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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7ff64afbc7
This adds the serial slave device for the WL1835 Bluetooth interface. Signed-off-by: Robert Nelson <robertcnelson@gmail.com> CC: Ricardo Salveti <ricardo.salveti@linaro.org> CC: Tony Lindgren <tony@atomide.com> CC: Jason Kridner <jkridner@beagleboard.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
132 lines
3.7 KiB
Plaintext
132 lines
3.7 KiB
Plaintext
/*
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/dts-v1/;
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#include "am33xx.dtsi"
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#include "am335x-bone-common.dtsi"
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#include "am335x-bonegreen-common.dtsi"
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#include <dt-bindings/interrupt-controller/irq.h>
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/ {
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model = "TI AM335x BeagleBone Green Wireless";
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compatible = "ti,am335x-bone-green-wireless", "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
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wlan_en_reg: fixedregulator@2 {
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compatible = "regulator-fixed";
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regulator-name = "wlan-en-regulator";
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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startup-delay-us= <70000>;
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/* WL_EN */
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gpio = <&gpio0 26 0>;
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enable-active-high;
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};
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};
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&am33xx_pinmux {
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bt_pins: pinmux_bt_pins {
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pinctrl-single,pins = <
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AM33XX_IOPAD(0x878, PIN_OUTPUT_PULLUP | MUX_MODE7) /* gpmc_ad12.gpio1_28 BT_EN */
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>;
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};
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mmc3_pins: pinmux_mmc3_pins {
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pinctrl-single,pins = <
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AM33XX_IOPAD(0x830, PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_ad12.mmc2_dat0 */
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AM33XX_IOPAD(0x834, PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_ad13.mmc2_dat1 */
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AM33XX_IOPAD(0x838, PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_ad14.mmc2_dat2 */
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AM33XX_IOPAD(0x83c, PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_ad15.mmc2_dat3 */
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AM33XX_IOPAD(0x888, PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_csn3.mmc2_cmd */
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AM33XX_IOPAD(0x88c, PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_clk.mmc2_clk */
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>;
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};
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uart3_pins: pinmux_uart3_pins {
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pinctrl-single,pins = <
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AM33XX_IOPAD(0x934, PIN_INPUT_PULLUP | MUX_MODE1) /* gmii1_rxd3.uart3_rxd */
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AM33XX_IOPAD(0x938, PIN_OUTPUT_PULLDOWN | MUX_MODE1) /* gmii1_rxd2.uart3_txd */
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AM33XX_IOPAD(0x948, PIN_INPUT | MUX_MODE3) /* mdio_data.uart3_ctsn */
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AM33XX_IOPAD(0x94c, PIN_OUTPUT_PULLDOWN | MUX_MODE3) /* mdio_clk.uart3_rtsn */
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>;
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};
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wl18xx_pins: pinmux_wl18xx_pins {
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pinctrl-single,pins = <
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AM33XX_IOPAD(0x828, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad10.gpio0_26 WL_EN */
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AM33XX_IOPAD(0x82C, PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad11.gpio0_27 WL_IRQ */
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AM33XX_IOPAD(0x87C, PIN_OUTPUT_PULLUP | MUX_MODE7) /* gpmc_csn0.gpio1_29 LS_BUF_EN */
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>;
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};
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};
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&mac {
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status = "disabled";
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};
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&mmc3 {
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dmas = <&edma_xbar 12 0 1
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&edma_xbar 13 0 2>;
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dma-names = "tx", "rx";
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status = "okay";
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vmmc-supply = <&wlan_en_reg>;
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bus-width = <4>;
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non-removable;
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cap-power-off-card;
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ti,needs-special-hs-handling;
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keep-power-in-suspend;
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pinctrl-names = "default";
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pinctrl-0 = <&mmc3_pins &wl18xx_pins>;
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#address-cells = <1>;
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#size-cells = <0>;
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wlcore: wlcore@2 {
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compatible = "ti,wl1835";
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reg = <2>;
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interrupt-parent = <&gpio0>;
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interrupts = <27 IRQ_TYPE_EDGE_RISING>;
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};
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};
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&uart3 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart3_pins &bt_pins>;
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status = "okay";
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bluetooth {
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compatible = "ti,wl1835-st";
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enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
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};
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};
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&gpio1 {
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ls_buf_en {
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gpio-hog;
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gpios = <29 GPIO_ACTIVE_HIGH>;
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output-high;
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line-name = "LS_BUF_EN";
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};
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};
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/* BT_AUD_OUT from wl1835 has to be pulled low when WL_EN is activated.*/
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/* in case it isn't, wilink8 ends up in one of the test modes that */
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/* intruces various issues (elp wkaeup timeouts etc.) */
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/* On the BBGW this pin is routed through the level shifter (U21) that */
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/* introduces a pullup on the line and wilink8 ends up in a bad state. */
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/* use a gpio hog to force this pin low. An alternative may be adding */
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/* an external pulldown on U21 pin 4. */
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&gpio3 {
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bt_aud_in {
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gpio-hog;
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gpios = <16 GPIO_ACTIVE_HIGH>;
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output-low;
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line-name = "MCASP0_AHCLKR";
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};
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};
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