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Sat, 10 Oct 2026 23:29:10 +0000 Received: from KUYPR01MB8186.apcprd01.prod.exchangelabs.com ([fe80::fe2d:77d4:b78a:358a]) by KUYPR01MB8186.apcprd01.prod.exchangelabs.com ([fe80::fe2d:77d4:b78a:358a%4]) with mapi id 15.21.0496.018; Sat, 10 Oct 2026 23:29:10 +0000 From: Miotsuki Mizuno To: "heiko@sntech.de" CC: "conor+dt@kernel.org" , "devicetree@vger.kernel.org" , "krzk+dt@kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "linux-rockchip@lists.infradead.org" , "robh@kernel.org" Subject: [PATCH] arm64: dts: rockchip: Enable touchscreen on UNIHIKER M10 V1.2 Thread-Topic: [PATCH] arm64: dts: rockchip: Enable touchscreen on UNIHIKER M10 V1.2 Thread-Index: AQHdWQ8miAWIfw64yEyob26Vhs9d7A== Date: Sat, 10 Oct 2026 23:29:10 +0000 Message-ID: <20261010232908.26968-1-founder@crepuse.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: mx.microsoft.com 1; dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=crepuse.com; 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X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Describe the onboard NS2009 resistive touchscreen at I2C2 address 0x48. Use the tested inverted Y direction and raw Z1 contact threshold of 150. Retain the native 12-bit ADC coordinate range. The I2C2 controller is enabled by a separate board preparation patch. This device node is independent of the display binding and DTS changes, and depends on the separately submitted NS2009 binding and driver. Link: https://lore.kernel.org/r/20261009144729.85832-1-founder@crepuse.com Signed-off-by: Mizuno Miotsuki --- This board patch depends on the common I2C2 preparation commit and the separately submitted NS2009 vendor-prefix/binding series. Those NS2009 dependencies are not in the pinned Rockchip tree; only the validation branch imports them unchanged. The display series has no such dependency. The prerequisite I2C2 board patch was submitted separately: https://lore.kernel.org/r/20261010232831.26908-1-founder@crepuse.com Validation: native DTS build passed, but native dt-validate -m reports an unmatched NS2009 compatible. With submitted dependencies, target CHECK_DTBS=y, direct dt-validate and binding example checks passed. The exact combined DTB booted normally; the tester confirmed touch direction and operation. Capture: nine down/up pairs, 208 frames, no SYN_DROPPED, final released. One E0 ff ff invalid sample (-EIO) was recorded; this is disclosed for review of the pending NS2009 support. Deep suspend and calibrated five-point coverage are not claimed. arch/arm64/boot/dts/rockchip/rk3308-unihiker-m10-v1.2.dts | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3308-unihiker-m10-v1.2.dts b/arch/arm64/boot/dts/rockchip/rk3308-unihiker-m10-v1.2.dts index 0c03f118378a..7ae3cc8a86e0 100644 --- a/arch/arm64/boot/dts/rockchip/rk3308-unihiker-m10-v1.2.dts +++ b/arch/arm64/boot/dts/rockchip/rk3308-unihiker-m10-v1.2.dts @@ -134,6 +134,13 @@ &emmc { &i2c2 { clock-frequency = <400000>; status = "okay"; + + touchscreen@48 { + compatible = "nsiway,ns2009"; + reg = <0x48>; + touchscreen-min-pressure = <150>; + touchscreen-inverted-y; + }; }; &io_domains { base-commit: f4f7ecd2e0e8debcbab4789717cc79d570d665e3 -- 2.56.0 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip