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Date: Fri, 15 May 2020 13:47:40 +0300 From: Serge Semin <Sergey.Semin@...kalelectronics.ru> To: Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org> CC: Serge Semin <Sergey.Semin@...kalelectronics.ru>, Serge Semin <fancer.lancer@...il.com>, Georgy Vlasov <Georgy.Vlasov@...kalelectronics.ru>, Ramil Zaripov <Ramil.Zaripov@...kalelectronics.ru>, Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>, Thomas Bogendoerfer <tsbogend@...ha.franken.de>, Paul Burton <paulburton@...nel.org>, Ralf Baechle <ralf@...ux-mips.org>, Arnd Bergmann <arnd@...db.de>, Allison Randal <allison@...utok.net>, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Gareth Williams <gareth.williams.jx@...esas.com>, <linux-mips@...r.kernel.org>, Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@...el.com>, <linux-spi@...r.kernel.org>, <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org> Subject: [PATCH v2 01/19] dt-bindings: 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@...kalelectronics.ru> Cc: Georgy Vlasov <Georgy.Vlasov@...kalelectronics.ru> Cc: Ramil Zaripov <Ramil.Zaripov@...kalelectronics.ru> Cc: Alexey Malahov <Alexey.Malahov@...kalelectronics.ru> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de> Cc: Paul Burton <paulburton@...nel.org> Cc: Ralf Baechle <ralf@...ux-mips.org> Cc: Arnd Bergmann <arnd@...db.de> Cc: Allison Randal <allison@...utok.net> Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com> Cc: Gareth Williams <gareth.williams.jx@...esas.com> Cc: linux-mips@...r.kernel.org --- 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
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