+Marek Hi Stefan,
On 1 February 2016 at 06:27, Stefan Roese <[email protected]> wrote: > Hi! > > I'm currently porting the Marvell mvpp2 driver for the Armada 375 > to U-Boot. This controller is a bit different, as it exposes > multiple interfaces per controller. In this specific case its > 2 interfaces. Here the current dts node: > > /* Network controller */ > ethernet@f0000 { > compatible = "marvell,armada-375-pp2"; > reg = <0xf0000 0xa000>, /* Packet Processor regs */ > <0xc0000 0x3060>, /* LMS regs */ > <0xc4000 0x100>, /* eth0 regs */ > <0xc5000 0x100>; /* eth1 regs */ > clocks = <&gateclk 3>, <&gateclk 19>; > clock-names = "pp_clk", "gop_clk"; > status = "disabled"; > > eth0: eth0@c4000 { > interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>; > port-id = <0>; > status = "disabled"; > }; > > eth1: eth1@c5000 { > interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>; > port-id = <1>; > status = "disabled"; > }; > }; > > Now I'm unsure, how to support those multiple network interfaces > with DM. As the driver will only get called once. And I can't > instantiate 2 network interfaces from the one probe function > call. > > I could work around this problem, by restructuring the DT node > into 2 separate DT nodes, each referencing the shared resources. > But this would be a ugly, since it results in a different DT > source between Linux and U-Boot. > > So my question is, is this something that is supported by the > current DM networking infrastructure? And if not, if you have > some hints on how to best support such a constellation with > multiple network interfaces via one ethernet controller. My suggestion would be to make this device a UCLASS_MISC or something like that, then in its bind() method, bind two new child devices in UCLASS_ETH. Marek was talking about something similar on IRC and I pointed him to the way the USB PHYs work, but clearly the device tree binding you have anticipates having two devices. Regards, Simon _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
