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[77.236.3.190]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4954812f0d0sm7983005e9.12.2026.07.16.10.36.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Jul 2026 10:36:12 -0700 (PDT) From: =?UTF-8?q?Pawe=C5=82=20Wi=C5=9Bniewski?= To: jic23@kernel.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, ak@it-klinger.de, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 2/3] dt-bindings: iio: proximity: Add Cytron HC-SR04 Date: Thu, 16 Jul 2026 19:35:55 +0200 Message-ID: X-Mailer: git-send-email 2.47.3 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The Cytron HC-SR04 starts a ranging cycle with an active-high trigger pulse of at least 10 us and reports the acoustic round-trip time as the width of an active-high echo pulse. Add the cytron,hc-sr04 compatible and a reference to the product manual. Update the trigger GPIO description to account for the pulse durations used by the supported devices. The interface matches the two-GPIO protocol implemented by the existing SRF04 driver. Assisted-by: ChatGPT:GPT-5.6 Thinking Signed-off-by: Paweł Wiśniewski --- .../devicetree/bindings/iio/proximity/devantech-srf04.yaml | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/iio/proximity/devantech-srf04.yaml b/Documentation/devicetree/bindings/iio/proximity/devantech-srf04.yaml index ce795279839e..f4237ae612ab 100644 --- a/Documentation/devicetree/bindings/iio/proximity/devantech-srf04.yaml +++ b/Documentation/devicetree/bindings/iio/proximity/devantech-srf04.yaml @@ -4,7 +4,7 @@ $id: http://devicetree.org/schemas/iio/proximity/devantech-srf04.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# -title: Devantech SRF04 and Maxbotix mb1000 ultrasonic range finder +title: Devantech SRF04 and Maxbotix mb1000 and Cytron HC-SR04 ultrasonic range finder maintainers: - Andreas Klinger @@ -21,9 +21,12 @@ description: | https://www.maxbotix.com/documents/LV-MaxSonar-EZ_Datasheet.pdf + https://botland.com.pl/index.php?controller=attachment&id_attachment=476 + properties: compatible: enum: + - cytron,hc-sr04 - devantech,srf04 - maxbotix,mb1000 - maxbotix,mb1010 -- 2.47.3