From patchwork Fri May 25 12:34:22 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Codrin Ciubotariu X-Patchwork-Id: 10427263 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 10259602D8 for ; Fri, 25 May 2018 12:35:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DF29329677 for ; Fri, 25 May 2018 12:35:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D39BF29692; Fri, 25 May 2018 12:35:15 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3902729677 for ; Fri, 25 May 2018 12:35:15 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 2C53E267673; Fri, 25 May 2018 14:35:07 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 9C637267669; Fri, 25 May 2018 14:35:04 +0200 (CEST) Received: from esa1.microchip.iphmx.com (esa1.microchip.iphmx.com [68.232.147.91]) by alsa0.perex.cz (Postfix) with ESMTP id 5F5C3267668 for ; Fri, 25 May 2018 14:35:01 +0200 (CEST) X-IronPort-AV: E=Sophos;i="5.49,440,1520924400"; d="scan'208";a="15314122" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 25 May 2018 05:35:00 -0700 Received: from rob-ult-m19940.mchp-main.com (10.10.76.4) by chn-sv-exch02.mchp-main.com (10.10.76.38) with Microsoft SMTP Server id 14.3.352.0; Fri, 25 May 2018 05:35:00 -0700 From: Codrin Ciubotariu To: , , , , , , , , , Date: Fri, 25 May 2018 15:34:22 +0300 Message-ID: <1527251668-31396-2-git-send-email-codrin.ciubotariu@microchip.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1527251668-31396-1-git-send-email-codrin.ciubotariu@microchip.com> References: <1527251668-31396-1-git-send-email-codrin.ciubotariu@microchip.com> MIME-Version: 1.0 Cc: Cristian.Birsan@microchip.com Subject: [alsa-devel] [PATCH v4 1/7] dt-bindings: clk: at91: add an I2S mux clock X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP The I2S mux clock can be used to select the I2S input clock. The available parents are the peripheral and the generated clocks. Signed-off-by: Codrin Ciubotariu --- .../devicetree/bindings/clock/at91-clock.txt | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt index 51c259a..1c46b3c 100644 --- a/Documentation/devicetree/bindings/clock/at91-clock.txt +++ b/Documentation/devicetree/bindings/clock/at91-clock.txt @@ -90,6 +90,8 @@ Required properties: "atmel,sama5d2-clk-audio-pll-pmc" at91 audio pll output on AUDIOPLLCLK that feeds the PMC and can be used by peripheral clock or generic clock + "atmel,sama5d2-clk-i2s-mux": + at91 I2S clock source selection Required properties for SCKC node: - reg : defines the IO memory reserved for the SCKC. @@ -507,3 +509,35 @@ For example: atmel,clk-output-range = <0 83000000>; }; }; + +Required properties for I2S mux clocks: +- #size-cells : shall be 0 (reg is used to encode I2S bus id). +- #address-cells : shall be 1 (reg is used to encode I2S bus id). +- name: device tree node describing a specific mux clock. + * #clock-cells : from common clock binding; shall be set to 0. + * clocks : shall be the mux clock parent phandles; shall be 2 phandles: + peripheral and generated clock; the first phandle shall belong to the + peripheral clock and the second one shall belong to the generated + clock; "clock-indices" property can be user to specify + the correct order. + * reg: I2S bus id of the corresponding mux clock. + e.g. reg = <0>; for i2s0, reg = <1>; for i2s1 + +For example: + i2s_clkmux { + compatible = "atmel,sama5d2-clk-i2s-mux"; + #address-cells = <1>; + #size-cells = <0>; + + i2s0muxck: i2s0_muxclk { + clocks = <&i2s0_clk>, <&i2s0_gclk>; + #clock-cells = <0>; + reg = <0>; + }; + + i2s1muxck: i2s1_muxclk { + clocks = <&i2s1_clk>, <&i2s1_gclk>; + #clock-cells = <0>; + reg = <1>; + }; + };