07:00 • committed by Mark Brown

parent 607687a869

commit f6b36efcbe

No known key found for this signature in database

GPG key ID: 24D68B725D5487D0

2 changed files with 34 additions and 1 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

34

drivers/spi/spi-dw-core.c

View file

1

drivers/spi/spi-dw.h

View file