linux-kernel - [RFC PATCH v3 5/5] arm64: dts: mediatek: mt8173-elm-hana: Add G2touch G7500 touchscreen

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Message-ID: <20231128084236.157152-6-wenst@chromium.org>
Date:   Tue, 28 Nov 2023 16:42:34 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Wolfram Sang <wsa@...nel.org>,
        Benson Leung <bleung@...omium.org>,
        Tzung-Bi Shih <tzungbi@...nel.org>
Cc:     Chen-Yu Tsai <wenst@...omium.org>, chrome-platform@...ts.linux.dev,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>,
        Johan Hovold <johan@...nel.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        andriy.shevchenko@...ux.intel.com, Jiri Kosina <jikos@...nel.org>,
        linus.walleij@...aro.org, broonie@...nel.org,
        gregkh@...uxfoundation.org, hdegoede@...hat.com,
        james.clark@....com, james@...iv.tech, keescook@...omium.org,
        rafael@...nel.org, tglx@...utronix.de,
        Jeff LaBundy <jeff@...undy.com>, linux-input@...r.kernel.org,
        linux-i2c@...r.kernel.org
Subject: [RFC PATCH v3 5/5] arm64: dts: mediatek: mt8173-elm-hana: Add G2touch G7500 touchscreen

This introduces yet another second-source touchscreen found on Hana.
This is a G2touch G7500 touchscreen, which is compatible with HID over
I2C.

Add a device node for it. In keeping with the new scheme for second
source components, mark it as "failed-needs-probe".

Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
---
Changes since v2:
- Drop class from status
---
 arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi b/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
index 1d68bc6834e4..216d8b43be05 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
@@ -31,6 +31,15 @@ touchscreen3: touchscreen@20 {
 		interrupts = <88 IRQ_TYPE_LEVEL_LOW>;
 		status = "fail-needs-probe";
 	};
+
+	touchscreen4: touchscreen@40 {
+		compatible = "hid-over-i2c";
+		reg = <0x40>;
+		hid-descr-addr = <0x0001>;
+		interrupt-parent = <&pio>;
+		interrupts = <88 IRQ_TYPE_LEVEL_LOW>;
+		status = "fail-needs-probe";
+	};
 };
 
 &i2c4 {
-- 
2.43.0.rc1.413.gea7ed67945-goog