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From: Serge Semin <Sergey.Semin@baikalelectronics.ru>
To: Mark Brown <broonie@kernel.org>, Rob Herring <robh+dt@kernel.org>
CC: Serge Semin <Sergey.Semin@baikalelectronics.ru>,
        Serge Semin <fancer.lancer@gmail.com>,
        Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru>,
        Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru>,
        Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Paul Burton <paulburton@kernel.org>,
        Ralf Baechle <ralf@linux-mips.org>,
        Arnd Bergmann <arnd@arndb.de>,
        Allison Randal <allison@lohutok.net>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Gareth Williams <gareth.williams.jx@renesas.com>,
        <linux-mips@vger.kernel.org>, <linux-spi@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH 02/17] dt-bindings: spi: dw: Add DMA properties bindings
Date: Fri, 8 May 2020 16:29:27 +0300
Message-ID: <20200508132943.9826-3-Sergey.Semin@baikalelectronics.ru>
In-Reply-To: <20200508132943.9826-1-Sergey.Semin@baikalelectronics.ru>
References: <20200508132943.9826-1-Sergey.Semin@baikalelectronics.ru>
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Since DW SPI controller may use DW DMA engine to perform the CPU-less
Tx/Rx SPI transfers and the DW SPI driver now supports it, 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
---
 .../devicetree/bindings/spi/snps,dw-apb-ssi.yaml       | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
index e2f6d8aa6181..454208842084 100644
--- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
+++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
@@ -73,6 +73,16 @@ properties:
     minimum: 1
     maximum: 4
 
+  dmas:
+    items:
+      - description: TX DMA Channel
+      - description: RX DMA Channel
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
 patternProperties:
   "^.*@[0-9a-f]+$":
     type: object