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authorHans de Goede <hdegoede@redhat.com>2016-08-26 16:52:36 +0200
committerMaxime Ripard <maxime.ripard@free-electrons.com>2016-09-05 21:57:20 +0200
commit621efefc9b3135408de818c01528bc3adacd557c (patch)
treec803afe3b3ce93b1160373ad3900400cf878631f /arch/arm/boot/dts/sun8i-q8-common.dtsi
parent2ea3c34bc2ee83d2ae9701d5194054be62a05105 (diff)
ARM: dts: sun8i-q8-common: Add support for SDIO wifi controllers
Most of the sun8i q8 boards have an SDIO wifi controller, on the variants which use an USB wifi controller, this will result in a couple of error msg-s in dmesg when proving the sdio bus and an used mmc controller. The best way to deal with wifi on this boards really is to simply let the kernel auto-detect usb or sdio wifi controllers, so we will just have to live with the few errors in dmesg. This has been tested on a23 based q8 tablets with ESP8089, RTL8703AS and RTL8189FTV wifi controllers. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Diffstat (limited to 'arch/arm/boot/dts/sun8i-q8-common.dtsi')
-rw-r--r--arch/arm/boot/dts/sun8i-q8-common.dtsi49
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/sun8i-q8-common.dtsi b/arch/arm/boot/dts/sun8i-q8-common.dtsi
index 60fa9585022b..29f837a47771 100644
--- a/arch/arm/boot/dts/sun8i-q8-common.dtsi
+++ b/arch/arm/boot/dts/sun8i-q8-common.dtsi
@@ -42,10 +42,59 @@
#include "sunxi-reference-design-tablet.dtsi"
#include "sun8i-reference-design-tablet.dtsi"
+/ {
+ aliases {
+ serial0 = &r_uart;
+ /* Make u-boot set mac-address for wifi without an eeprom */
+ ethernet0 = &sdio_wifi;
+ };
+
+ wifi_pwrseq: wifi_pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ /*
+ * Q8 boards use various PL# pins as wifi-en. On other boards
+ * these may be connected to a wifi module output pin. To avoid
+ * short-circuits we configure these as inputs with pull-ups via
+ * pinctrl, instead of listing them as active-low reset-gpios.
+ */
+ pinctrl-names = "default";
+ pinctrl-0 = <&wifi_pwrseq_pin_q8>;
+ /* The esp8089 needs 200 ms after driving wifi-en high */
+ post-power-on-delay-ms = <200>;
+ };
+};
+
&ehci0 {
status = "okay";
};
+&mmc1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc1_pins_a>;
+ vmmc-supply = <&reg_dldo1>;
+ mmc-pwrseq = <&wifi_pwrseq>;
+ bus-width = <4>;
+ non-removable;
+ status = "okay";
+
+ sdio_wifi: sdio_wifi@1 {
+ reg = <1>;
+ };
+};
+
+&mmc1_pins_a {
+ allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
+};
+
+&r_pio {
+ wifi_pwrseq_pin_q8: wifi_pwrseq_pin@0 {
+ allwinner,pins = "PL6", "PL7", "PL11";
+ allwinner,function = "gpio_in";
+ allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
+ };
+};
+
&usbphy {
usb1_vbus-supply = <&reg_dldo1>;
};