spi: rzv2h-rspi: enable TX buffer empty interrupt

In preparation for implementing DMA support, enable the transmit buffer
empty interrupt, which is necessary for DMA to write more data to the
FIFO.

This does not affect the PIO mode as we do not even request the TX
interrupt line.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Link: https://patch.msgid.link/20251201134229.600817-9-cosmin-gabriel.tanislav.xa@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cosmin Tanislav 2025-12-01 15:42:24 +02:00 • committed by Mark Brown
commit d49eea07de
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0