From patchwork Mon May 18 16:40:07 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eddie Huang X-Patchwork-Id: 473518 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 0F2A614012C for ; Tue, 19 May 2015 02:40:48 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932256AbbERQkn (ORCPT ); Mon, 18 May 2015 12:40:43 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:58094 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S932321AbbERQkk (ORCPT ); Mon, 18 May 2015 12:40:40 -0400 X-Listener-Flag: 11101 Received: from mtkhts09.mediatek.inc [(172.21.101.70)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1131991730; Tue, 19 May 2015 00:40:38 +0800 Received: from mtkslt208.mediatek.inc (10.21.15.95) by mtkhts09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.181.6; Tue, 19 May 2015 00:40:36 +0800 From: Eddie Huang To: Wolfram Sang CC: , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Matthias Brugger , Xudong Chen , Liguo Zhang , , , , , , Sascha Hauer , Eddie Huang Subject: [PATCH v8 1/3] dt-bindings: Add I2C bindings for mt65xx/mt81xx. Date: Tue, 19 May 2015 00:40:07 +0800 Message-ID: <1431967209-5261-2-git-send-email-eddie.huang@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1431967209-5261-1-git-send-email-eddie.huang@mediatek.com> References: <1431967209-5261-1-git-send-email-eddie.huang@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 From: Xudong Chen Add devicetree bindings for Mediatek Soc I2C driver. Signed-off-by: Xudong Chen Signed-off-by: Eddie Huang Acked-by: Sascha Hauer --- .../devicetree/bindings/i2c/i2c-mt6577.txt | 41 ++++++++++++++++++++++ 1 file changed, 41 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..0ce6fa3 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-mt6577.txt @@ -0,0 +1,41 @@ +* 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. + (e) "mediatek,mt8173-i2c", for i2c compatible with mt8173 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 = <400000>; + mediatek,have-pmic; + clock-div = <16>; + clocks = <&i2c0_ck>, <&ap_dma_ck>; + clock-names = "main", "dma"; + }; +