realtek: rtl839x: Enable AUX MDIO controller

Enable the driver for the Realtek Otto auxiliary MDIO driver so RTL839x
devices can use it. The related node is added to the base devicetree for
rtl839x-based devices, so they can enabled and use it when required.

Signed-off-by: Sander Vanheule <sander@svanheule.net>

diff --git a/target/linux/realtek/dts/rtl839x.dtsi b/target/linux/realtek/dts/rtl839x.dtsi
index 3f87f5622e23df2206b0ebacfaefca9def2a0966..7fc5aea70c49708f4187746676dd8eb193929651 100644 (file)
--- a/target/linux/realtek/dts/rtl839x.dtsi
+++ b/target/linux/realtek/dts/rtl839x.dtsi
@@ -258,6 +258,22 @@
 
        };
 
+       switchcore@1b000000 {
+               compatible = "syscon", "simple-mfd";
+               reg = <0x1b000000 0x20000>;
+
+               mdio_aux: mdio-aux {
+                       compatible = "realtek,rtl8390-aux-mdio";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       status = "disabled";
+
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&mdio_aux_mdx>;
+               };
+       };
+
        pinmux@1b000004 {
                compatible = "pinctrl-single";
                reg = <0x1b000004 0x4>;
@@ -290,6 +306,11 @@
                pinmux_disable_sys_led: disable_sys_led {
                        pinctrl-single,bits = <0x0 0x0 0x4000>;
                };
+
+               /* enable AUX MDC/MDIO */
+               mdio_aux_mdx: aux-mdx-pins {
+                       pinctrl-single,bits = <0x0 0x100000 0x1c0000>;
+               };
        };
 
        ethernet0: ethernet@1b00a300 {

diff --git a/target/linux/realtek/rtl839x/config-6.6 b/target/linux/realtek/rtl839x/config-6.6
index 2616286a1729a7a6e3d56790fd941cc69d06ac88..dac7646925517c91fbf07328f3a03a79faca4e78 100644 (file)
--- a/target/linux/realtek/rtl839x/config-6.6
+++ b/target/linux/realtek/rtl839x/config-6.6
@@ -130,7 +130,7 @@ CONFIG_MDIO_BUS=y
 CONFIG_MDIO_DEVICE=y
 CONFIG_MDIO_DEVRES=y
 CONFIG_MDIO_I2C=y
-# CONFIG_MDIO_REALTEK_OTTO_AUX is not set
+CONFIG_MDIO_REALTEK_OTTO_AUX=y
 CONFIG_MDIO_SMBUS=y
 # CONFIG_MFD_RTL8231 is not set
 CONFIG_MFD_SYSCON=y