From patchwork Tue Mar 21 20:48:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rick Altherr X-Patchwork-Id: 741744 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3vnlK55tmCz9s7b for ; Wed, 22 Mar 2017 07:48:41 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.b="dMgrnN5B"; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 3vnlK53bKfzDqYB for ; Wed, 22 Mar 2017 07:48:41 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.b="dMgrnN5B"; dkim-atps=neutral X-Original-To: openbmc@lists.ozlabs.org Delivered-To: openbmc@lists.ozlabs.org Received: from mail-pf0-x22a.google.com (mail-pf0-x22a.google.com [IPv6:2607:f8b0:400e:c00::22a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3vnlK04JwlzDq7c for ; Wed, 22 Mar 2017 07:48:36 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.b="dMgrnN5B"; dkim-atps=neutral Received: by mail-pf0-x22a.google.com with SMTP id 20so36729648pfk.2 for ; Tue, 21 Mar 2017 13:48:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=9m8mlVGrWSaULzYhiFwm4OlGVeWNloaM6yi8eEM8FE8=; b=dMgrnN5BqjJm8gPuZUlSv2Bo1nDqlDoZuixLyZkZ3buXNXZSCfYncQOuDT1CBhUJaZ flacpAxqpiLdMTvd6cEW47SSYhX9s4UmQ3FpJi6aU1C+hHrzkC4DbkKfW3HIqybRvMIZ jmPRtLdw1Xl4l5TpU0bj15TiOSB7CdngzDP5QvrgxGswlQ/lUzESC4mnCO84Ibd2vQlL J1pw6WmjpFWKxuOx/ymMWjhYHm71hMlw5ZwmFQBx+C5nfCMkfiAC5mAn4At3kItm003Z 9vvHeX27u2+Y8aui90HOvVOy2Krib5acV7KGMcoQitRXUYkutLAmjOQxPRk+7RgYfXot sjfg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=9m8mlVGrWSaULzYhiFwm4OlGVeWNloaM6yi8eEM8FE8=; b=GhmNta+KRYTCA+vkfodg7hMgJaKmANc1urODVeqUzgg+ggAIHL3k/UiDcfAvOH2KAv G30Z4OCIP44kxummOh9s5xd9JiU1qYBCafzx3Dw+1wEBYE1q0b2SMjuQwVps6fBxy6IJ 9K6tuM22uH4MEoTJQKd/uWNIdgKtzawhrIPp1w9Kagt1j4V/RCi51OS7hT/UFAvoxAZS nSX1zRh4wdHfHZaIdVEUCJtouDnBxOXCy++u+mbP3RLoJkEe21YVmuGWj+KZcMfzgjsJ 0x5InjUJ+PNo9PRD83zaOYbr1yDqLtpkuTVFNuE/q9mXxz9pC0LOzVeAS3ikjRi+BSJd NE7w== X-Gm-Message-State: AFeK/H0E7zlDvfrJYx9jEsx6vzZjvkmSrf3J9prHkEeNmfTi/dNuzsZsSoCkdTBBn1U7Yvan X-Received: by 10.84.210.167 with SMTP id a36mr50702712pli.40.1490129311937; Tue, 21 Mar 2017 13:48:31 -0700 (PDT) Received: from raltherr-linux.svl.corp.google.com ([100.123.242.49]) by smtp.gmail.com with ESMTPSA id c22sm41622939pgn.43.2017.03.21.13.48.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 21 Mar 2017 13:48:30 -0700 (PDT) From: Rick Altherr To: openbmc@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] Documentation: dt-bindings: Document bindings for Aspeed AST2400/AST2500 ADC Date: Tue, 21 Mar 2017 13:48:27 -0700 Message-Id: <20170321204828.31303-1-raltherr@google.com> X-Mailer: git-send-email 2.12.1.500.gab5fba24ee-goog X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Lars-Peter Clausen , linux-iio@vger.kernel.org, Rob Herring , Peter Meerwald-Stadler , Hartmut Knaack , Jonathan Cameron Errors-To: openbmc-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "openbmc" Signed-off-by: Rick Altherr Acked-by: Rob Herring --- Changes in v2: - Rewritten as an IIO ADC device .../devicetree/bindings/iio/adc/aspeed_adc.txt | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt diff --git a/Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt b/Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt new file mode 100644 index 000000000000..7748c2c2ad0c --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt @@ -0,0 +1,20 @@ +Aspeed AST2400/2500 ADC + +This device is a 10-bit converter for 16 voltage channels. All inputs are +single ended. + +Required properties: +- compatible: Should be "aspeed,ast2400-adc" or "aspeed,ast2500-adc" +- reg: memory window mapping address and length +- clocks: Input clock used to derive the sample clock. Expected to be the + SoC's APB clock. +- #io-channel-cells: Must be set to <1> to indicate channels are selected + by index. + +Example: + adc@1e6e9000 { + compatible = "aspeed,ast2400-adc"; + reg = <0x1e6e9000 0xB0>; + clocks = <&clk_apb>; + #io-channel-cells = <1>; + };