[PATCH v4 1/4] dt-bindings: net: bluetooth: Add broadcom-bluetooth

[PATCH v4 1/4] dt-bindings: net: bluetooth: Add broadcom-bluetooth

[Loic Poulain]

Add binding document for serial bluetooth chips using
Broadcom protocol.

Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
---
 v2: dt-bindings as separate patch
     rebase on upcoming pi3 dts changes
 v3: changes in bcm serdev drivers:
     name refactoring and additional comments
     Add generic host_set_baudrate method
     Use agnostic device_property_read
 v4: changes in doc and dts:
     Add additional params to broadcom bt dt-bindings
     Set the max baudrate to 2000000 instead of 921600
     use chosen/stdout-path instead of console=
     remove useless earlyprintk
     same changes in bcm283x.dtsi

 .../devicetree/bindings/net/broadcom-bluetooth.txt | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/broadcom-bluetooth.txt

diff --git a/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt b/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt
new file mode 100644
index 0000000..4194ff7
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt
@@ -0,0 +1,35 @@
+Broadcom Bluetooth Chips
+---------------------
+
+This documents the binding structure and common properties for serial
+attached Broadcom devices.
+
+Serial attached Broadcom devices shall be a child node of the host UART
+device the slave device is attached to.
+
+Required properties:
+
+ - compatible: should contain one of the following:
+   * "brcm,bcm43438-bt"
+
+Optional properties:
+
+ - max-speed: see Documentation/devicetree/bindings/serial/slave-device.txt
+ - shutdown-gpios: GPIO specifier, used to enable the BT module
+ - device-wakeup-gpios: GPIO specifier, used to wakeup the controller
+ - host-wakeup-gpios: GPIO specifier, used to wakeup the host processor
+ - clocks: clock specifier if external clock provided to the controller
+ - clock-names: should be "extclk"
+
+
+Example:
+
+&uart2 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart2_pins>;
+
+       bluetooth {
+               compatible = "brcm,bcm43438-bt";
+               max-speed = <921600>;
+       };
+};
-- 
1.9.1

[PATCH v4 2/4] ARM: dts: bcm283x: Use stdout-path instead of console bootarg

[Loic Poulain]

Add the serial port config to "chosen/stdout-path".
Create serial0/1 aliases referring to uart0 ant uart1 paths.
Remove unneeded earlyprintk.

Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
---
 v2: dt-bindings as separate patch
     rebase on upcoming pi3 dts changes
 v3: changes in bcm serdev drivers:
     name refactoring and additional comments
     Add generic host_set_baudrate method
     Use agnostic device_property_read
 v4: changes in doc and dts:
     Add additional params to broadcom bt dt-bindings
     Set the max baudrate to 2000000 instead of 921600
     use chosen/stdout-path instead of console=
     remove useless earlyprintk
     same changes in bcm283x.dtsi

 arch/arm/boot/dts/bcm283x.dtsi | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/bcm283x.dtsi b/arch/arm/boot/dts/bcm283x.dtsi
index 431dcfc..013431e 100644
--- a/arch/arm/boot/dts/bcm283x.dtsi
+++ b/arch/arm/boot/dts/bcm283x.dtsi
@@ -20,8 +20,13 @@
 	#address-cells = <1>;
 	#size-cells = <1>;
 
+	aliases {
+		serial0 = &uart0;
+		serial1 = &uart1;
+	};
+
 	chosen {
-		bootargs = "earlyprintk console=ttyAMA0";
+		stdout-path = "serial0:115200n8";
 	};
 
 	thermal-zones {
-- 
1.9.1

Re: [PATCH v4 2/4] ARM: dts: bcm283x: Use stdout-path instead of console bootarg

[Rob Herring]

On Thu, Aug 17, 2017 at 07:59:49PM +0200, Loic Poulain wrote:
> Add the serial port config to "chosen/stdout-path".
> Create serial0/1 aliases referring to uart0 ant uart1 paths.
> Remove unneeded earlyprintk.
> 
> Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
> ---
>  v2: dt-bindings as separate patch
>      rebase on upcoming pi3 dts changes
>  v3: changes in bcm serdev drivers:
>      name refactoring and additional comments
>      Add generic host_set_baudrate method
>      Use agnostic device_property_read
>  v4: changes in doc and dts:
>      Add additional params to broadcom bt dt-bindings
>      Set the max baudrate to 2000000 instead of 921600
>      use chosen/stdout-path instead of console=
>      remove useless earlyprintk
>      same changes in bcm283x.dtsi
> 
>  arch/arm/boot/dts/bcm283x.dtsi | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)

Acked-by: Rob Herring <robh@kernel.org>

[PATCH v4 3/4] ARM: dts: bcm2837-rpi-3-b: Add bcm43438 serial slave

[Loic Poulain]

Add BCM43438 (bluetooth) as a slave device of uart0 (pl011/ttyAMA0).
This allows to automatically insert the bcm43438 to the bluetooth
subsystem instead of relying on userspace helpers (hciattach).

Overwrite chosen/stdout-path to use 8250 aux uart as console.

Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
---
 v2: dt-bindings as separate patch
     rebase on upcoming pi3 dts changes
 v3: changes in bcm serdev drivers:
     name refactoring and additional comments
     Add generic host_set_baudrate method
     Use agnostic device_property_read
 v4: changes in doc and dts:
     Add additional params to broadcom bt dt-bindings
     Set the max baudrate to 2000000 instead of 921600
     use chosen/stdout-path instead of console=
     remove useless earlyprintk
     same changes in bcm283x.dtsi

 arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
index 20725ca..e4488cb 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
@@ -8,6 +8,11 @@
 	compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
 	model = "Raspberry Pi 3 Model B";
 
+	chosen {
+		/* 8250 auxiliar UART instead of pl011 */
+		stdout-path = "serial1:115200n8";
+	};
+
 	memory {
 		reg = <0 0x40000000>;
 	};
@@ -24,6 +29,11 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
 	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		max-speed = <2000000>;
+	};
 };
 
 /* uart1 is mapped to the pin header */
-- 
1.9.1

Re: [PATCH v4 3/4] ARM: dts: bcm2837-rpi-3-b: Add bcm43438 serial slave

[Rob Herring]

On Thu, Aug 17, 2017 at 07:59:50PM +0200, Loic Poulain wrote:
> Add BCM43438 (bluetooth) as a slave device of uart0 (pl011/ttyAMA0).
> This allows to automatically insert the bcm43438 to the bluetooth
> subsystem instead of relying on userspace helpers (hciattach).
> 
> Overwrite chosen/stdout-path to use 8250 aux uart as console.
> 
> Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
> ---
>  v2: dt-bindings as separate patch
>      rebase on upcoming pi3 dts changes
>  v3: changes in bcm serdev drivers:
>      name refactoring and additional comments
>      Add generic host_set_baudrate method
>      Use agnostic device_property_read
>  v4: changes in doc and dts:
>      Add additional params to broadcom bt dt-bindings
>      Set the max baudrate to 2000000 instead of 921600
>      use chosen/stdout-path instead of console=
>      remove useless earlyprintk
>      same changes in bcm283x.dtsi
> 
>  arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 10 ++++++++++
>  1 file changed, 10 insertions(+)

Acked-by: Rob Herring <robh@kernel.org>

Re: [PATCH v4 3/4] ARM: dts: bcm2837-rpi-3-b: Add bcm43438 serial slave

[Marcel Holtmann]

Hi Loic,

> Add BCM43438 (bluetooth) as a slave device of uart0 (pl011/ttyAMA0).
> This allows to automatically insert the bcm43438 to the bluetooth
> subsystem instead of relying on userspace helpers (hciattach).
> 
> Overwrite chosen/stdout-path to use 8250 aux uart as console.
> 
> Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
> ---
> v2: dt-bindings as separate patch
>     rebase on upcoming pi3 dts changes
> v3: changes in bcm serdev drivers:
>     name refactoring and additional comments
>     Add generic host_set_baudrate method
>     Use agnostic device_property_read
> v4: changes in doc and dts:
>     Add additional params to broadcom bt dt-bindings
>     Set the max baudrate to 2000000 instead of 921600
>     use chosen/stdout-path instead of console=
>     remove useless earlyprintk
>     same changes in bcm283x.dtsi
> 
> arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 10 ++++++++++
> 1 file changed, 10 insertions(+)

do you mind resending the 2 pending patches with Rob’s ack on it. And ensure that this goes with DT tree since I can currently not take it since net-next has not pulled in the pending DT patches.

Regards

Marcel

Re: [PATCH v4 3/4] ARM: dts: bcm2837-rpi-3-b: Add bcm43438 serial slave

[Eric Anholt]

[-- Attachment #1: Type: text/plain, Size: 1496 bytes --]

Marcel Holtmann <marcel@holtmann.org> writes:

> Hi Loic,
>
>> Add BCM43438 (bluetooth) as a slave device of uart0 (pl011/ttyAMA0).
>> This allows to automatically insert the bcm43438 to the bluetooth
>> subsystem instead of relying on userspace helpers (hciattach).
>> 
>> Overwrite chosen/stdout-path to use 8250 aux uart as console.
>> 
>> Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
>> ---
>> v2: dt-bindings as separate patch
>>     rebase on upcoming pi3 dts changes
>> v3: changes in bcm serdev drivers:
>>     name refactoring and additional comments
>>     Add generic host_set_baudrate method
>>     Use agnostic device_property_read
>> v4: changes in doc and dts:
>>     Add additional params to broadcom bt dt-bindings
>>     Set the max baudrate to 2000000 instead of 921600
>>     use chosen/stdout-path instead of console=
>>     remove useless earlyprintk
>>     same changes in bcm283x.dtsi
>> 
>> arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 10 ++++++++++
>> 1 file changed, 10 insertions(+)
>
> do you mind resending the 2 pending patches with Rob’s ack on it. And ensure that this goes with DT tree since I can currently not take it since net-next has not pulled in the pending DT patches.

Normally we wouldn't need a resend and I'd just apply the acks when
applying the DT patches, but I don't see them in my mail.

(Also, note that since we're already at rc6 I might not be able to apply
DT patches to -next until rc1 rolls around)

[-- Attachment #2: signature.asc --]
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Re: [PATCH v4 3/4] ARM: dts: bcm2837-rpi-3-b: Add bcm43438 serial slave

[Rob Herring]

On Wed, Aug 23, 2017 at 9:22 AM, Marcel Holtmann <marcel@holtmann.org> wrot=
e:
> Hi Loic,
>
>> Add BCM43438 (bluetooth) as a slave device of uart0 (pl011/ttyAMA0).
>> This allows to automatically insert the bcm43438 to the bluetooth
>> subsystem instead of relying on userspace helpers (hciattach).
>>
>> Overwrite chosen/stdout-path to use 8250 aux uart as console.
>>
>> Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
>> ---
>> v2: dt-bindings as separate patch
>>     rebase on upcoming pi3 dts changes
>> v3: changes in bcm serdev drivers:
>>     name refactoring and additional comments
>>     Add generic host_set_baudrate method
>>     Use agnostic device_property_read
>> v4: changes in doc and dts:
>>     Add additional params to broadcom bt dt-bindings
>>     Set the max baudrate to 2000000 instead of 921600
>>     use chosen/stdout-path instead of console=3D
>>     remove useless earlyprintk
>>     same changes in bcm283x.dtsi
>>
>> arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 10 ++++++++++
>> 1 file changed, 10 insertions(+)
>
> do you mind resending the 2 pending patches with Rob=E2=80=99s ack on it.=
 And ensure that this goes with DT tree since I can currently not take it s=
ince net-next has not pulled in the pending DT patches.

They will go thru arm-soc via the sub-arch maintainer (Florian I think).

Rob

[PATCH v4 4/4] Bluetooth: hci_bcm: Add serdev support

[Loic Poulain]

Add basic support for Broadcom serial slave devices.
Probe the serial device, retrieve its maximum speed and
register a new hci uart device.

Tested/compatible with bcm43438 (RPi3).

Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
---
 v2: dt-bindings as separate patch
     rebase on upcoming pi3 dts changes
 v3: changes in bcm serdev drivers:
     name refactoring and additional comments
     Add generic host_set_baudrate method
     Use agnostic device_property_read
 v4: changes in doc and dts:
     Add additional params to broadcom bt dt-bindings
     Set the max baudrate to 2000000 instead of 921600
     use chosen/stdout-path instead of console=
     remove useless earlyprintk
     same changes in bcm283x.dtsi

 drivers/bluetooth/hci_bcm.c | 85 +++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 83 insertions(+), 2 deletions(-)

diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index 1eb286a..34882f1 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -27,6 +27,8 @@
 #include <linux/firmware.h>
 #include <linux/module.h>
 #include <linux/acpi.h>
+#include <linux/of.h>
+#include <linux/property.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/gpio/consumer.h>
@@ -34,6 +36,7 @@
 #include <linux/interrupt.h>
 #include <linux/dmi.h>
 #include <linux/pm_runtime.h>
+#include <linux/serdev.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
@@ -46,6 +49,7 @@
 
 #define BCM_AUTOSUSPEND_DELAY	5000 /* default autosleep delay */
 
+/* platform device driver resources */
 struct bcm_device {
 	struct list_head	list;
 
@@ -69,6 +73,12 @@ struct bcm_device {
 #endif
 };
 
+/* serdev driver resources */
+struct bcm_serdev {
+	struct hci_uart hu;
+};
+
+/* generic bcm uart resources */
 struct bcm_data {
 	struct sk_buff		*rx_skb;
 	struct sk_buff_head	txq;
@@ -80,6 +90,14 @@ struct bcm_data {
 static DEFINE_MUTEX(bcm_device_lock);
 static LIST_HEAD(bcm_device_list);
 
+static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed)
+{
+	if (hu->serdev)
+		serdev_device_set_baudrate(hu->serdev, speed);
+	else
+		hci_uart_set_baudrate(hu, speed);
+}
+
 static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
 {
 	struct hci_dev *hdev = hu->hdev;
@@ -290,6 +308,14 @@ static int bcm_open(struct hci_uart *hu)
 
 	hu->priv = bcm;
 
+	/* If this is a serdev defined device, then only use
+	 * serdev open primitive and skip the rest.
+	 */
+	if (hu->serdev) {
+		serdev_device_open(hu->serdev);
+		goto out;
+	}
+
 	if (!hu->tty->dev)
 		goto out;
 
@@ -325,6 +351,12 @@ static int bcm_close(struct hci_uart *hu)
 
 	bt_dev_dbg(hu->hdev, "hu %p", hu);
 
+	/* If this is a serdev defined device, only use serdev
+	 * close primitive and then continue as usual.
+	 */
+	if (hu->serdev)
+		serdev_device_close(hu->serdev);
+
 	/* Protect bcm->dev against removal of the device or driver */
 	mutex_lock(&bcm_device_lock);
 	if (bcm_device_exists(bdev)) {
@@ -400,7 +432,7 @@ static int bcm_setup(struct hci_uart *hu)
 		speed = 0;
 
 	if (speed)
-		hci_uart_set_baudrate(hu, speed);
+		host_set_baudrate(hu, speed);
 
 	/* Operational speed if any */
 	if (hu->oper_speed)
@@ -413,7 +445,7 @@ static int bcm_setup(struct hci_uart *hu)
 	if (speed) {
 		err = bcm_set_baudrate(hu, speed);
 		if (!err)
-			hci_uart_set_baudrate(hu, speed);
+			host_set_baudrate(hu, speed);
 	}
 
 finalize:
@@ -906,9 +938,57 @@ static int bcm_remove(struct platform_device *pdev)
 	},
 };
 
+static int bcm_serdev_probe(struct serdev_device *serdev)
+{
+	struct bcm_serdev *bcmdev;
+	u32 speed;
+	int err;
+
+	bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL);
+	if (!bcmdev)
+		return -ENOMEM;
+
+	bcmdev->hu.serdev = serdev;
+	serdev_device_set_drvdata(serdev, bcmdev);
+
+	err = device_property_read_u32(&serdev->dev, "max-speed", &speed);
+	if (!err)
+		bcmdev->hu.oper_speed = speed;
+
+	return hci_uart_register_device(&bcmdev->hu, &bcm_proto);
+}
+
+static void bcm_serdev_remove(struct serdev_device *serdev)
+{
+	struct bcm_serdev *bcmdev = serdev_device_get_drvdata(serdev);
+
+	hci_uart_unregister_device(&bcmdev->hu);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id bcm_bluetooth_of_match[] = {
+	{ .compatible = "brcm,bcm43438-bt" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match);
+#endif
+
+static struct serdev_device_driver bcm_serdev_driver = {
+	.probe = bcm_serdev_probe,
+	.remove = bcm_serdev_remove,
+	.driver = {
+		.name = "hci_uart_bcm",
+		.of_match_table = of_match_ptr(bcm_bluetooth_of_match),
+	},
+};
+
 int __init bcm_init(void)
 {
+	/* For now, we need to keep both platform device
+	 * driver (ACPI generated) and serdev driver (DT).
+	 */
 	platform_driver_register(&bcm_driver);
+	serdev_device_driver_register(&bcm_serdev_driver);
 
 	return hci_uart_register_proto(&bcm_proto);
 }
@@ -916,6 +996,7 @@ int __init bcm_init(void)
 int __exit bcm_deinit(void)
 {
 	platform_driver_unregister(&bcm_driver);
+	serdev_device_driver_unregister(&bcm_serdev_driver);
 
 	return hci_uart_unregister_proto(&bcm_proto);
 }
-- 
1.9.1

Re: [PATCH v4 4/4] Bluetooth: hci_bcm: Add serdev support

[Marcel Holtmann]

Hi Loic,

> Add basic support for Broadcom serial slave devices.
> Probe the serial device, retrieve its maximum speed and
> register a new hci uart device.
> 
> Tested/compatible with bcm43438 (RPi3).
> 
> Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
> ---
> v2: dt-bindings as separate patch
>     rebase on upcoming pi3 dts changes
> v3: changes in bcm serdev drivers:
>     name refactoring and additional comments
>     Add generic host_set_baudrate method
>     Use agnostic device_property_read
> v4: changes in doc and dts:
>     Add additional params to broadcom bt dt-bindings
>     Set the max baudrate to 2000000 instead of 921600
>     use chosen/stdout-path instead of console=
>     remove useless earlyprintk
>     same changes in bcm283x.dtsi
> 
> drivers/bluetooth/hci_bcm.c | 85 +++++++++++++++++++++++++++++++++++++++++++--
> 1 file changed, 83 insertions(+), 2 deletions(-)

you are missing the serdev dependency.

diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index 3a6ead603e49..fae5a74dc737 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -168,6 +168,7 @@ config BT_HCIUART_INTEL
 config BT_HCIUART_BCM
        bool "Broadcom protocol support"
        depends on BT_HCIUART
+       depends on BT_HCIUART_SERDEV
        select BT_HCIUART_H4
        select BT_BCM
        help

Regards

Marcel

Re: [PATCH v4 4/4] Bluetooth: hci_bcm: Add serdev support

[Marcel Holtmann]

Hi Loic,

> Add basic support for Broadcom serial slave devices.
> Probe the serial device, retrieve its maximum speed and
> register a new hci uart device.
> 
> Tested/compatible with bcm43438 (RPi3).
> 
> Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
> ---
> v2: dt-bindings as separate patch
>     rebase on upcoming pi3 dts changes
> v3: changes in bcm serdev drivers:
>     name refactoring and additional comments
>     Add generic host_set_baudrate method
>     Use agnostic device_property_read
> v4: changes in doc and dts:
>     Add additional params to broadcom bt dt-bindings
>     Set the max baudrate to 2000000 instead of 921600
>     use chosen/stdout-path instead of console=
>     remove useless earlyprintk
>     same changes in bcm283x.dtsi
> 
> drivers/bluetooth/hci_bcm.c | 85 +++++++++++++++++++++++++++++++++++++++++++--
> 1 file changed, 83 insertions(+), 2 deletions(-)

I decided to amend your patch with the required Kconfig addition and then just applied 1/4 and 4/4 to bluetooth-next tree.

For 2/4 and 3/4, I think they should go through the DT tree since they depend on other changes. I can not apply since none of these changes are in any of my parent trees.

Regards

Marcel

Re: [PATCH v4 4/4] Bluetooth: hci_bcm: Add serdev support

[Loic Poulain]

Hi Marcel,


On 17/08/2017 21:48, Marcel Holtmann wrote:
> Hi Loic,
>
>> Add basic support for Broadcom serial slave devices.
>> Probe the serial device, retrieve its maximum speed and
>> register a new hci uart device.
>>
>> Tested/compatible with bcm43438 (RPi3).
>>
>> Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
>> ---
>> v2: dt-bindings as separate patch
>>      rebase on upcoming pi3 dts changes
>> v3: changes in bcm serdev drivers:
>>      name refactoring and additional comments
>>      Add generic host_set_baudrate method
>>      Use agnostic device_property_read
>> v4: changes in doc and dts:
>>      Add additional params to broadcom bt dt-bindings
>>      Set the max baudrate to 2000000 instead of 921600
>>      use chosen/stdout-path instead of console=
>>      remove useless earlyprintk
>>      same changes in bcm283x.dtsi
>>
>> drivers/bluetooth/hci_bcm.c | 85 +++++++++++++++++++++++++++++++++++++++++++--
>> 1 file changed, 83 insertions(+), 2 deletions(-)
> I decided to amend your patch with the required Kconfig addition and then just applied 1/4 and 4/4 to bluetooth-next tree.
>
> For 2/4 and 3/4, I think they should go through the DT tree since they depend on other changes. I can not apply since none of these changes are in any of my parent trees.
>
>
Thanks for the amend.

Indeed 2 and 3 depend on the following DT tree changes (Stefan):
[PATCH v2] ARM: dts: bcm283x: Move the BCM2837 DT contents from arm64 to 
arm.
[PATCH V2 0/3] ARM: bcm283x: Raspberry Pi Zero W support

Regards,
Loic

Re: [PATCH v4 1/4] dt-bindings: net: bluetooth: Add broadcom-bluetooth

[Rob Herring]

On Thu, Aug 17, 2017 at 07:59:48PM +0200, Loic Poulain wrote:
> Add binding document for serial bluetooth chips using
> Broadcom protocol.
> 
> Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
> ---
>  v2: dt-bindings as separate patch
>      rebase on upcoming pi3 dts changes
>  v3: changes in bcm serdev drivers:
>      name refactoring and additional comments
>      Add generic host_set_baudrate method
>      Use agnostic device_property_read
>  v4: changes in doc and dts:
>      Add additional params to broadcom bt dt-bindings
>      Set the max baudrate to 2000000 instead of 921600
>      use chosen/stdout-path instead of console=
>      remove useless earlyprintk
>      same changes in bcm283x.dtsi
> 
>  .../devicetree/bindings/net/broadcom-bluetooth.txt | 35 ++++++++++++++++++++++
>  1 file changed, 35 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/broadcom-bluetooth.txt

Acked-by: Rob Herring <robh@kernel.org>