From patchwork Wed Oct 29 05:37:36 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xudong Chen X-Patchwork-Id: 404434 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 9071F140077 for ; Wed, 29 Oct 2014 16:45:47 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754795AbaJ2Fpe (ORCPT ); Wed, 29 Oct 2014 01:45:34 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:43604 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754148AbaJ2Fpc (ORCPT ); Wed, 29 Oct 2014 01:45:32 -0400 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 984769091; Wed, 29 Oct 2014 13:40:28 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkhts07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.181.6; Wed, 29 Oct 2014 13:40:28 +0800 From: Xudong Chen To: Mark Rutland , , Matthias Brugger , Wolfram Sang CC: , Sascha Hauer , Rob Herring , Pawel Moll , Ian Campbell , Kumar Gala , Russell King , Grant Likely , Xudong Chen , Jean Delvare , Arnd Bergmann , , , , , Yingjoe Chen , Eddie Huang , Nathan Chung , YH Chen Subject: [PATCH 1/3] dt-bindings: Add I2C bindings for mt65xx/mt81xx. Date: Wed, 29 Oct 2014 13:37:36 +0800 Message-ID: <1414561058-23803-2-git-send-email-xudong.chen@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1414561058-23803-1-git-send-email-xudong.chen@mediatek.com> References: <1414561058-23803-1-git-send-email-xudong.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Add devicetree bindings for Mediatek Soc I2C driver. Signed-off-by: Xudong Chen --- .../devicetree/bindings/i2c/i2c-mt6577.txt | 37 ++++++++++++++++++++++ 1 file changed, 37 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..b4012c8 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-mt6577.txt @@ -0,0 +1,37 @@ +* 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) "mtk,mt6577-i2c", for i2c compatible with mt6577 i2c. + (b) "mtk,mt8127-i2c", for i2c compatible with mt8127 i2c. + (c) "mtk,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: clock name used in i2c driver probe + +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. + - mediatek,have-dcm: platform has DCM(hardware digital clock manager) property. + - mediatek,use-push-pull: IO 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"; + }; +