From patchwork Fri Jul 4 09:55:20 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Martinez Canillas X-Patchwork-Id: 4479541 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 5D2249F36A for ; Fri, 4 Jul 2014 09:57:42 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 837372041B for ; Fri, 4 Jul 2014 09:57:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 980342025B for ; Fri, 4 Jul 2014 09:57:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030395AbaGDJ4p (ORCPT ); Fri, 4 Jul 2014 05:56:45 -0400 Received: from bhuna.collabora.co.uk ([93.93.135.160]:38191 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030392AbaGDJ4j (ORCPT ); Fri, 4 Jul 2014 05:56:39 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: javier) with ESMTPSA id C2BB5602741 From: Javier Martinez Canillas To: Lee Jones Cc: Mark Brown , Mike Turquette , Liam Girdwood , Alessandro Zummo , Kukjin Kim , Doug Anderson , Olof Johansson , Tomeu Vizoso , Krzysztof Kozlowski , Yadwinder Singh Brar , Tushar Behera , Andreas Farber , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Javier Martinez Canillas Subject: [PATCH v6 21/23] clk: max77802: Add DT binding documentation Date: Fri, 4 Jul 2014 11:55:20 +0200 Message-Id: <1404467722-26687-22-git-send-email-javier.martinez@collabora.co.uk> X-Mailer: git-send-email 2.0.0.rc2 In-Reply-To: <1404467722-26687-1-git-send-email-javier.martinez@collabora.co.uk> References: <1404467722-26687-1-git-send-email-javier.martinez@collabora.co.uk> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add Device Tree binding documentation for the clocks outputs in the Maxim 77802 Power Management IC. Signed-off-by: Javier Martinez Canillas --- Changes since v5: - Fix typo error in DT binding. Suggested by Andreas Farber. - Add "clock-output-names" as an optional property since now is supported. Changes since v4: None Changes since v3: - Don't use the same clock driver name in clock-names since it's a consumer concept and most probably will be different. Suggested by Doug Anderson. Changes since v2: - Split the DT binding documentation in a separate patch --- .../devicetree/bindings/clock/maxim,max77802.txt | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/maxim,max77802.txt diff --git a/Documentation/devicetree/bindings/clock/maxim,max77802.txt b/Documentation/devicetree/bindings/clock/maxim,max77802.txt new file mode 100644 index 0000000..c6dc783 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/maxim,max77802.txt @@ -0,0 +1,44 @@ +Binding for Maxim MAX77802 32k clock generator block + +This is a part of device tree bindings of MAX77802 multi-function device. +More information can be found in bindings/mfd/max77802.txt file. + +The MAX77802 contains two 32.768khz clock outputs that can be controlled +(gated/ungated) over I2C. + +Following properties should be present in main device node of the MFD chip. + +Required properties: +- #clock-cells: From common clock binding; shall be set to 1. + +Optional properties: +- clock-output-names: From common clock binding. + +Each clock is assigned an identifier and client nodes can use this identifier +to specify the clock which they consume. Following indices are allowed: + - 0: 32khz_ap clock, + - 1: 32khz_cp clock. + +Clocks are defined as preprocessor macros in dt-bindings/clock/maxim,max77802.h +header and can be used in device tree sources. + +Example: Node of the MFD chip + + max77802: max77802@09 { + compatible = "maxim,max77802"; + interrupt-parent = <&wakeup_eint>; + interrupts = <26 0>; + reg = <0x09>; + #clock-cells = <1>; + + /* ... */ + }; + +Example: Clock consumer node + + foo@0 { + compatible = "bar,foo"; + /* ... */ + clock-names = "my-clock"; + clocks = <&max77802 MAX77802_CLK_32K_AP>; + };