Commit fbb7c4a1 authored by Stephan Gerhold's avatar Stephan Gerhold Committed by Linus Walleij
Browse files

ARM: dts: ux500: samsung-golden: Add WiFi 



samsung-golden uses a BCM4334 WiFi+BT combo chip, connected to SDIO.
It is supported by the brcmfmac driver in mainline,
so we only need to set up the device tree to make it work correctly.

Note: brcmfmac requires (proprietary) firmware + a device-specific
NVRAM file. Both can be extracted from the stock Android system
used on samsung-golden:
  - /system/etc/wifi/bcmdhd_sta.bin_b2   -> /lib/firmware/brcm/brcmfmac4334-sdio.bin
  - /system/etc/wifi/nvram_net.txt_GPIO4 -> /lib/firmware/brcm/brcmfmac4334-sdio.samsung,golden.txt

brcmfmac4334-sdio.bin from linux-firmware also seems to work,
but results in occasional errors for some reason.

Signed-off-by: default avatarStephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20191219202052.19039-8-stephan@gerhold.net


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 234a0387

arch/arm/boot/dts/ste-ux500-samsung-golden.dts

+56 −0
Original line number Diff line number Diff line
@@ -64,9 +64,27 @@ sdi1_per2@80118000 { 
			non-removable;

			cap-sd-highspeed;



			vmmc-supply = <&wl_reg_on>;



			pinctrl-names = "default", "sleep";

			pinctrl-0 = <&mc1_a_2_default>;

			pinctrl-1 = <&mc1_a_2_sleep>;



			#address-cells = <1>;

			#size-cells = <0>;



			wifi@1 {

				compatible = "brcm,bcm4329-fmac";

				reg = <1>;



				/* GPIO216 (WLAN_HOST_WAKE) */

				interrupt-parent = <&gpio6>;

				interrupts = <24 IRQ_TYPE_EDGE_FALLING>;

				interrupt-names = "host-wake";



				pinctrl-names = "default";

				pinctrl-0 = <&wlan_default>;

			};

		};



		/* eMMC */
@@ -290,6 +308,28 @@ sd_level_translator: regulator-sd-level-translator { 
		pinctrl-names = "default";

		pinctrl-0 = <&sd_level_translator_default>;

	};



	/*

	 * WL_REG_ON takes WLAN out of reset and enables the internal regulators.

	 * The voltage specified here is only used to determine the OCR mask,

	 * the BCM chip is actually connected directly to VBAT.

	 */

	wl_reg_on: regulator-wl-reg-on {

		compatible = "regulator-fixed";



		regulator-name = "wl-reg-on";

		regulator-min-microvolt = <3000000>;

		regulator-max-microvolt = <3000000>;



		startup-delay-us = <100000>;



		/* GPIO215 (WLAN_EN) */

		gpio = <&gpio6 23 GPIO_ACTIVE_HIGH>;

		enable-active-high;



		pinctrl-names = "default";

		pinctrl-0 = <&wlan_en_default>;

	};

};



&pinctrl {
@@ -340,6 +380,22 @@ golden_cfg1 { 
		};

	};



	wlan {

		wlan_default: wlan_default {

			golden_cfg1 {

				pins = "GPIO216_AG12";	/* WLAN_HOST_WAKE */

				ste,config = <&gpio_in_pd>;

			};

		};



		wlan_en_default: wlan_en_default {

			golden_cfg1 {

				pins = "GPIO215_AH13";	/* WLAN_EN */

				ste,config = <&gpio_out_lo>;

			};

		};

	};



	vibrator {

		vibrator_default: vibrator_default {

			golden_cfg1 {