ARM: dts: omap3-igep0020: Add SMSC911x LAN chip support

The IGEPv2 board has an SMSC LAN9221i ethernet chip connected to
the OMAP3 processor though the General-Purpose Memory Controller.

This patch adds a device node for the ethernet chip as a GPMC child
and all its dependencies (regulators, GPIO and pin muxs).

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Benoit Cousson <benoit.cousson@linaro.org>

2 files changed, 59 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/omap3-igep.dtsi b/arch/arm/boot/dts/omap3-igep.dtsi
index f8fe3b748c3e..d5cd504bc180 100644
--- a/arch/arm/boot/dts/omap3-igep.dtsi
+++ b/arch/arm/boot/dts/omap3-igep.dtsi
@@ -62,6 +62,12 @@
                         0x126 0x0100    /* sdmmc1_dat7.sdmmc1_dat7 INPUT | MODE 0 */
                 >;
         };
+
+        smsc911x_pins: pinmux_smsc911x_pins {
+                pinctrl-single,pins = <
+                        0x1a2 0x0104    /* mcspi1_cs2.gpio_176 INPUT | MODE4 */
+                >;
+        };
 };
 
 &i2c1 {
diff --git a/arch/arm/boot/dts/omap3-igep0020.dts b/arch/arm/boot/dts/omap3-igep0020.dts
index e2b98490cc9a..4bac32e77be4 100644
--- a/arch/arm/boot/dts/omap3-igep0020.dts
+++ b/arch/arm/boot/dts/omap3-igep0020.dts
@@ -40,6 +40,18 @@
                         gpios = <&twl_gpio 19 1>;
                 };
         };
+
+        vddvario: regulator-vddvario {
+                  compatible = "regulator-fixed";
+                  regulator-name = "vddvario";
+                  regulator-always-on;
+        };
+
+        vdd33a: regulator-vdd33a {
+                compatible = "regulator-fixed";
+                regulator-name = "vdd33a";
+                regulator-always-on;
+        };
 };
 
 &i2c3 {
@@ -54,3 +66,44 @@
                 reg = <0x50>;
         };
 };
+
+&gpmc {
+        ranges = <5 0 0x2c000000 0x1000000>;
+        ethernet@5,0 {
+                pinctrl-names = "default";
+                pinctrl-0 = <&smsc911x_pins>;
+                compatible = "smsc,lan9221", "smsc,lan9115";
+                reg = <5 0 0xff>;
+                bank-width = <2>;
+
+                gpmc,mux-add-data;
+                gpmc,cs-on-ns = <0>;
+                gpmc,cs-rd-off-ns = <186>;
+                gpmc,cs-wr-off-ns = <186>;
+                gpmc,adv-on-ns = <12>;
+                gpmc,adv-rd-off-ns = <48>;
+                gpmc,adv-wr-off-ns = <48>;
+                gpmc,oe-on-ns = <54>;
+                gpmc,oe-off-ns = <168>;
+                gpmc,we-on-ns = <54>;
+                gpmc,we-off-ns = <168>;
+                gpmc,rd-cycle-ns = <186>;
+                gpmc,wr-cycle-ns = <186>;
+                gpmc,access-ns = <114>;
+                gpmc,page-burst-access-ns = <6>;
+                gpmc,bus-turnaround-ns = <12>;
+                gpmc,cycle2cycle-delay-ns = <18>;
+                gpmc,wr-data-mux-bus-ns = <90>;
+                gpmc,wr-access-ns = <186>;
+                gpmc,cycle2cycle-samecsen;
+                gpmc,cycle2cycle-diffcsen;
+
+                interrupt-parent = <&gpio6>;
+                interrupts = <16 8>;
+                vmmc-supply = <&vddvario>;
+                vmmc_aux-supply = <&vdd33a>;
+                reg-io-width = <4>;
+
+                smsc,save-mac-address;
+        };
+};