spi: ma35d1-qspi: Add GPIO chip select support

The generic SPI controller binding allows GPIO-based chip selects, but
the MA35D1 QSPI driver does not currently enable the SPI core's GPIO
descriptor handling.

Enable GPIO chip-select support and specify that the controller provides
two native chip selects. Add a setup callback to reject active-high
polarity only for native chip selects, while allowing GPIO chip selects
to use the polarity handled by the GPIO subsystem.

This keeps the binding capable of describing valid board wiring while
preserving the active-low limitation of the controller's native chip
selects.

Signed-off-by: Chi-Wen Weng <cwweng@nuvoton.com>
Link: https://patch.msgid.link/20261001131818.110028-4-cwweng.linux@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

0 files changed, 0 insertions, 0 deletions