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[79.30.116.65]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39c3020d68esm2197657f8f.67.2025.04.03.09.20.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Apr 2025 09:20:26 -0700 (PDT) From: Angelo Dureghello X-Google-Original-From: Angelo Dureghello Date: Thu, 03 Apr 2025 18:19:04 +0200 Subject: [PATCH 1/3] dt-bindings: iio: adc: adi,ad7606: add SPI offload properties Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250403-wip-bl-spi-offload-ad7606-v1-1-1b00cb638b12@baylibre.com> References: <20250403-wip-bl-spi-offload-ad7606-v1-0-1b00cb638b12@baylibre.com> In-Reply-To: <20250403-wip-bl-spi-offload-ad7606-v1-0-1b00cb638b12@baylibre.com> To: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Corbet , David Lechner Cc: Michael Hennerich , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Angelo Dureghello X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1999; i=adureghello@baylibre.com; h=from:subject:message-id; bh=UfpxApW5Zv/Cbo0daRMPGTL/xp0EwZ3iApNb08LgQ24=; b=owGbwMvMwCXGf3bn1e/btlsznlZLYkh/t5XJYdMfLlHt8GeMDAnvgv/85E47JSf+5MCv+YKaE 9do15YKdJSyMIhxMciKKbLUJUaYhN4OlVJewDgbZg4rE8gQBi5OAZgIQwrDf3cV0+dh+Z0dvdND d8msS6yTZZp0c/8pUaGUH9/mboh53cHwV6KP8ced9Z3S2TlWgsH9ftrivgWVkjMKLP/IrY6zai9 jBgA= X-Developer-Key: i=adureghello@baylibre.com; a=openpgp; fpr=703CDFAD8B573EB00850E38366D1CB9419AF3953 From: Angelo Dureghello Add #trigger-source-cells property to allow the BUSY output to be used as a SPI offload trigger source to indicate when a sample is ready to be read. Macros are added to adi,ad7606.h for the cell values to help with readability since they are arbitrary values. Signed-off-by: Angelo Dureghello --- Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml | 8 ++++++++ include/dt-bindings/iio/adc/adi,ad7606.h | 9 +++++++++ 2 files changed, 17 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml index 52d3f1ce336783084d601d361779ebc766124f7a..29f12d650442b8ff2eb455306ce59a0e87867ddd 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml @@ -45,6 +45,14 @@ properties: "#size-cells": const: 0 + '#trigger-source-cells': + description: | + Cell indicates the output signal: 0 = BUSY, 1 = FIRSTDATA. + + For convenience, macros for these values are available in + dt-bindings/iio/adc/adi,ad7606.h. + const: 1 + # According to the datasheet, "Data is clocked in from SDI on the falling # edge of SCLK, while data is clocked out on DOUTA on the rising edge of # SCLK". Also, even if not stated textually in the datasheet, it is made diff --git a/include/dt-bindings/iio/adc/adi,ad7606.h b/include/dt-bindings/iio/adc/adi,ad7606.h new file mode 100644 index 0000000000000000000000000000000000000000..f38a6d72b6dc2d4067c07d6a5c0377e526219e5c --- /dev/null +++ b/include/dt-bindings/iio/adc/adi,ad7606.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ + +#ifndef _DT_BINDINGS_ADI_AD7606_H +#define _DT_BINDINGS_ADI_AD7606_H + +#define AD7606_TRIGGER_EVENT_BUSY 0 +#define AD7606_TRIGGER_EVENT_FRSTDATA 1 + +#endif /* _DT_BINDINGS_ADI_AD7606_H */