linux-kernel - Re: [PATCH v2 01/19] dt-bindings: spi: dw: Add Tx/Rx DMA properties

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Message-ID: <20200515122715.GC5066@sirena.org.uk>
Date:   Fri, 15 May 2020 13:27:15 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Rob Herring <robh+dt@...nel.org>,
        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>,
        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: Re: [PATCH v2 01/19] dt-bindings: spi: dw: Add Tx/Rx DMA properties

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:

> > 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.

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