[PATCH v4 3/8] spi: stm32: Add 'SPI_SIMPLEX_RX', 'SPI_3WIRE_RX' support for stm32f4

Mark Brown broonie at kernel.org
Fri May 22 16:29:01 UTC 2020

On Fri, May 22, 2020 at 11:59:25PM +0800, dillon min wrote:

> but, after spi-core create a dummy tx_buf or rx_buf, then i can't get
> the correct spi_3wire direction.
> actually, this dummy tx_buf is useless for SPI_3WIRE. it's has meaning
> for SPI_SIMPLE_RX mode,

Oh, that's annoying.  I think the fix here is in the core, it should
ignore MUST_TX and MUST_RX in 3WIRE mode since they clearly make no
sense there.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: not available
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20200522/4ed0ec14/attachment.sig>

More information about the dri-devel mailing list