From patchwork Fri Nov 28 18:12:23 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: naidu.tellapati@gmail.com X-Patchwork-Id: 415928 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id DCAC71401B1 for ; Sat, 29 Nov 2014 05:13:03 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751117AbaK1SND (ORCPT ); Fri, 28 Nov 2014 13:13:03 -0500 Received: from mail-wi0-f181.google.com ([209.85.212.181]:57027 "EHLO mail-wi0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751033AbaK1SNC (ORCPT ); Fri, 28 Nov 2014 13:13:02 -0500 Received: by mail-wi0-f181.google.com with SMTP id r20so11983668wiv.8 for ; Fri, 28 Nov 2014 10:13:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=rTfdcOht6fL/lAelP//Jxpea0ch4ExbALgsp46sMb1k=; b=zjM88lUj9bpP9Kk8h5M7rnUAvg+Dr6PsFNTeN0Ag+MlUid1TX4lgH4KfuzMZ71ZyEi g+msuOrB9DYliwAlPBs+gCIpYib3F+E0uPsdpsRpP3ZlFLfa/2kWuUFow5T7Ikzl9Owa tZM6EcpwqxuhRZ1fRlmLCOQ9NgmdyF5K9+lk0PWfcHCPJoqzTWWYK1w5PR+GRP6PNNQy w8W1DkQoq6Nf7CCAG0Nq/+u1T7a74wlDZvDudSxlZh62WBeEFAqN1DaxaIb/N5tFNApc YG3MkfJsUv+/4XBaRCUJSNqYZgDlgNNk59xithowVSCtEH4QVaJ2cfsKk7nXuUDVu9bh i65g== X-Received: by 10.180.101.104 with SMTP id ff8mr57596053wib.12.1417198380932; Fri, 28 Nov 2014 10:13:00 -0800 (PST) Received: from localhost.localdomain ([115.112.122.66]) by mx.google.com with ESMTPSA id fm10sm15971766wjc.43.2014.11.28.10.12.54 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Fri, 28 Nov 2014 10:13:00 -0800 (PST) From: Naidu Tellapati X-Google-Original-From: Naidu Tellapati To: thierry.reding@gmail.com, abrestic@chromium.org, gregkh@linuxfoundation.org, arnd@arndb.de, James.Hartley@imgtec.com, Ezequiel.Garcia@imgtec.com Cc: devicetree@vger.kernel.org, linux-pwm@vger.kernel.org, Arul.Ramasamy@imgtec.com, Sai.Masarapu@imgtec.com, Naidu Tellapati , Naidu Tellapati Subject: [PATCH v6 2/4] DT: pwm: Add binding document for IMG PWM DAC Date: Fri, 28 Nov 2014 23:42:23 +0530 Message-Id: <1417198345-19633-3-git-send-email-Naidu.Tellapati@gmail.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1417198345-19633-1-git-send-email-Naidu.Tellapati@gmail.com> References: <1417198345-19633-1-git-send-email-Naidu.Tellapati@gmail.com> Sender: linux-pwm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org Add binding document for IMG Pulse Width Modulator (PWM) DAC present on the Pistachio SOC. The PWM DAC has four channels. Signed-off-by: Naidu Tellapati Signed-off-by: Sai Masarapu Reviewed-by: Andrew Bresticker --- Documentation/devicetree/bindings/pwm/img-pwm.txt | 24 +++++++++++++++++++++ 1 files changed, 24 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/pwm/img-pwm.txt diff --git a/Documentation/devicetree/bindings/pwm/img-pwm.txt b/Documentation/devicetree/bindings/pwm/img-pwm.txt new file mode 100644 index 0000000..fade5f2 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/img-pwm.txt @@ -0,0 +1,24 @@ +*Imagination Technologies PWM DAC driver + +Required properties: + - compatible: Should be "img,pistachio-pwm" + - reg: Should contain physical base address and length of pwm registers. + - clocks: Must contain an entry for each entry in clock-names. + See ../clock/clock-bindings.txt for details. + - clock-names: Must include the following entries. + - pwm: PWM operating clock. + - sys: PWM system interface clock. + - #pwm-cells: Should be 2. See pwm.txt in this directory for the + description of the cells format. + - img,cr-periph: Must contain a phandle to the peripheral control + syscon node which contains PWM control registers. + +Example: + pwm: pwm@18101300 { + compatible = "img,pistachio-pwm"; + reg = <0x18101300 0x100>; + clocks = <&pwm_clk>, <&system_clk>; + clock-names = "pwm", "sys"; + #pwm-cells = <2>; + img,cr-periph = <&cr_periph>; + };