ARM: dts: rockchip: Add brcm bluetooth for rk3288-veyron

This enables the Broadcom uart bluetooth driver on uart0 and gives it
ownership of its gpios. In order to use this, you must enable the
following kconfig options:
- CONFIG_BT_HCIUART_BCM
- CONFIG_SERIAL_DEV

This is applicable to rk3288-veyron series boards that use the bcm43540
wifi+bt chips.

As part of this change, also refactor the pinctrl across the various
boards. All the boards using broadcom bluetooth shouldn't touch the
bt_dev_wake pin.

Signed-off-by: Abhishek Pandit-Subedi <[e-mail]>
Reviewed-by: Matthias Kaehlcke <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Heiko Stuebner <[e-mail]>

arch/arm/boot/dts/rk3288-veyron-brain.dts

···
 
 /dts-v1/;
 #include "rk3288-veyron.dtsi"
+#include "rk3288-veyron-broadcom-bluetooth.dtsi"
 
 / {
 	model = "Google Brain";
···
 };
 
 &pinctrl {
+	pinctrl-names = "default";
+	pinctrl-0 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+	>;
+
 	hdmi {
 		vcc50_hdmi_en: vcc50-hdmi-en {
 			rockchip,pins = <7 RK_PA2 RK_FUNC_GPIO &pcfg_pull_none>;

arch/arm/boot/dts/rk3288-veyron-broadcom-bluetooth.dtsi

···
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Google Veyron (and derivatives) fragment for the Broadcom 43450 bluetooth
+ * chip.
+ *
+ * Copyright 2019 Google, Inc
+ */
+
+&uart0 {
+	bluetooth {
+		pinctrl-names = "default";
+		pinctrl-0 = <&bt_host_wake_l>, <&bt_enable_l>,
+			    <&bt_dev_wake>;
+
+		compatible = "brcm,bcm43540-bt";
+		host-wakeup-gpios	= <&gpio4 RK_PD7 GPIO_ACTIVE_HIGH>;
+		shutdown-gpios		= <&gpio4 RK_PD5 GPIO_ACTIVE_HIGH>;
+		device-wakeup-gpios	= <&gpio4 RK_PD2 GPIO_ACTIVE_HIGH>;
+		max-speed		= <3000000>;
+		brcm,bt-pcm-int-params	= [01 02 00 01 01];
+	};
+};

arch/arm/boot/dts/rk3288-veyron-chromebook.dtsi

···
 };
 
 &pinctrl {
-	pinctrl-0 = <
-		/* Common for sleep and wake, but no owners */
-		&ddr0_retention
-		&ddrio_pwroff
-		&global_pwroff
-
-		/* Wake only */
-		&suspend_l_wake
-		&bt_dev_wake_awake
-	>;
-	pinctrl-1 = <
-		/* Common for sleep and wake, but no owners */
-		&ddr0_retention
-		&ddrio_pwroff
-		&global_pwroff
-
-		/* Sleep only */
-		&suspend_l_sleep
-		&bt_dev_wake_sleep
-	>;
-
 	buttons {
 		ap_lid_int_l: ap-lid-int-l {
 			rockchip,pins = <0 RK_PA6 RK_FUNC_GPIO &pcfg_pull_up>;

arch/arm/boot/dts/rk3288-veyron-fievel.dts

···
 		     "google,veyron-fievel-rev0", "google,veyron-fievel",
 		     "google,veyron", "rockchip,rk3288";
 
-	/delete-node/ bt-activity;
-
 	vccsys: vccsys {
 		compatible = "regulator-fixed";
 		regulator-name = "vccsys";

arch/arm/boot/dts/rk3288-veyron-jaq.dts

···
 };
 
 &pinctrl {
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+
+		/* Wake only */
+		&suspend_l_wake
+		&bt_dev_wake_awake
+	>;
+	pinctrl-1 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+
+		/* Sleep only */
+		&suspend_l_sleep
+		&bt_dev_wake_sleep
+	>;
+
 	buck-5v {
 		drv_5v: drv-5v {
 			rockchip,pins = <7 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>;

arch/arm/boot/dts/rk3288-veyron-jerry.dts

···
 };
 
 &pinctrl {
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+
+		/* Wake only */
+		&suspend_l_wake
+		&bt_dev_wake_awake
+	>;
+	pinctrl-1 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+
+		/* Sleep only */
+		&suspend_l_sleep
+		&bt_dev_wake_sleep
+	>;
+
 	buck-5v {
 		drv_5v: drv-5v {
 			rockchip,pins = <7 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>;

arch/arm/boot/dts/rk3288-veyron-mickey.dts

···
 
 /dts-v1/;
 #include "rk3288-veyron.dtsi"
+#include "rk3288-veyron-broadcom-bluetooth.dtsi"
 
 / {
 	model = "Google Mickey";
···
 };
 
 &pinctrl {
+	pinctrl-names = "default";
+	pinctrl-0 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+	>;
+
 	hdmi {
 		power_hdmi_on: power-hdmi-on {
 			rockchip,pins = <7 RK_PB3 RK_FUNC_GPIO &pcfg_pull_none>;

arch/arm/boot/dts/rk3288-veyron-minnie.dts

···
 
 /dts-v1/;
 #include "rk3288-veyron-chromebook.dtsi"
+#include "rk3288-veyron-broadcom-bluetooth.dtsi"
 
 / {
 	model = "Google Minnie";
···
 };
 
 &pinctrl {
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+
+		/* Wake only */
+		&suspend_l_wake
+	>;
+	pinctrl-1 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+
+		/* Sleep only */
+		&suspend_l_sleep
+	>;
+
 	buck-5v {
 		drv_5v: drv-5v {
 			rockchip,pins = <7 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>;

arch/arm/boot/dts/rk3288-veyron-pinky.dts

···
 };
 
 &pinctrl {
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+
+		/* Wake only */
+		&suspend_l_wake
+		&bt_dev_wake_awake
+	>;
+	pinctrl-1 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+
+		/* Sleep only */
+		&suspend_l_sleep
+		&bt_dev_wake_sleep
+	>;
+
 	/delete-node/ lcd;
 
 	backlight {

arch/arm/boot/dts/rk3288-veyron-speedy.dts

···
 
 /dts-v1/;
 #include "rk3288-veyron-chromebook.dtsi"
+#include "rk3288-veyron-broadcom-bluetooth.dtsi"
 #include "cros-ec-sbs.dtsi"
 
 / {
···
 };
 
 &pinctrl {
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+
+		/* Wake only */
+		&suspend_l_wake
+	>;
+	pinctrl-1 = <
+		/* Common for sleep and wake, but no owners */
+		&ddr0_retention
+		&ddrio_pwroff
+		&global_pwroff
+
+		/* Sleep only */
+		&suspend_l_sleep
+	>;
+
 	buck-5v {
 		drv_5v: drv-5v {
 			rockchip,pins = <7 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>;

arch/arm/boot/dts/rk3288-veyron.dtsi

···
 		reg = <0x0 0x0 0x0 0x80000000>;
 	};
 
-	bt_activity: bt-activity {
-		compatible = "gpio-keys";
-		pinctrl-names = "default";
-		pinctrl-0 = <&bt_host_wake>;
-
-		/*
-		 * HACK: until we have an LPM driver, we'll use an
-		 * ugly GPIO key to allow Bluetooth to wake from S3.
-		 * This is expected to only be used by BT modules that
-		 * use UART for comms.  For BT modules that talk over
-		 * SDIO we should use a wakeup mechanism related to SDIO.
-		 *
-		 * Use KEY_RESERVED here since that will work as a wakeup but
-		 * doesn't get reported to higher levels (so doesn't confuse
-		 * Chrome).
-		 */
-		bt-wake {
-			label = "BT Wakeup";
-			gpios = <&gpio4 RK_PD7 GPIO_ACTIVE_HIGH>;
-			linux,code = <KEY_RESERVED>;
-			wakeup-source;
-		};
-
-	};
 
 	power_button: power-button {
 		compatible = "gpio-keys";
···
 		clocks = <&rk808 RK808_CLKOUT1>;
 		clock-names = "ext_clock";
 		pinctrl-names = "default";
-		pinctrl-0 = <&bt_enable_l>, <&wifi_enable_h>;
+		pinctrl-0 = <&wifi_enable_h>;
 
 		/*
-		 * Depending on the actual card populated GPIO4 D4 and D5
+		 * Depending on the actual card populated GPIO4 D4
 		 * correspond to one of these signals on the module:
 		 *
 		 * D4:
 		 * - SDIO_RESET_L_WL_REG_ON
 		 * - PDN (power down when low)
-		 *
-		 * D5:
-		 * - BT_I2S_WS_BT_RFDISABLE_L
-		 * - No connect
 		 */
-		reset-gpios = <&gpio4 RK_PD4 GPIO_ACTIVE_LOW>,
-			      <&gpio4 RK_PD5 GPIO_ACTIVE_LOW>;
+		reset-gpios = <&gpio4 RK_PD4 GPIO_ACTIVE_LOW>;
 	};
 
 	vcc_5v: vcc-5v {
···
 };
 
 &pinctrl {
-	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <
-		/* Common for sleep and wake, but no owners */
-		&ddr0_retention
-		&ddrio_pwroff
-		&global_pwroff
-
-		/* Wake only */
-		&bt_dev_wake_awake
-	>;
-	pinctrl-1 = <
-		/* Common for sleep and wake, but no owners */
-		&ddr0_retention
-		&ddrio_pwroff
-		&global_pwroff
-
-		/* Sleep only */
-		&bt_dev_wake_sleep
-	>;
-
 	pcfg_pull_none_drv_8ma: pcfg-pull-none-drv-8ma {
 		bias-disable;
 		drive-strength = <8>;
···
 
 		bt_dev_wake_awake: bt-dev-wake-awake {
 			rockchip,pins = <4 RK_PD2 RK_FUNC_GPIO &pcfg_output_high>;
+		};
+
+		bt_dev_wake: bt-dev-wake {
+			rockchip,pins = <4 RK_PD2 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
 	};