diff mbox

[v2,3/3] ARM: dts: da850: Add node for LEGO MINDSTORMS EV3 Battery

Message ID 1491944723-32174-4-git-send-email-david@lechnology.com (mailing list archive)
State New, archived
Headers show

Commit Message

David Lechner April 11, 2017, 9:05 p.m. UTC 
This adds a new node to the LEGO MINDSTORMS EV3 device tree for the battery.

Signed-off-by: David Lechner <david@lechnology.com>
---
 arch/arm/boot/dts/da850-lego-ev3.dts | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

Comments

Sekhar Nori April 14, 2017, 12:12 p.m. UTC | #1 
Hi David,

On Wednesday 12 April 2017 02:35 AM, David Lechner wrote:
> This adds a new node to the LEGO MINDSTORMS EV3 device tree for the battery.
> 
> Signed-off-by: David Lechner <david@lechnology.com>

I am done sending my pull requests for v4.12. So I added this to my
queue for v4.13

Thanks,
Sekhar
diff mbox

Patch

diff --git a/arch/arm/boot/dts/da850-lego-ev3.dts b/arch/arm/boot/dts/da850-lego-ev3.dts
index c20580a..99cd561 100644
--- a/arch/arm/boot/dts/da850-lego-ev3.dts
+++ b/arch/arm/boot/dts/da850-lego-ev3.dts
@@ -172,6 +172,18 @@ 
 		gpio = <&gpio 111 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};
+
+	/*
+	 * The EV3 can use 6-AA batteries or a rechargeable Li-ion battery pack.
+	 */
+	battery {
+		pinctrl-names = "default";
+		pintctrl-0 = <&battery_pins>;
+		compatible = "lego,ev3-battery";
+		io-channels = <&adc 4>, <&adc 3>;
+		io-channel-names = "voltage", "current";
+		rechargeable-gpios = <&gpio 136 GPIO_ACTIVE_LOW>;
+	};
 };
 
 &pmx_core {
@@ -235,6 +247,15 @@ 
 			0x34 0x00000008 0x0000000f
 		>;
 	};
+
+	battery_pins: pinmux_battery_pins {
+		pinctrl-single,bits = <
+			/* GP0[6] */
+			0x04 0x00000080 0x000000f0
+			/* GP8[8] */
+			0x4c 0x00000080 0x000000f0
+		>;
+	};
 };
 
 &pinconf {
@@ -349,6 +370,13 @@ 
 
 &gpio {
 	status = "okay";
+
+	/* Don't pull down battery voltage adc io channel */
+	batt_volt_en {
+		gpio-hog;
+		gpios = <6 GPIO_ACTIVE_HIGH>;
+		output-low;
+	};
 };
 
 &usb_phy {