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Tue, 22 Jul 2025 03:37:16 -0700 (PDT) Received: from localhost.localdomain ([2001:b07:6474:ebbf:2bba:d7b0:8e79:c982]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-aec6ca310e2sm844568766b.79.2025.07.22.03.37.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Jul 2025 03:37:16 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: linux-amarula@amarulasolutions.com, Dario Binacchi , Conor Dooley , Dmitry Torokhov , Fabio Estevam , Haibo Chen , Krzysztof Kozlowski , Pengutronix Kernel Team , Rob Herring , Sascha Hauer , Shawn Guo , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-input@vger.kernel.org Subject: [PATCH 2/4] dt-bindings: input: touchscreen: fsl,imx6ul-tsc: add fsl,glitch-threshold Date: Tue, 22 Jul 2025 12:36:16 +0200 Message-ID: <20250722103706.3440777-3-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250722103706.3440777-1-dario.binacchi@amarulasolutions.com> References: <20250722103706.3440777-1-dario.binacchi@amarulasolutions.com> Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add support for glitch threshold configuration. A detected signal is valid only if it lasts longer than the set threshold; otherwise, it is regarded as a glitch. Signed-off-by: Dario Binacchi --- .../input/touchscreen/fsl,imx6ul-tsc.yaml | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml b/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml index 678756ad0f92..2fee2940213f 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml +++ b/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml @@ -62,6 +62,23 @@ properties: description: Number of data samples which are averaged for each read. enum: [ 1, 4, 8, 16, 32 ] + fsl,glitch-threshold: + $ref: /schemas/types.yaml#/definitions/uint32 + default: 0 + enum: [ 0, 1, 2, 3 ] + description: | + Indicates the glitch threshold. The threshold is defined by number + of clock cycles. A detect signal is only valid if it is exist longer + than threshold; otherwise, it is regarded as a glitch. + 0: Normal function: 8191 clock cycles + Low power mode: 9 clock cycles + 1: Normal function: 4095 clock cycles + Low power mode: 7 clock cycles + 2: Normal function: 2047 clock cycles + Low power mode: 5 clock cycles + 3: Normal function: 1023 clock cycles + Low power mode: 3 clock cycles + required: - compatible - reg @@ -94,4 +111,5 @@ examples: measure-delay-time = <0xfff>; pre-charge-time = <0xffff>; touchscreen-average-samples = <32>; + fsl,glitch-threshold = <2>; }; -- 2.43.0