From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xudong Chen Subject: [PATCH v3 1/2] dt-bindings: Add I2C bindings for mt65xx/mt81xx. Date: Mon, 24 Nov 2014 17:38:47 +0800 Message-ID: <1416821928-11453-2-git-send-email-xudong.chen@mediatek.com> References: <1416821928-11453-1-git-send-email-xudong.chen@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1416821928-11453-1-git-send-email-xudong.chen@mediatek.com> Sender: linux-kernel-owner@vger.kernel.org To: Mark Rutland , Matthias Brugger , Wolfram Sang Cc: srv_heupstream@mediatek.com, Sascha Hauer , Rob Herring , Pawel Moll , Ian Campbell , Kumar Gala , Russell King , Grant Likely , Xudong Chen , Jean Delvare , Arnd Bergmann , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org, Yingjoe Chen , Eddie Huang , Nathan Chung , YH Chen List-Id: devicetree@vger.kernel.org Add devicetree bindings for Mediatek Soc I2C driver. Signed-off-by: Xudong Chen Change-Id: Iaaba1e8420abfbfb503501310de04ee25ae72e18 --- .../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"; + }; + -- 1.8.1.1.dirty