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From: Fabio Estevam <festevam@gmail.com>
To: heiko@sntech.de
Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, ivan8215145640@gmail.com,
	Fabio Estevam <festevam@gmail.com>
Subject: [PATCH v2] arm64: dts: rockchip: Fix rk3566-bigtreetech-cb2 touchscreen property
Date: Tue, 21 Jul 2026 10:54:50 -0300	[thread overview]
Message-ID: <20260721135450.45286-1-festevam@gmail.com> (raw)

The TSC2007 driver uses the ti,max-rt property to specify the maximum
touch resistance, but the rk3566-bigtreetech-cb2 device tree uses the
undocumented ti,rt-thr property instead.

As a result, the configured value is ignored and the driver falls back
to its default maximum resistance value of 4095.

Replace ti,rt-thr with ti,max-rt to preserve the intended resistance
threshold of 3000.

Fixes: bfbc663d2733 ("arm64: dts: rockchip: Add BigTreeTech CB2 and Pi2")
Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
Changes since v1:
- Use the documented ti,max-rt instead. (Sashiko)

 arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2.dtsi b/arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2.dtsi
index b6cf03a7ba66..04cf285e6c2a 100644
--- a/arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2.dtsi
@@ -569,7 +569,7 @@ tft_tp: touchscreen@48 {
 		reg = <0x48>;
 		status = "okay";
 		ti,x-plate-ohms = <660>;
-		ti,rt-thr = <3000>;
+		ti,max-rt = <3000>;
 		ti,fuzzx = <32>;
 		ti,fuzzy = <16>;
 	};
-- 
2.43.0


WARNING: multiple messages have this Message-ID (diff)
From: Fabio Estevam <festevam@gmail.com>
To: heiko@sntech.de
Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, ivan8215145640@gmail.com,
	Fabio Estevam <festevam@gmail.com>
Subject: [PATCH v2] arm64: dts: rockchip: Fix rk3566-bigtreetech-cb2 touchscreen property
Date: Tue, 21 Jul 2026 10:54:50 -0300	[thread overview]
Message-ID: <20260721135450.45286-1-festevam@gmail.com> (raw)

The TSC2007 driver uses the ti,max-rt property to specify the maximum
touch resistance, but the rk3566-bigtreetech-cb2 device tree uses the
undocumented ti,rt-thr property instead.

As a result, the configured value is ignored and the driver falls back
to its default maximum resistance value of 4095.

Replace ti,rt-thr with ti,max-rt to preserve the intended resistance
threshold of 3000.

Fixes: bfbc663d2733 ("arm64: dts: rockchip: Add BigTreeTech CB2 and Pi2")
Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
Changes since v1:
- Use the documented ti,max-rt instead. (Sashiko)

 arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2.dtsi b/arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2.dtsi
index b6cf03a7ba66..04cf285e6c2a 100644
--- a/arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2.dtsi
@@ -569,7 +569,7 @@ tft_tp: touchscreen@48 {
 		reg = <0x48>;
 		status = "okay";
 		ti,x-plate-ohms = <660>;
-		ti,rt-thr = <3000>;
+		ti,max-rt = <3000>;
 		ti,fuzzx = <32>;
 		ti,fuzzy = <16>;
 	};
-- 
2.43.0


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             reply	other threads:[~2026-07-21 13:55 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-21 13:54 Fabio Estevam [this message]
2026-07-21 13:54 ` [PATCH v2] arm64: dts: rockchip: Fix rk3566-bigtreetech-cb2 touchscreen property Fabio Estevam

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