diff options
| author | Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2020-05-15 13:47:40 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-05-15 18:54:11 +0100 |
| commit | 7db097dcddef6718aee850d9d9ba4a29c8a9c7d9 (patch) | |
| tree | 464bfa84a6fdf2f83287ba6fc137e7c409dfa50c /Documentation | |
| parent | b271cf339b03267a7abde4454ea881de9b3af614 (diff) | |
spi: dw: Add Tx/Rx DMA properties
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 <Sergey.Semin@baikalelectronics.ru>
Cc: Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru>
Cc: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru>
Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Allison Randal <allison@lohutok.net>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Gareth Williams <gareth.williams.jx@renesas.com>
Cc: linux-mips@vger.kernel.org
Link: https://lore.kernel.org/r/20200515104758.6934-2-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt | 2 |
1 files changed, 2 insertions, 0 deletions
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. |