On Fri, May 15, 2020 at 02:51:51PM +0300, Andy Shevchenko wrote:

On Fri, May 15, 2020 at 01:47:40PM +0300, Serge Semin wrote:

quoted

Since commit 22d48ad7bfac ("spi: dw: Add Elkhart Lake PSE DMA support")
the spi-dw-mid.c module supports a platform DMA engine handling the DW APB
SSI controller requests. Lets alter the DW SPI bindings file to accept the
Rx and Tx DMA line specifiers.

I'm wondering if these properties are implied by the SPI generic one?
(forgive me if I'm not understanding all DT schema relations)

Which SPI generic DMA bindings are you thinking of here?  There aren't
any in spi-controller.yaml.