[PATCH 0/7] Add bluetooth, gps and accelerometer to TBS A711

[PATCH 0/7] Add bluetooth, gps and accelerometer to TBS A711

[megous]

From: Ondrej Jirman <megous@megous.com>

This series enables some peripherals on TBS A711 tablet that already
have mainline drivers:

- GPS u-blox neo-6m (via gnss u-blox driver)
- Bluetooth (via recently added OF support in the Broadcom
  bluetooth driver)
- Accelermomter BMA-250 (hooked to the I2C bus)

It also modifies A83T DTSI and adds missing UART interfaces.

I've added additional compatible to the gnss/u-blox driver for NEO-6M,
because this board uses this module, and I don't think I can use
the existing compatible for u-blox,neo-m8, even as a fallback.

Please take a look, and apply the patches if you have no objections.

Many of the patches will go through the sunxi tree, but I'm not
sure who will want to take the GPS patches.

regards,
  Ondrej Jirman

Ondrej Jirman (7):
  ARM: dts: sun8i: tbs-a711: Enable bluetooth
  ARM: dts: sun8i: tbs-a711: Add node for BMA250 accelerometer
  ARM: dts: sun8i: a83t: Add nodes for UART2-UART4
  ARM: dts: sun8i: a83t: Add UART2 PB pins
  gnss: Add u-blox,neo-6m compatible
  dt-bindings: gnss: Add u-blox,neo-6m compatible
  ARM: dts: sun8i: tbs-a711: Enable UART2 (for NEO-6M GPS module)

 .../devicetree/bindings/gnss/u-blox.txt       |  1 +
 arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts     | 49 +++++++++++++++++++
 arch/arm/boot/dts/sun8i-a83t.dtsi             | 38 ++++++++++++++
 drivers/gnss/ubx.c                            |  1 +
 4 files changed, 89 insertions(+)

-- 
2.21.0

[PATCH 1/7] ARM: dts: sun8i: tbs-a711: Enable bluetooth

[megous]

From: Ondrej Jirman <megous@megous.com>

TBS A711 tablet has a bcm20702a1 bluetooth chip (part of AP6210 WiFi/BT
module) connected to UART1. Add node for the blutooth chip.

The driver needs brcm/BCM20702A1.hcd firmware file to run.

Signed-off-by: Ondrej Jirman <megous@megous.com>
---
 arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
index 1e840ab5a541..6aae70c89a1e 100644
--- a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
+++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
@@ -406,7 +406,20 @@
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
+	uart-has-rtscts;
 	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm20702a1";
+		clocks = <&ac100_rtc 1>;
+		clock-names = "lpo";
+		vbat-supply = <&reg_vbat>;
+		vddio-supply = <&reg_dldo1>;
+		device-wakeup-gpios = <&pio 7 5 GPIO_ACTIVE_HIGH>; /* PH5 */
+		host-wakeup-gpios = <&r_pio 0 5 GPIO_ACTIVE_HIGH>; /* PL5 */
+		shutdown-gpios = <&r_pio 0 4 GPIO_ACTIVE_HIGH>; /* PL4 */
+		max-speed = <1500000>;
+	};
 };
 
 &usb_otg {
-- 
2.21.0

[PATCH 2/7] ARM: dts: sun8i: tbs-a711: Add node for BMA250 accelerometer

[megous]

From: Ondrej Jirman <megous@megous.com>

A711 tablet has BMA250 accelerometer connected to I2C1 bus. Enable
both the I2C1 bus and add the accelerometer device to it.

Signed-off-by: Ondrej Jirman <megous@megous.com>
---
 arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
index 6aae70c89a1e..347fc0c31fa4 100644
--- a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
+++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
@@ -156,6 +156,21 @@
 	status = "okay";
 };
 
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <400000>;
+	status = "okay";
+
+	/* Accelerometer */
+	bma250@18 {
+		compatible = "bosch,bma250";
+		reg = <0x18>;
+		interrupt-parent = <&pio>;
+		interrupts = <7 10 IRQ_TYPE_EDGE_RISING>; /* PH10 / EINT10 */
+	};
+};
+
 &mmc0 {
 	vmmc-supply = <&reg_dcdc1>;
 	pinctrl-names = "default";
-- 
2.21.0

[PATCH 3/7] ARM: dts: sun8i: a83t: Add nodes for UART2-UART4

[megous]

From: Ondrej Jirman <megous@megous.com>

A83T has 5 UART interfaces, but only the first two have their nodes
defined in sun8i-a83t.dtsi. Add nodes for the missing interfaces.

Signed-off-by: Ondrej Jirman <megous@megous.com>
---
 arch/arm/boot/dts/sun8i-a83t.dtsi | 33 +++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a83t.dtsi b/arch/arm/boot/dts/sun8i-a83t.dtsi
index fcb7ef5ce2df..e5c39eef1c29 100644
--- a/arch/arm/boot/dts/sun8i-a83t.dtsi
+++ b/arch/arm/boot/dts/sun8i-a83t.dtsi
@@ -873,6 +873,39 @@
 			status = "disabled";
 		};
 
+		uart2: serial@1c28800 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x01c28800 0x400>;
+			interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&ccu CLK_BUS_UART2>;
+			resets = <&ccu RST_BUS_UART2>;
+			status = "disabled";
+		};
+
+		uart3: serial@1c28c00 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x01c28c00 0x400>;
+			interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&ccu CLK_BUS_UART3>;
+			resets = <&ccu RST_BUS_UART3>;
+			status = "disabled";
+		};
+
+		uart4: serial@1c29000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x01c29000 0x400>;
+			interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&ccu CLK_BUS_UART4>;
+			resets = <&ccu RST_BUS_UART4>;
+			status = "disabled";
+		};
+
 		i2c0: i2c@1c2ac00 {
 			compatible = "allwinner,sun8i-a83t-i2c",
 				     "allwinner,sun6i-a31-i2c";
-- 
2.21.0

[PATCH 4/7] ARM: dts: sun8i: a83t: Add UART2 PB pins

[megous]

From: Ondrej Jirman <megous@megous.com>

Add pin definitions for UART2 PB pins. These are used on TBS-A711
tablet.

Signed-off-by: Ondrej Jirman <megous@megous.com>
---
 arch/arm/boot/dts/sun8i-a83t.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a83t.dtsi b/arch/arm/boot/dts/sun8i-a83t.dtsi
index e5c39eef1c29..921cfb30ab46 100644
--- a/arch/arm/boot/dts/sun8i-a83t.dtsi
+++ b/arch/arm/boot/dts/sun8i-a83t.dtsi
@@ -768,6 +768,11 @@
 				pins = "PG8", "PG9";
 				function = "uart1";
 			};
+
+			uart2_pb_pins: uart2-pb-pins {
+				pins = "PB0", "PB1";
+				function = "uart2";
+			};
 		};
 
 		timer@1c20c00 {
-- 
2.21.0

[PATCH 5/7] gnss: Add u-blox,neo-6m compatible

[megous]

From: Ondrej Jirman <megous@megous.com>

Add compatible for u-blox NEO-6M GPS module.

Signed-off-by: Ondrej Jirman <megous@megous.com>
---
 drivers/gnss/ubx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gnss/ubx.c b/drivers/gnss/ubx.c
index 12568aebb7f6..1ada2fad1d4e 100644
--- a/drivers/gnss/ubx.c
+++ b/drivers/gnss/ubx.c
@@ -132,6 +132,7 @@ static void ubx_remove(struct serdev_device *serdev)
 static const struct of_device_id ubx_of_match[] = {
 	{ .compatible = "u-blox,neo-8" },
 	{ .compatible = "u-blox,neo-m8" },
+	{ .compatible = "u-blox,neo-6m" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, ubx_of_match);
-- 
2.21.0

[PATCH 6/7] dt-bindings: gnss: Add u-blox,neo-6m compatible

[megous]

From: Ondrej Jirman <megous@megous.com>

Add compatible for u-blox NEO-6M GPS module.

Signed-off-by: Ondrej Jirman <megous@megous.com>
---
 Documentation/devicetree/bindings/gnss/u-blox.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/gnss/u-blox.txt b/Documentation/devicetree/bindings/gnss/u-blox.txt
index e475659cb85f..7cdefd058fe0 100644
--- a/Documentation/devicetree/bindings/gnss/u-blox.txt
+++ b/Documentation/devicetree/bindings/gnss/u-blox.txt
@@ -9,6 +9,7 @@ Required properties:
 
 - compatible	: Must be one of
 
+			"u-blox,neo-6m"
 			"u-blox,neo-8"
 			"u-blox,neo-m8"
 
-- 
2.21.0

[PATCH 7/7] ARM: dts: sun8i: tbs-a711: Enable UART2 (for NEO-6M GPS module)

[megous]

From: Ondrej Jirman <megous@megous.com>

TBS A711 tablet contains u-blox NEO-6M module connected to UART2.
Enable UART2 to gain access to the module from userspace.

Signed-off-by: Ondrej Jirman <megous@megous.com>
---
 arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
index 347fc0c31fa4..f9e7f5d3eff5 100644
--- a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
+++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
@@ -98,6 +98,13 @@
 		};
 	};
 
+	reg_gps: reg-gps {
+		compatible = "regulator-fixed";
+		regulator-name = "gps";
+		regulator-min-microvolt = <3000000>;
+		regulator-max-microvolt = <3000000>;
+	};
+
 	reg_vbat: reg-vbat {
 		compatible = "regulator-fixed";
 		regulator-name = "vbat";
@@ -437,6 +444,20 @@
 	};
 };
 
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart2_pb_pins>;
+	status = "okay";
+
+	gnss {
+		compatible = "u-blox,neo-6m";
+
+		v-bckp-supply = <&reg_rtc_ldo>;
+		vcc-supply = <&reg_gps>;
+		current-speed = <9600>;
+	};
+};
+
 &usb_otg {
 	dr_mode = "otg";
 	status = "okay";
-- 
2.21.0

Re: [linux-sunxi] [PATCH 4/7] ARM: dts: sun8i: a83t: Add UART2 PB pins

[Chen-Yu Tsai]

On Wed, Mar 27, 2019 at 8:18 AM megous via linux-sunxi
<linux-sunxi@googlegroups.com> wrote:
>
> From: Ondrej Jirman <megous@megous.com>
>
> Add pin definitions for UART2 PB pins. These are used on TBS-A711
> tablet.
>
> Signed-off-by: Ondrej Jirman <megous@megous.com>
> ---
>  arch/arm/boot/dts/sun8i-a83t.dtsi | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm/boot/dts/sun8i-a83t.dtsi b/arch/arm/boot/dts/sun8i-a83t.dtsi
> index e5c39eef1c29..921cfb30ab46 100644
> --- a/arch/arm/boot/dts/sun8i-a83t.dtsi
> +++ b/arch/arm/boot/dts/sun8i-a83t.dtsi
> @@ -768,6 +768,11 @@
>                                 pins = "PG8", "PG9";
>                                 function = "uart1";
>                         };
> +

Please add "/omit-if-no-ref/" before the pin definitions.

See

https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git/commit/?h=sunxi/dt-for-5.2&id=73b670023327a014688c2d5309a43604cd553f1e

for such an example. This is a new policy.

ChenYu


> +                       uart2_pb_pins: uart2-pb-pins {
> +                               pins = "PB0", "PB1";
> +                               function = "uart2";
> +                       };
>                 };
>
>                 timer@1c20c00 {
> --
> 2.21.0
>
> --
> You received this message because you are subscribed to the Google Groups "linux-sunxi" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscribe@googlegroups.com.
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Re: [PATCH 6/7] dt-bindings: gnss: Add u-blox,neo-6m compatible

[Rob Herring]

On Wed, 27 Mar 2019 01:18:42 +0100, megous@megous.com wrote:
> From: Ondrej Jirman <megous@megous.com>
> 
> Add compatible for u-blox NEO-6M GPS module.
> 
> Signed-off-by: Ondrej Jirman <megous@megous.com>
> ---
>  Documentation/devicetree/bindings/gnss/u-blox.txt | 1 +
>  1 file changed, 1 insertion(+)
> 

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

Re: [PATCH 2/7] ARM: dts: sun8i: tbs-a711: Add node for BMA250 accelerometer

[Maxime Ripard]

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Hi,

On Wed, Mar 27, 2019 at 01:18:38AM +0100, megous@megous.com wrote:
> From: Ondrej Jirman <megous@megous.com>
>
> A711 tablet has BMA250 accelerometer connected to I2C1 bus. Enable
> both the I2C1 bus and add the accelerometer device to it.
>
> Signed-off-by: Ondrej Jirman <megous@megous.com>
> ---
>  arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
>
> diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> index 6aae70c89a1e..347fc0c31fa4 100644
> --- a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> +++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> @@ -156,6 +156,21 @@
>  	status = "okay";
>  };
>
> +&i2c1 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c1_pins>;

It's there already

> +	clock-frequency = <400000>;
> +	status = "okay";
> +
> +	/* Accelerometer */
> +	bma250@18 {

The node name should be the class of the device, not its model, so
something like accelerometer.

Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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Re: [PATCH 1/7] ARM: dts: sun8i: tbs-a711: Enable bluetooth

[Maxime Ripard]

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Hi,

On Wed, Mar 27, 2019 at 01:18:37AM +0100, megous@megous.com wrote:
> From: Ondrej Jirman <megous@megous.com>
>
> TBS A711 tablet has a bcm20702a1 bluetooth chip (part of AP6210 WiFi/BT
> module) connected to UART1. Add node for the blutooth chip.
>
> The driver needs brcm/BCM20702A1.hcd firmware file to run.
>
> Signed-off-by: Ondrej Jirman <megous@megous.com>

Applied, thanks!
Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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Re: [PATCH 3/7] ARM: dts: sun8i: a83t: Add nodes for UART2-UART4

[Maxime Ripard]

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On Wed, Mar 27, 2019 at 01:18:39AM +0100, megous@megous.com wrote:
> From: Ondrej Jirman <megous@megous.com>
>
> A83T has 5 UART interfaces, but only the first two have their nodes
> defined in sun8i-a83t.dtsi. Add nodes for the missing interfaces.
>
> Signed-off-by: Ondrej Jirman <megous@megous.com>

Applied, thanks!
Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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Re: [PATCH 2/7] ARM: dts: sun8i: tbs-a711: Add node for BMA250 accelerometer

[Ondřej Jirman]

Hello Maxime,

On Mon, Apr 01, 2019 at 08:30:49AM +0200, Maxime Ripard wrote:
> Hi,
> 
> On Wed, Mar 27, 2019 at 01:18:38AM +0100, megous@megous.com wrote:
> > From: Ondrej Jirman <megous@megous.com>
> >
> > A711 tablet has BMA250 accelerometer connected to I2C1 bus. Enable
> > both the I2C1 bus and add the accelerometer device to it.
> >
> > Signed-off-by: Ondrej Jirman <megous@megous.com>
> > ---
> >  arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 15 +++++++++++++++
> >  1 file changed, 15 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> > index 6aae70c89a1e..347fc0c31fa4 100644
> > --- a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> > +++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> > @@ -156,6 +156,21 @@
> >  	status = "okay";
> >  };
> >
> > +&i2c1 {
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&i2c1_pins>;
> 
> It's there already

I see, I'll drop it. Thanks.

> > +	clock-frequency = <400000>;
> > +	status = "okay";
> > +
> > +	/* Accelerometer */
> > +	bma250@18 {
> 
> The node name should be the class of the device, not its model, so
> something like accelerometer.

I'll rename this.

thank you,
  Ondrej

> Maxime
> 
> --
> Maxime Ripard, Bootlin
> Embedded Linux and Kernel engineering
> https://bootlin.com