linux-kernel - [PATCH 1/5] dt-bindings: input: touchscreen: add bindings for focaltech,fts

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Message-Id: <20230312093249.1846993-2-joelselvaraj.oss@gmail.com>
Date:   Sun, 12 Mar 2023 04:32:45 -0500
From:   Joel Selvaraj <joelselvaraj.oss@...il.com>
To:     Caleb Connolly <caleb@...nolly.tech>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Henrik Rydberg <rydberg@...math.org>,
        Arnd Bergmann <arnd@...db.de>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Jeff LaBundy <jeff@...undy.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Markuss Broks <markuss.broks@...il.com>,
        Jean Delvare <jdelvare@...e.de>,
        Max Krummenacher <max.krummenacher@...adex.com>,
        Job Noorman <job@...rman.info>,
        Alistair Francis <alistair@...stair23.me>,
        Chris Morgan <macromorgan@...mail.com>
Cc:     linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Joel Selvaraj <joelselvaraj.oss@...il.com>
Subject: [PATCH 1/5] dt-bindings: input: touchscreen: add bindings for focaltech,fts

Add devicetree bindings for the Focaltech FTS touchscreen drivers.

Signed-off-by: Joel Selvaraj <joelselvaraj.oss@...il.com>
Signed-off-by: Caleb Connolly <caleb@...nolly.tech>
---
 .../input/touchscreen/focaltech,fts.yaml      | 81 +++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/focaltech,fts.yaml

diff --git a/Documentation/devicetree/bindings/input/touchscreen/focaltech,fts.yaml b/Documentation/devicetree/bindings/input/touchscreen/focaltech,fts.yaml
new file mode 100644
index 000000000000..07fe595cc9ed
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/focaltech,fts.yaml
@@ -0,0 +1,81 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/focaltech,fts.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Focaltech FTS I2C Touchscreen Controller
+
+maintainers:
+  - Joel Selvaraj <joelselvaraj.oss@...il.com>
+  - Caleb Connolly <caleb@...nolly.tech>
+
+allOf:
+  - $ref: touchscreen.yaml#
+
+properties:
+  compatible:
+    enum:
+      - focaltech,fts5452
+      - focaltech,fts8719
+  reg:
+    const: 0x38
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  avdd-supply:
+    description: a phandle for the regulator supplying analog power (2.6V to 3.3V).
+
+  vddio-supply:
+    description: a phandle for the regulator supplying IO power (1.8V).
+
+  focaltech,max-touch-number:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: max number of fingers supported
+    minimum: 2
+    maximum: 10
+
+  touchscreen-size-x: true
+  touchscreen-size-y: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - reset-gpios
+  - focaltech,max-touch-number
+  - touchscreen-size-x
+  - touchscreen-size-y
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    &i2c5 {
+      status="okay";
+
+      touchscreen: focaltech@38 {
+        compatible = "focaltech,fts8719";
+        reg = <0x38>;
+        interrupt-parent = <&tlmm>;
+        interrupts = <31 IRQ_TYPE_EDGE_RISING>;
+
+        avdd-supply = <&vreg_l28a_3p0>;
+        vddio-supply = <&vreg_l14a_1p8>;
+
+        pinctrl-names = "default", "sleep";
+        pinctrl-0 = <&ts_int_default &ts_reset_default>;
+        pinctrl-1 = <&ts_int_sleep &ts_reset_sleep>;
+
+        reset-gpios = <&tlmm 32 GPIO_ACTIVE_LOW>;
+
+        touchscreen-size-x = <1080>;
+        touchscreen-size-y = <2246>;
+        focaltech,max-touch-number = <10>;
+      };
+    };
-- 
2.39.2