From patchwork Tue Dec 2 14:49:25 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jianqun Xu X-Patchwork-Id: 5420581 Return-Path: X-Original-To: patchwork-linux-rockchip@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 D8FCF9F1CD for ; Tue, 2 Dec 2014 14:50:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id F0BE62028D for ; Tue, 2 Dec 2014 14:50:55 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 174CD2016C for ; Tue, 2 Dec 2014 14:50:55 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Xvon0-00068y-Mg; Tue, 02 Dec 2014 14:50:54 +0000 Received: from va-smtp01.263.net ([54.88.144.211]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XvomU-00050f-Ua; Tue, 02 Dec 2014 14:50:23 +0000 Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by va-smtp01.263.net (Postfix) with ESMTP id 523417F92B; Tue, 2 Dec 2014 22:49:54 +0800 (CST) X-RL-SENDER: jay.xu@rock-chips.com X-SENDER-IP: 127.0.0.1 X-LOGIN-NAME: jay.xu@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: xjq@rock-chips.com X-DNS-TYPE: 1 Received: from unknown (localhost [127.0.0.1]) by va-smtp01.263.net (Postfix) whith SMTP id 31816WIDZG0; Tue, 02 Dec 2014 22:49:53 +0800 (CST) From: Jianqun Xu To: lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.de, jay.xu@rock-chips.com, sonnyrao@chromium.org, heiko@sntech.de Subject: [PATCH 1/2] ASoC: rockchip-i2s: dt: add an optional property "i2s_clk_out" Date: Tue, 2 Dec 2014 22:49:25 +0800 Message-Id: <1417531766-29669-2-git-send-email-jay.xu@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1417531766-29669-1-git-send-email-jay.xu@rock-chips.com> References: <1417531766-29669-1-git-send-email-jay.xu@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141202_065023_108105_FB880E49 X-CRM114-Status: UNSURE ( 5.16 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.0 (/) Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_LOW, 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 an property "i2s_clk_out", which enables to output clock to outside of rockchip SoCs. Let's make it optional since not each board needs it. Signed-off-by: Jianqun Xu Reviewed-by: Doug Anderson --- Documentation/devicetree/bindings/sound/rockchip-i2s.txt | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/sound/rockchip-i2s.txt b/Documentation/devicetree/bindings/sound/rockchip-i2s.txt index 9b82c20..c8f5ac0 100644 --- a/Documentation/devicetree/bindings/sound/rockchip-i2s.txt +++ b/Documentation/devicetree/bindings/sound/rockchip-i2s.txt @@ -22,6 +22,10 @@ Required properties: - "i2s_hclk": clock for I2S BUS - "i2s_clk" : clock for I2S controller +Optional property: +- "i2s_clk_out" : clock output to outside of chip, usally as master clock for audio + codec chip + Example for rk3288 I2S controller: i2s@ff890000 { @@ -32,6 +36,6 @@ i2s@ff890000 { #size-cells = <0>; dmas = <&pdma1 0>, <&pdma1 1>; dma-names = "tx", "rx"; - clock-names = "i2s_hclk", "i2s_clk"; - clocks = <&cru HCLK_I2S0>, <&cru SCLK_I2S0>; + clock-names = "i2s_hclk", "i2s_clk", "i2s_clk_out"; + clocks = <&cru HCLK_I2S0>, <&cru SCLK_I2S0>, <&cru SCLK_I2S0_CLKOUT>; };