From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933330AbbD1Ibe (ORCPT ); Tue, 28 Apr 2015 04:31:34 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:32877 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S932786AbbD1Iba (ORCPT ); Tue, 28 Apr 2015 04:31:30 -0400 X-Listener-Flag: 11101 From: Eddie Huang To: Wolfram Sang , Matthias Brugger , Sascha Hauer CC: , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Jean Delvare , David Box , Arnd Bergmann , Doug Anderson , Max Schwarz , Boris BREZILLON , Anders Berg , Neelesh Gupta , Lee Jones , Simon Glass , Jim Cromie , Wei Yan , Bjorn Andersson , Beniamino Galvani , Xudong Chen , Liguo Zhang , , , , , , Eddie Huang Subject: [PATCH v6 1/3] dt-bindings: Add I2C bindings for mt65xx/mt81xx. Date: Tue, 28 Apr 2015 16:31:07 +0800 Message-ID: <1430209869-6631-2-git-send-email-eddie.huang@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1430209869-6631-1-git-send-email-eddie.huang@mediatek.com> References: <1430209869-6631-1-git-send-email-eddie.huang@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 | 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"; + }; + -- 1.8.1.1.dirty