diff mbox series

[RFC,v3,2/6] arm64: dts: qcom: sdm845-tama: Add Synaptics Touchscreen

Message ID 20230313-topic-tama_disp-v3-2-2b1567c039d7@linaro.org (mailing list archive)
State Accepted
Headers show
Series Sony SDM845 panel and remoteproc enablement | expand

Commit Message

Konrad Dybcio March 29, 2023, 7:41 p.m. UTC 
From: Konrad Dybcio <konrad.dybcio@somainline.org>

Add required pins and RMI4 node to the common DT and remove it
from Akatsuki, as it uses a different touch.

Since the panels are super high tech proprietary incell, they
need to be handled with very precise timings. As such the panel
driver sets up the power rails and GPIOs and the touchscreen
driver *has to* probe afterwards.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 .../dts/qcom/sdm845-sony-xperia-tama-akatsuki.dts  |  3 +
 .../boot/dts/qcom/sdm845-sony-xperia-tama.dtsi     | 68 +++++++++++++++++++++-
 2 files changed, 69 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/sdm845-sony-xperia-tama-akatsuki.dts b/arch/arm64/boot/dts/qcom/sdm845-sony-xperia-tama-akatsuki.dts
index 81cbf535cb76..5d2052a0ff69 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-sony-xperia-tama-akatsuki.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-sony-xperia-tama-akatsuki.dts
@@ -7,6 +7,9 @@ 
 
 #include "sdm845-sony-xperia-tama.dtsi"
 
+/* XZ3 uses an Atmel touchscreen instead. */
+/delete-node/ &touchscreen;
+
 / {
 	model = "Sony Xperia XZ3";
 	compatible = "sony,akatsuki-row", "qcom,sdm845";
diff --git a/arch/arm64/boot/dts/qcom/sdm845-sony-xperia-tama.dtsi b/arch/arm64/boot/dts/qcom/sdm845-sony-xperia-tama.dtsi
index 3c7d129d9d8e..8172d0c9c1a3 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-sony-xperia-tama.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-sony-xperia-tama.dtsi
@@ -402,10 +402,42 @@  &gcc {
 };
 
 &i2c5 {
-	status = "okay";
 	clock-frequency = <400000>;
+	status = "okay";
+
+	touchscreen: touchscreen@2c {
+		compatible = "syna,rmi4-i2c";
+		reg = <0x2c>;
+
+		interrupts-extended = <&tlmm 125 IRQ_TYPE_EDGE_FALLING>;
+		vdd-supply = <&vreg_l14a_1p8>;
+		/*
+		 * This is a blatant abuse of OF, but the panel driver *needs*
+		 * to probe first, as the power/gpio switching needs to be precisely
+		 * timed in order for both the display and touch panel to function properly.
+		 */
+		incell-supply = <&panel>;
+
+		syna,reset-delay-ms = <220>;
+		syna,startup-delay-ms = <1000>;
+
+		pinctrl-0 = <&ts_default>;
+		pinctrl-1 = <&ts_sleep>;
+		pinctrl-names = "default", "sleep";
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		rmi4-f01@1 {
+			reg = <0x01>;
+			syna,nosleep-mode = <1>;
+		};
 
-	/* Synaptics touchscreen @ 2c, 3c */
+		rmi4-f12@12 {
+			reg = <0x12>;
+			syna,sensor-type = <1>;
+		};
+	};
 };
 
 &i2c10 {
@@ -558,6 +590,38 @@  sde_te_active_sleep: sde-te-active-sleep-state {
 		drive-strength = <2>;
 		bias-pull-down;
 	};
+
+	ts_default: ts-default-state {
+		reset-pins {
+			pins = "gpio99";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		int-pins {
+			pins = "gpio125";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
+	ts_sleep: ts-sleep-state {
+		reset-pins {
+			pins = "gpio99";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		int-pins {
+			pins = "gpio125";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+	};
 };
 
 &uart6 {