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Date: Thu, 18 Feb 2016 11:45:12 +0100 From: Arnd Bergmann <arnd@...db.de> To: Vladimir Murzin <vladimir.murzin@....com> Cc: mark.rutland@....com, devicetree@...r.kernel.org, linux@....linux.org.uk, pawel.moll@....com, ijc+devicetree@...lion.org.uk, gregkh@...uxfoundation.org, daniel.lezcano@...aro.org, linux-kernel@...r.kernel.org, robh+dt@...nel.org, andy.shevchenko@...il.com, galak@...eaurora.org, linux-serial@...r.kernel.org, u.kleine-koenig@...gutronix.de, tglx@...utronix.de, linux-api@...r.kernel.org, jslaby@...e.cz, linux-arm-kernel@...ts.infradead.org Subject: Re: [PATCH v3 09/10] ARM: dts: introduce MPS2 AN385/AN386 On Thursday 18 February 2016 10:11:37 Vladimir Murzin wrote: > > Right, I thought in a wrong way, in opposite it makes more sense now. > > .dtsi > > /* below the soc/ */ > smb { > compatible = "simple-bus"; > #address-cells = <2>; > #size-cells = <1>; > ranges = <0 0 0x40200000 0x10000>, > <1 0 0xa0000000 0x10000>; > }; That looks good, yes. Is 0x10000 the correct maximum addressable size of the external bus in both cases? Intuitively, I would guess that the 0xa0000000 range might be much wider. > .dts > > smb { > ethernet@0,0 { > compatible = "smsc,lan9220", "smsc,lan9115"; > reg = <0 0x0 0x10000>; > interrupts = <13>; > interrupt-parent = <&nvic>; > smsc,irq-active-high; > }; > > > and looking again at .dtsi it seems to me that fpgaio should be moved > below the soc/ under separate bus interface which would hosts audio and > spi too or I keep missing things around device-tree? > I don't see the audio and spi nodes, so I'm not sure where exactly you would put them. Ideally those things should be visible from a block diagram in the datasheet. Arnd
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