Commit c9f4b252 authored by Paul Cercueil's avatar Paul Cercueil Committed by Thomas Bogendoerfer
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MIPS: DTS: CI20: Enable support for WiFi / Bluetooth 



Wire the WiFi/Bluetooth chip properly in the Device Tree.

- Provide it with the correct regulators and clocks;
- Change the MMC I/O bus to 1.8V which seems to be enough;
- Change the MMC I/O bus frequency to 25 MHz as 50 MHz causes errors;
- Fix the Bluetooth powerdown GPIO being inverted and add reset GPIO;
- Convert host-wakeup-gpios to IRQ.

With these changes, the WiFi works properly with the latest firmware
provided by linux-firmware. The Bluetooth does not work very well here,
as I cannot get my wireless keyboard to pair; but it does detect it, and
it does see the key presses when I type the pairing code.

Signed-off-by: default avatarPaul Cercueil <paul@crapouillou.net>
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
parent 868b70b9

arch/mips/boot/dts/ingenic/ci20.dts

+73 −15
Original line number Diff line number Diff line
@@ -97,10 +97,15 @@ 
		gpios = <&gpe 3 GPIO_ACTIVE_LOW>;

	};



	wlan0_power: fixedregulator-1 {

	bt_power: fixedregulator-1 {

		compatible = "regulator-fixed";



		regulator-name = "wlan0_power";

		regulator-name = "bt_power";

		regulator-min-microvolt = <3300000>;

		regulator-max-microvolt = <3300000>;

		regulator-settling-time-us = <1400>;



		vin-supply = <&vcc_50>;



		gpio = <&gpb 19 0>;

		enable-active-high;
@@ -116,6 +121,40 @@ 
		gpio = <&gpf 15 0>;

		enable-active-high;

	};



	wifi_power: fixedregulator-4 {

		compatible = "regulator-fixed";



		regulator-name = "wifi_power";



		/*

		 * Technically it's 5V, the WiFi chip has its own internal

		 * regulators; but the MMC/SD subsystem won't accept such a

		 * value.

		 */

		regulator-min-microvolt = <3300000>;

		regulator-max-microvolt = <3300000>;

		regulator-settling-time-us = <150000>;



		vin-supply = <&bt_power>;

	};



	vcc_33v: fixedregulator-5 {

		compatible = "regulator-fixed";



		regulator-name = "vcc_33v";

		regulator-min-microvolt = <3300000>;

		regulator-max-microvolt = <3300000>;

		regulator-always-on;

	};



	wifi_pwrseq: pwrseq {

		compatible = "mmc-pwrseq-simple";

		reset-gpios = <&gpf 7 GPIO_ACTIVE_LOW>;



		clocks = <&rtc_dev>;

		clock-names = "ext_clock";

	};

};



&ext {
@@ -161,24 +200,33 @@ 
	pinctrl-0 = <&pins_mmc0>;



	cd-gpios = <&gpf 20 GPIO_ACTIVE_LOW>;

	vmmc-supply = <&vcc_33v>;

	vqmmc-supply = <&vcc_33v>;

};



&mmc1 {

	status = "okay";



	bus-width = <4>;

	max-frequency = <50000000>;

	max-frequency = <25000000>;

	mmc-pwrseq = <&wifi_pwrseq>;

	vmmc-supply = <&wifi_power>;

	vqmmc-supply = <&wifi_io>;

	non-removable;



	pinctrl-names = "default";

	pinctrl-0 = <&pins_mmc1>;



	brcmf: wifi@1 {

/*		reg = <4>;*/

		compatible = "brcm,bcm4330-fmac";

		vcc-supply = <&wlan0_power>;

		device-wakeup-gpios = <&gpd 9 GPIO_ACTIVE_HIGH>;

		shutdown-gpios = <&gpf 7 GPIO_ACTIVE_LOW>;

	#address-cells = <1>;

	#size-cells = <0>;



	wifi@1 {

		compatible = "brcm,bcm4329-fmac";

		reg = <1>;



		interrupt-parent = <&gpd>;

		interrupts = <9 IRQ_TYPE_EDGE_FALLING>;

		interrupt-names = "host-wake";

	};

};
@@ -205,11 +253,20 @@ 


	bluetooth {

		compatible = "brcm,bcm4330-bt";

		reset-gpios = <&gpf 8 GPIO_ACTIVE_HIGH>;

		vcc-supply = <&wlan0_power>;



		vbat-supply = <&bt_power>;

		vddio-supply = <&wifi_io>;



		interrupt-parent = <&gpf>;

		interrupts = <6 IRQ_TYPE_EDGE_RISING>;

		interrupt-names = "host-wakeup";



		clocks = <&rtc_dev>;

		clock-names = "lpo";



		reset-gpios = <&gpf 8 GPIO_ACTIVE_LOW>;

		device-wakeup-gpios = <&gpf 5 GPIO_ACTIVE_HIGH>;

		host-wakeup-gpios = <&gpf 6 GPIO_ACTIVE_HIGH>;

		shutdown-gpios = <&gpf 4 GPIO_ACTIVE_LOW>;

		shutdown-gpios = <&gpf 4 GPIO_ACTIVE_HIGH>;

	};

};
@@ -270,8 +327,9 @@ 
				regulator-always-on;

			};

			wifi_io: LDO6 {

				regulator-min-microvolt = <2500000>;

				regulator-max-microvolt = <2500000>;

				regulator-min-microvolt = <1800000>;

				regulator-max-microvolt = <1800000>;

				regulator-settling-time-us = <150000>;

				inl-supply = <&vcc_33v>;

			};

			cim_io_28: LDO7 {