From patchwork Fri Jan 16 10:33:37 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?RWRkaWUgSHVhbmcgKOm7g+aZuuWCkSk=?= X-Patchwork-Id: 5646951 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 7623C9F357 for ; Fri, 16 Jan 2015 10:37:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 91232201EC for ; Fri, 16 Jan 2015 10:37:34 +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 C3898201C0 for ; Fri, 16 Jan 2015 10:37:33 +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 1YC4FY-00034H-AQ; Fri, 16 Jan 2015 10:35:32 +0000 Received: from [210.61.82.183] (helo=mailgw01.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YC4FA-0001kS-Vn for linux-arm-kernel@lists.infradead.org; Fri, 16 Jan 2015 10:35:10 +0000 X-Listener-Flag: 11101 Received: from mtkhts07.mediatek.inc [(172.21.101.69)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1552711305; Fri, 16 Jan 2015 18:34:44 +0800 Received: from mtkslt208.mediatek.inc (10.21.15.95) by mtkhts07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.181.6; Fri, 16 Jan 2015 18:34:42 +0800 From: Eddie Huang To: Wolfram Sang , Matthias Brugger Subject: [PATCH v4 1/2] dt-bindings: Add I2C bindings for mt65xx/mt81xx. Date: Fri, 16 Jan 2015 18:33:37 +0800 Message-ID: <1421404418-50718-2-git-send-email-eddie.huang@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1421404418-50718-1-git-send-email-eddie.huang@mediatek.com> References: <1421404418-50718-1-git-send-email-eddie.huang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150116_023509_261868_9E1BC1A5 X-CRM114-Status: UNSURE ( 9.40 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 1.3 (+) Cc: Mark Rutland , Andrew Bresticker , linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, Lee Jones , Jean Delvare , Xudong Chen , Boris BREZILLON , Arnd Bergmann , yh.chen@mediatek.com, Wei Yan , Bjorn Andersson , Uwe Kleine-Konig , Neelesh Gupta , yingjoe.chen@mediatek.com, devicetree@vger.kernel.org, Pawel Moll , Ian Campbell , Beniamino Galvani , Grant Likely , Rob Herring , Eddie Huang , linux-arm-kernel@lists.infradead.org, srv_heupstream@mediatek.com, Anders Berg , Jim Cromie , Simon Glass , Max Schwarz , Doug Anderson , Sascha Hauer , Kumar Gala X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 From: Xudong Chen Add devicetree bindings for Mediatek Soc I2C driver. Signed-off-by: Xudong Chen Signed-off-by: Eddie Huang --- .../devicetree/bindings/i2c/i2c-mt6577.txt | 40 ++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/i2c-mt6577.txt diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt6577.txt b/Documentation/devicetree/bindings/i2c/i2c-mt6577.txt new file mode 100644 index 0000000..08f86c7 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-mt6577.txt @@ -0,0 +1,40 @@ +* Mediatek's I2C controller + +The Mediatek's I2C controller is used to interface with I2C devices. + +Required properties: + - compatible: value should be either of the following. + (a) "mediatek,mt6577-i2c", for i2c compatible with mt6577 i2c. + (b) "mediatek,mt6589-i2c", for i2c compatible with mt6589 i2c. + (c) "mediatek,mt8127-i2c", for i2c compatible with mt8127 i2c. + (d) "mediatek,mt8135-i2c", for i2c compatible with mt8135 i2c. + - reg: physical base address of the controller and dma base, length of memory + mapped region. + - interrupts: interrupt number to the cpu. + - clock-div: the fixed value for frequency divider of clock source in i2c + module. Each IC may be different. + - clocks: clock name from clock manager + - clock-names: Must include "main" and "dma", if enable have-pmic need include + "pmic" extra. + +Optional properties: + - clock-frequency: Frequency in Hz of the bus when transfer, the default value + is 100000. + - mediatek,have-pmic: platform can control i2c form special pmic side. + Only mt6589 and mt8135 support this feature. + - mediatek,use-push-pull: IO config use push-pull mode. + +Example: + + i2c0: i2c@1100d000 { + compatible = "mediatek,mt6577-i2c"; + reg = <0x1100d000 0x70>, + <0x11000300 0x80>; + interrupts = ; + clock-frequency = <100000>; + mediatek,have-pmic; + clock-div = <16>; + clocks = <&i2c0_ck>, <&ap_dma_ck>; + clock-names = "main", "dma"; + }; +