This adds the MPU-3050 gyroscope and the KXSD9 accelerometer to
the Qualcomm APQ8060 Dragonboard. The KXSD9 is mounted beyond the
MPU-3050 and appear as a subdevice beyond it. We set up the
required GPIO and interrupt lines to make the devices work.
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
ChangeLog v3->v4:
- Use interrupts-extended
- Add Bjorn's ACK.
ChangeLog v2->v3:
- Move the interrupt to the pm8058 alias to reflect the two patches
properly specifying the PMIC as interrupt parent.
ChangeLog v1->v2:
- Use the new I2C mux gate bindings from Peter Rosin (merged to
the I2C subsystem)
---
arch/arm/boot/dts/qcom-apq8060-dragonboard.dts | 52 ++++++++++++++++++++++++++
1 file changed, 52 insertions(+)
diff --git a/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts b/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts
index ea660ffa03ea..39d9e6ddefed 100644
--- a/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts
+++ b/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts
@@ -220,6 +220,14 @@
function = "ebi2";
};
};
+
+ /* Interrupt line for the KXSD9 accelerometer */
+ dragon_kxsd9_gpios: kxsd9 {
+ irq {
+ pins = "gpio57"; /* IRQ line */
+ bias-pull-up;
+ };
+ };
};
qcom,ssbi@500000 {
@@ -272,6 +280,15 @@
power-source = <PM8058_GPIO_S3>;
};
};
+ dragon_mpu3050_gpios: mpu3050-gpios {
+ pinconf {
+ pins = "gpio17";
+ function = "normal";
+ input-enable;
+ bias-disable;
+ power-source = <PM8058_GPIO_S3>;
+ };
+ };
dragon_sdcc3_gpios: sdcc3-gpios {
pinconf {
pins = "gpio22";
@@ -389,6 +406,41 @@
vddd-supply = <&pm8058_lvs0>; // 1.8V
vdda-supply = <&pm8058_l14>; // 2.85V
};
+ mpu3050@68 {
+ compatible = "invensense,mpu3050";
+ reg = <0x68>;
+ /*
+ * GPIO17 has interrupt 208 on the
+ * PM8058, it is pulled high by a 10k
+ * resistor to VLOGIC so needs to be
+ * active low/falling edge.
+ */
+ interrupts-extended = <&pm8058 208 IRQ_TYPE_EDGE_FALLING>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&dragon_mpu3050_gpios>;
+ vlogic-supply = <&pm8058_lvs0>; // 1.8V
+ vdd-supply = <&pm8058_l14>; // 2.85V
+
+ /*
+ * The MPU-3050 acts as a hub for the
+ * accelerometer.
+ */
+ i2c-gate {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ kxsd9@18 {
+ compatible = "kionix,kxsd9";
+ reg = <0x18>;
+ interrupt-parent = <&tlmm>;
+ interrupts = <57 IRQ_TYPE_EDGE_FALLING>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&dragon_kxsd9_gpios>;
+ iovdd-supply = <&pm8058_lvs0>; // 1.8V
+ vdd-supply = <&pm8058_l14>; // 2.85V
+ };
+ };
+ };
};
};
--
2.7.4
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