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.Signed-off-by: Serge Semin <[email protected]> Cc: Georgy Vlasov <[email protected]> Cc: Ramil Zaripov <[email protected]> Cc: Alexey Malahov <[email protected]> Cc: Thomas Bogendoerfer <[email protected]> Cc: Paul Burton <[email protected]> Cc: Ralf Baechle <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Allison Randal <[email protected]> Cc: Andy Shevchenko <[email protected]> Cc: Gareth Williams <[email protected]> Cc: [email protected] --- Changelog v2: - Revert the order of the DT changes: first add the DMA channels support, then perform the binding file conversion. --- Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt index 7a4702edf896..020e3168ee41 100644 --- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt +++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt @@ -23,6 +23,8 @@ Optional properties: - num-cs : The number of chipselects. If omitted, this will default to 4. - reg-io-width : The I/O register width (in bytes) implemented by this device. Supported values are 2 or 4 (the default). +- dmas : Phandle + identifiers of Tx and Rx DMA channels. +- dma-names : Contains the names of the DMA channels. Must be "tx" and "rx". Child nodes as per the generic SPI binding. -- 2.25.1
