From 621efefc9b3135408de818c01528bc3adacd557c Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Fri, 26 Aug 2016 16:52:36 +0200 Subject: 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 Signed-off-by: Maxime Ripard --- arch/arm/boot/dts/sun8i-q8-common.dtsi | 49 ++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) (limited to 'arch/arm/boot/dts/sun8i-q8-common.dtsi') 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 = <®_dldo1>; + mmc-pwrseq = <&wifi_pwrseq>; + bus-width = <4>; + non-removable; + status = "okay"; + + sdio_wifi: sdio_wifi@1 { + reg = <1>; + }; +}; + +&mmc1_pins_a { + allwinner,pull = ; +}; + +&r_pio { + wifi_pwrseq_pin_q8: wifi_pwrseq_pin@0 { + allwinner,pins = "PL6", "PL7", "PL11"; + allwinner,function = "gpio_in"; + allwinner,drive = ; + allwinner,pull = ; + }; +}; + &usbphy { usb1_vbus-supply = <®_dldo1>; }; -- cgit