From patchwork Fri Nov 15 20:18:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Lechner X-Patchwork-Id: 13876785 Received: from mail-oa1-f42.google.com (mail-oa1-f42.google.com [209.85.160.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A069C1E3DCE for ; Fri, 15 Nov 2024 20:18:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731701938; cv=none; b=NvewW5lv2nuCVnCu4fgjjjJaMxMQFwqhx6RT3irOOyKKBypKTnO9tvmJRq1FrLltbDAjpAvp4zpFFglnI2h3MmpbZSjZu1xDwONCNk6BYrX1McdXBc5LSLgDBw8srd+Ae40cWM8HdLTEsGq2R7RqmmAyXrIay9qa/J0ff4rUyQ8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731701938; c=relaxed/simple; bh=wsgGx84cWBUtGa7G4wtbH/BWpIo6zEAdmqzXQ6w3/1c=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=nq2sM5ML+Czh4TyXeVR7I3MNzaXH3XS+VZ4Icbl6CVKvIm4CDYE3R6p5x5H1K/AGCLvwsivuitk8/YG3rG9WULX+obli/IzRPyNmjz/oAmb4XRY2h/4+rXKuPAwztcLqZhKDOwBfJHw38Xlz0dgh1+6cIvwawwoPkDIKYzP8JCw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=Hc2TLK+W; arc=none smtp.client-ip=209.85.160.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="Hc2TLK+W" Received: by mail-oa1-f42.google.com with SMTP id 586e51a60fabf-288a90e4394so1074948fac.0 for ; Fri, 15 Nov 2024 12:18:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1731701936; x=1732306736; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=3err676nsDhVRmrJ3FZsk1bPZcnOqEf2IqEsHND5yQ8=; b=Hc2TLK+WCyNylftJ1Ghnqidab30k6a4FIErC/STwtwJSYhYIlLKpCKr8YkU0qS25By CGd5WXUj26ThVrYTDKN39NTX3AA4AFT0DwzE7Y+i4O+XgFBJyCyJHl6JdRlMaYfunjgI kAkeN4NWU3T7DXmjHTV+sKA73+RjCFKhoy/oDliAOHuTBpqjuD4RsRKEOANE3079kGdc 14Kb5dJb6MkeZ38pimvMKEvbTal92aisGTNF8FLms533xxtKW+iJfbDtw1CiS5E73MvP 8yohe8hrel29Kd3ArwbUku/q9CFyK2pVfzAbxjNfCYwMCzUGLLVfCf3f6o44gKxdgvcO MDmQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731701936; x=1732306736; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3err676nsDhVRmrJ3FZsk1bPZcnOqEf2IqEsHND5yQ8=; b=wLq/XGbR1qyBMfyvXHX4Zw3dInWUde5IIKWBGHq9wmFHaNS1lmdCnD3iVoJB7VO8GB Wzib0DtnVcxBJ7LZ9KAT2Jp8dgfikZOD90G9k/uQhg0ukZLgsLH2TgtqHMxdeudlISXh EjhaDIU8Wqy3g/ABxJnxiXsWyuTimHRCfcBAgDBFvtBmsO+Yxe9JmV907RuxScam07oN 8msTO+H9ipJYeq0MzWXnz0IFW1ARdjyoBCWcHWE4AEQlbu4VidSuWlp8qT5eYLurnSOb eOGq1ibYdIKRjCp7BMbetwOQIjhCVOY+A4KRs33F5uTmEUkfLsXIfY0BUM+lOSxl0fEV A77g== X-Forwarded-Encrypted: i=1; AJvYcCWaOxj8nOsGIU5XALAOOPhA1nRtFIqJ4eb+7NeBicrT4psb8WFMz/EKigU4sYA/lMerQjuuZP8tb/8=@vger.kernel.org X-Gm-Message-State: AOJu0YyPmaHFcWZ7X95eGyyDRGY1ZVr2JMj5XDNlgLDTMQdb9oxnBRZz VsU0BsZVK50J/ZmfqnS9tr/sfVnIxKob87ESnJdljgOTuKq42MYc0t9pLlXNmbo= X-Google-Smtp-Source: AGHT+IFslhtXy2tcMW9lG2cdKDAvgBpEw3gZ1sN7XsFjpAzVktIDpcBrd6KtQD9GxRg2iyWZ/5Xb+g== X-Received: by 2002:a05:6870:7028:b0:287:b9:349 with SMTP id 586e51a60fabf-2962e20d981mr3793513fac.36.1731701935768; Fri, 15 Nov 2024 12:18:55 -0800 (PST) Received: from [127.0.1.1] (ip98-183-112-25.ok.ok.cox.net. [98.183.112.25]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-71a780ea62esm748978a34.5.2024.11.15.12.18.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Nov 2024 12:18:54 -0800 (PST) From: David Lechner Date: Fri, 15 Nov 2024 14:18:43 -0600 Subject: [PATCH v5 04/16] spi: dt-bindings: add PWM SPI offload trigger Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241115-dlech-mainline-spi-engine-offload-2-v5-4-bea815bd5ea5@baylibre.com> References: <20241115-dlech-mainline-spi-engine-offload-2-v5-0-bea815bd5ea5@baylibre.com> In-Reply-To: <20241115-dlech-mainline-spi-engine-offload-2-v5-0-bea815bd5ea5@baylibre.com> To: Mark Brown , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , =?utf-8?q?Nuno_S=C3=A1?= Cc: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Michael Hennerich , Lars-Peter Clausen , David Jander , Martin Sperl , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-pwm@vger.kernel.org, David Lechner X-Mailer: b4 0.14.1 Add a new binding for using a PWM signal as a trigger for SPI offloads. Signed-off-by: David Lechner --- v5 changes: * Add MAINTAINERS entry v4 changes: new patch in v4 --- .../devicetree/bindings/spi/trigger-pwm.yaml | 39 ++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 40 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/trigger-pwm.yaml b/Documentation/devicetree/bindings/spi/trigger-pwm.yaml new file mode 100644 index 000000000000..987638aa4732 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/trigger-pwm.yaml @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spi/trigger-pwm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic SPI offload trigger using PWM + +description: Remaps a PWM channel as a trigger source. + +maintainers: + - David Lechner + +$ref: /schemas/spi/trigger-source.yaml# + +properties: + compatible: + const: trigger-pwm + + '#trigger-source-cells': + const: 0 + + pwms: + maxItems: 1 + +required: + - compatible + - '#trigger-source-cells' + - pwms + +additionalProperties: false + +examples: + - | + trigger { + compatible = "trigger-pwm"; + #trigger-source-cells = <0>; + pwms = <&pwm 0 1000000 0>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 91a4a7eb6194..a43532a1edde 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -22021,6 +22021,7 @@ F: include/linux/mtd/spi-nor.h SPI OFFLOAD R: David Lechner +F: Documentation/devicetree/bindings/spi/trigger-pwm.yaml F: Documentation/devicetree/bindings/spi/trigger-source.yaml F: drivers/spi/spi-offload.c F: include/linux/spi/spi-offload.h