arm64: dts: qcom: msm8916-huawei-g7: Add touchscreen

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>
Link: https://lore.kernel.org/r/20210514104328.18756-2-stephan@gerhold.net
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts b/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts
index d67aa7d..f928179 100644 (file)
--- 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 @@
        };
 };
 
+&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 @@
 
        l16 {
                regulator-min-microvolt = <1800000>;
-               regulator-max-microvolt = <3300000>;
+               regulator-max-microvolt = <1800000>;
        };
 
        l17 {
@@ -269,6 +302,14 @@
                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";
                function = "gpio";