[PATCH 3/4] arm: dts: gr-peach: Add ETHER pin group

Thanks Geert,

On Thu, Aug 24, 2017 at 01:56:16PM +0200, Geert Uytterhoeven wrote:

Hi Jacopo,

[snip]

quoted

I haven't find any mention in device tree bindings documentation of a
"reset-gpio" property for sh_eth, in the code examples I've seen in
u-boot and mbed, the interface is reset before any actual
configuration is performed. I feel like that should be the place where
that gpio is requested and cycled...

Documentation/devicetree/bindings/net/mdio.txt says

These are generic properties that can apply to any MDIO bus.

I have now used mdio defined generic properties

&ether {
	pinctrl-names = "default";
	pinctrl-0 = <&ether_pins>;

	status = "okay";

	reset-gpios = <&port4 2 GPIO_ACTIVE_LOW>;
	reset-delay-us = <5>;

	renesas,no-ether-link;
	phy-handle = <&phy0>;
	phy0: ethernet-phy at 0 {
               reg = <0>;
	};
};

I see the gpio being cycled, but same results as before: device gets
probed, address set, but I cannot ping, device gets probed, address
gets set, but I cannot ping

--- target ---

[    0.000000] libphy: sh_mii: probed
[    0.000000] sh-eth e8203000.ethernet eth0: Base address at 0xe8203000, 68:14:97:20:97:00, IRQ 22.

# ifconfig eth0 192.168.100.50
[    0.000000] Generic PHY e8203000.ethernet-ffffffff:00: attached PHY driver [Generic PHY] (mii_bus:phy_addr=e8203000.ethernet-f)

--- host ---

$ping 192.168.100.50
PING 192.168.100.50 (192.168.100.50) 56(84) bytes of data.

From 192.168.100.18 icmp_seq=1 Destination Host Unreachable
From 192.168.100.18 icmp_seq=1 Destination Host Unreachable
From 192.168.100.18 icmp_seq=1 Destination Host Unreachable

Let's leave this out of the DTS series I've just sent for now, ok?

Thanks
   j

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds