From 6067ec2c7ffacab4689ddfed3df74a467d112efe Mon Sep 17 00:00:00 2001 From: Justin Swartz Date: Mon, 6 Apr 2020 13:50:04 +0000 Subject: [PATCH] ARM: dts: enable WLAN for Mecer Xtreme Mini S6 The Mecer Xtreme Mini S6 features a wireless module, based on a Realtek 8723BS, which provides WLAN and Bluetooth connectivity via SDIO and UART interfaces respectively. Define a simple MMC power sequence that declares the GPIO pins connected to the module's WLAN Disable and Bluetooth Disable pins as active low reset signals, because both signals must be deasserted for WLAN radio operation. Configure the host's SDIO interface for High Speed mode with 1.8v I/O signalling and IRQ detection over a 4-bit wide bus. Signed-off-by: Justin Swartz Link: https://lore.kernel.org/r/20200406135006.23759-1-justin.swartz@risingedge.co.za Signed-off-by: Heiko Stuebner --- arch/arm/boot/dts/rk3229-xms6.dts | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm/boot/dts/rk3229-xms6.dts b/arch/arm/boot/dts/rk3229-xms6.dts index 9252a73..727734d6 100644 --- a/arch/arm/boot/dts/rk3229-xms6.dts +++ b/arch/arm/boot/dts/rk3229-xms6.dts @@ -39,6 +39,12 @@ }; }; + sdio_pwrseq: sdio-pwrseq { + compatible = "mmc-pwrseq-simple"; + reset-gpios = <&gpio2 26 GPIO_ACTIVE_LOW>, + <&gpio2 29 GPIO_ACTIVE_LOW>; + }; + vcc_host: vcc-host-regulator { compatible = "regulator-fixed"; enable-active-high; @@ -202,6 +208,16 @@ status = "okay"; }; +&sdio { + bus-width = <4>; + cap-sd-highspeed; + cap-sdio-irq; + mmc-pwrseq = <&sdio_pwrseq>; + non-removable; + vqmmc-supply = <&vccio_1v8>; + status = "okay"; +}; + &sdmmc { cap-mmc-highspeed; disable-wp; -- 2.7.4