[PATCH 2/5] arm64: dts: qcom: msm8916-huawei-g7: Add touchscreen

Stephan Gerhold
2021-05-14T10:47:05Z

The Huawei Ascend G7 has a Synaptics "C199HW-006" touchscreen,
supplied by pm8916_l17 and pm8916_l16. Add it to the device tree
and reduce the maximum allowed voltage for pm8916_l16 to 1.8V since
we really should not use more for an I/O supply.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
---
.../arm64/boot/dts/qcom/msm8916-huawei-g7.dts | 43 ++++++++++++++++++-
1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts b/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts
index d67aa7dd4a21..f928179f9ded 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts
@@ -6,6 +6,7 @@
#include "msm8916-pm8916.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/leds/common.h>

/*
@@ -84,6 +85,38 @@ usb_id: usb-id {
};
};

+&blsp_i2c5 {
+ status = "okay";
+
+ rmi4@70 {
+ compatible = "syna,rmi4-i2c";
+ reg = <0x70>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ interrupt-parent = <&msmgpio>;
+ interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+
+ vdd-supply = <&pm8916_l17>;
+ vio-supply = <&pm8916_l16>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&ts_irq_default>;
+
+ syna,startup-delay-ms = <100>;
+
+ rmi4-f01@1 {
+ reg = <0x1>;
+ syna,nosleep-mode = <1>; /* Allow sleeping */
+ };
+
+ rmi4-f11@11 {
+ reg = <0x11>;
+ syna,sensor-type = <1>; /* Touchscreen */
+ };
+ };
+};
+
&blsp1_uart2 {
status = "okay";
};
@@ -230,7 +263,7 @@ l15 {

l16 {
regulator-min-microvolt = <1800000>;
- regulator-max-microvolt = <3300000>;
+ regulator-max-microvolt = <1800000>;
};

l17 {
@@ -269,6 +302,14 @@ sdhc2_cd_default: sdhc2-cd-default {
bias-disable;
};

+ ts_irq_default: ts-irq-default {
+ pins = "gpio13";
+ function = "gpio";
+
+ drive-strength = <2>;
+ bias-disable;
+ };
+
usb_id_default: usb-id-default {
pins = "gpio117";