On Thu, Dec 21, 2017 at 11:53:47PM +0100, Linus Walleij wrote: > On Thu, Dec 21, 2017 at 6:32 PM, Russell King - ARM Linux > <linux@xxxxxxxxxxxxxxx> wrote: > > > What we have here is _really_ a shared interrupt between four > > separate devices, and we need a way to sanely describe resources > > shared between several device instances to pinmux. Unfortunately, > > it seems pinmux is designed around one device having exclusive use > > of a resource, which makes it hard to describe shared interrupts in > > DT. > > > > Given that DT should be a description of the hardware, and should be > > independent of the OS implementation, I'd say this is a pinmux bug, > > because pinmux gets in the way of describing the hardware correctly. > > ;) > > Hm that would be annoying. But when I look at it I think it would > actually work. Did you try just assigning the same pin control > state to all the PHY's and see what happens? > > Just set > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_mv88e1545>; > > on all of them? It was tried, DT was happy, but the kernel on boot complained because pinctrl objected, which caused the drivers to fail to bind: libphy: mdio: probed vf610-pinctrl 40048000.iomuxc: pin VF610_PAD_PTB0 already requested by !mdio-mux!mdio@4!switch@0!mdio:00; cannot claim for !mdio-mux!mdio@4!switch@0!mdio:01 vf610-pinctrl 40048000.iomuxc: pin-22 (!mdio-mux!mdio@4!switch@0!mdio:01) status -22 vf610-pinctrl 40048000.iomuxc: could not request pin 22 (VF610_PAD_PTB0) from group pinctrl-mv88e1545 on device 40048000.iomuxc Marvell 88E1545 !mdio-mux!mdio@4!switch@0!mdio:01: Error applying setting, reverse things back Marvell 88E1545: probe of !mdio-mux!mdio@4!switch@0!mdio:01 failed with error -22 vf610-pinctrl 40048000.iomuxc: pin VF610_PAD_PTB0 already requested by !mdio-mux!mdio@4!switch@0!mdio:00; cannot claim for !mdio-mux!mdio@4!switch@0!mdio:02 vf610-pinctrl 40048000.iomuxc: pin-22 (!mdio-mux!mdio@4!switch@0!mdio:02) status -22 vf610-pinctrl 40048000.iomuxc: could not request pin 22 (VF610_PAD_PTB0) from group pinctrl-mv88e1545 on device 40048000.iomuxc Marvell 88E1545 !mdio-mux!mdio@4!switch@0!mdio:02: Error applying setting, reverse things back Marvell 88E1545: probe of !mdio-mux!mdio@4!switch@0!mdio:02 failed with error -22 -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up According to speedtest.net: 8.21Mbps down 510kbps up -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
