ARM: dts: add SMSC ethernet on the APQ8060 Dragonboard

The SMSC9112 ethernet controller is connected to chip select 2
on the EBI2 bus on the APQ8060 Dragonboard. We set this up by
activating EBI2, creating a chipselect entry as a subnode, and then
putting the ethernet controller in a subnode of the chipselect.

After the chipselect is configured, the SMSC device will be
instantiated.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

diff --git a/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts b/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts
index 6c00383..4b8872c 100644 (file)
--- a/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts
+++ b/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts
@@ -51,6 +51,29 @@
                        regulator-boot-on;
                };
 
+               /* GPIO controlled ethernet power regulator */
+               dragon_veth: xc622a331mrg {
+                       compatible = "regulator-fixed";
+                       regulator-name = "XC6222A331MR-G";
+                       regulator-min-microvolt = <3300000>;
+                       regulator-max-microvolt = <3300000>;
+                       vin-supply = <&vph>;
+                       gpio = <&pm8058_gpio 40 GPIO_ACTIVE_HIGH>;
+                       enable-active-high;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&dragon_veth_gpios>;
+                       regulator-always-on;
+               };
+
+               /* VDDvario fixed regulator */
+               dragon_vario: nds332p {
+                       compatible = "regulator-fixed";
+                       regulator-name = "NDS332P";
+                       regulator-min-microvolt = <1800000>;
+                       regulator-max-microvolt = <1800000>;
+                       vin-supply = <&pm8058_s3>;
+               };
+
                /* This is a levelshifter for SDCC5 */
                dragon_vio_txb: txb0104rgyr {
                        compatible = "regulator-fixed";
@@ -167,6 +190,36 @@
                                        bias-pull-up;
                                };
                        };
+
+                       dragon_ebi2_pins: ebi2 {
+                               /*
+                                * Pins used by EBI2 on the Dragonboard, actually only
+                                * CS2 is used by a real peripheral. CS0 is just
+                                * routed to a test point.
+                                */
+                               mux0 {
+                                       pins =
+                                           /* "gpio39", CS1A_N this is not good to mux */
+                                           "gpio40", /* CS2A_N */
+                                           "gpio134"; /* CS0_N testpoint TP29 */
+                                       function = "ebi2cs";
+                               };
+                               mux1 {
+                                       pins =
+                                           /* EBI2_ADDR_7 downto EBI2_ADDR_0 address bus */
+                                           "gpio123", "gpio124", "gpio125", "gpio126",
+                                           "gpio127", "gpio128", "gpio129", "gpio130",
+                                           /* EBI2_DATA_15 downto EBI2_DATA_0 data bus */
+                                           "gpio135", "gpio136", "gpio137", "gpio138",
+                                           "gpio139", "gpio140", "gpio141", "gpio142",
+                                           "gpio143", "gpio144", "gpio145", "gpio146",
+                                           "gpio147", "gpio148", "gpio149", "gpio150",
+                                           "gpio151", /* EBI2_OE_N */
+                                           "gpio153", /* EBI2_ADV */
+                                           "gpio157"; /* EBI2_WE_N */
+                                       function = "ebi2";
+                               };
+                       };
                };
 
                qcom,ssbi@500000 {
@@ -201,6 +254,15 @@
                                };
 
                                gpio@150 {
+                                       dragon_ethernet_gpios: ethernet-gpios {
+                                               pinconf {
+                                                       pins = "gpio7";
+                                                       function = "normal";
+                                                       input-enable;
+                                                       bias-disable;
+                                                       power-source = <PM8058_GPIO_S3>;
+                                               };
+                                       };
                                        dragon_bmp085_gpios: bmp085-gpios {
                                                pinconf {
                                                        pins = "gpio16";
@@ -238,6 +300,14 @@
                                                        power-source = <PM8058_GPIO_S3>;
                                                };
                                        };
+                                       dragon_veth_gpios: veth-gpios {
+                                               pinconf {
+                                                       pins = "gpio40";
+                                                       function = "normal";
+                                                       bias-disable;
+                                                       drive-push-pull;
+                                               };
+                                       };
                                };
 
                                led@48 {
@@ -322,6 +392,55 @@
                        };
                };
 
+               external-bus@1a100000 {
+                       /* The EBI2 will instantiate first, then populate its children */
+                       status = "ok";
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&dragon_ebi2_pins>;
+
+                       /*
+                        * An on-board SMSC LAN9221 chip for "debug ethernet",
+                        * which is actually just an ordinary ethernet on the
+                        * EBI2. This has a 25MHz chrystal next to it, so no
+                        * clocking is needed.
+                        */
+                       ethernet-ebi2@2,0 {
+                               compatible = "smsc,lan9221", "smsc,lan9115";
+                               reg = <2 0x0 0x100>;
+                               /*
+                                * GPIO7 has interrupt 198 on the PM8058
+                                * The second interrupt is the PME interrupt
+                                * for network wakeup, connected to the TLMM.
+                                */
+                               interrupts-extended = <&pmicintc 198 IRQ_TYPE_EDGE_FALLING>,
+                                                   <&tlmm 29 IRQ_TYPE_EDGE_RISING>;
+                               reset-gpios = <&tlmm 30 GPIO_ACTIVE_LOW>;
+                               vdd33a-supply = <&dragon_veth>;
+                               vddvario-supply = <&dragon_vario>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&dragon_ethernet_gpios>;
+                               phy-mode = "mii";
+                               reg-io-width = <2>;
+                               smsc,force-external-phy;
+                               /* IRQ on edge falling = active low */
+                               smsc,irq-active-low;
+                               smsc,irq-push-pull;
+
+                               /*
+                                * SLOW chipselect config
+                                * Delay 9 cycles (140ns@64MHz) between SMSC
+                                * LAN9221 Ethernet controller reads and writes
+                                * on CS2.
+                                */
+                               qcom,xmem-recovery-cycles = <0>;
+                               qcom,xmem-write-hold-cycles = <3>;
+                               qcom,xmem-write-delta-cycles = <31>;
+                               qcom,xmem-read-delta-cycles = <28>;
+                               qcom,xmem-write-wait-cycles = <9>;
+                               qcom,xmem-read-wait-cycles = <9>;
+                       };
+               };
+
                rpm@104000 {
                        /*
                         * Set up of the PMIC RPM regulators for this board