From 0370911565869384f19b35ea9e71ee7a57b48a33 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Tue, 12 Aug 2025 17:01:34 +0800 Subject: [PATCH] arm64: dts: mediatek: mt8186-tentacruel: Fix touchscreen model The touchscreen controller used with the original Krabby design is the Elan eKTH6918, which is in the same family as eKTH6915, but supporting a larger screen size with more sense lines. OTOH, the touchscreen controller that actually shipped on the Tentacruel devices is the Elan eKTH6A12NAY. A compatible string was added for it specifically because it has different power sequencing timings. Fix up the touchscreen nodes for both these. This also includes adding a previously missing reset line. Also add "no-reset-on-power-off" since the power is always on, and putting it in reset would consume more power. Fixes: 8855d01fb81f ("arm64: dts: mediatek: Add MT8186 Krabby platform based Tentacruel / Tentacool") Signed-off-by: Chen-Yu Tsai Link: https://lore.kernel.org/r/20250812090135.3310374-1-wenst@chromium.org Signed-off-by: Matthias Brugger --- arch/arm64/boot/dts/mediatek/mt8186-corsola-krabby.dtsi | 8 ++++---- .../dts/mediatek/mt8186-corsola-tentacruel-sku262144.dts | 4 ++++ 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/mediatek/mt8186-corsola-krabby.dtsi b/arch/arm64/boot/dts/mediatek/mt8186-corsola-krabby.dtsi index 7c971198fa956..72a2a2bff0a93 100644 --- a/arch/arm64/boot/dts/mediatek/mt8186-corsola-krabby.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8186-corsola-krabby.dtsi @@ -71,14 +71,14 @@ i2c-scl-internal-delay-ns = <10000>; touchscreen: touchscreen@10 { - compatible = "hid-over-i2c"; + compatible = "elan,ekth6915"; reg = <0x10>; interrupts-extended = <&pio 12 IRQ_TYPE_LEVEL_LOW>; pinctrl-names = "default"; pinctrl-0 = <&touchscreen_pins>; - post-power-on-delay-ms = <10>; - hid-descr-addr = <0x0001>; - vdd-supply = <&pp3300_s3>; + reset-gpios = <&pio 60 GPIO_ACTIVE_LOW>; + vcc33-supply = <&pp3300_s3>; + no-reset-on-power-off; }; }; diff --git a/arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacruel-sku262144.dts b/arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacruel-sku262144.dts index 26d3451a5e47c..24d9ede63eaa2 100644 --- a/arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacruel-sku262144.dts +++ b/arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacruel-sku262144.dts @@ -42,3 +42,7 @@ CROS_STD_MAIN_KEYMAP >; }; + +&touchscreen { + compatible = "elan,ekth6a12nay"; +}; -- 2.47.3