From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xudong 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> References: <1414561058-23803-1-git-send-email-xudong.chen@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1414561058-23803-1-git-send-email-xudong.chen@mediatek.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Mark Rutland , arm@kernel.org, Matthias Brugger , Wolfram Sang Cc: Xudong Chen , devicetree@vger.kernel.org, Russell King , srv_heupstream@mediatek.com, Pawel Moll , Ian Campbell , YH Chen , linux-kernel@vger.kernel.org, Nathan Chung , Rob Herring , Arnd Bergmann , linux-arm-kernel@lists.infradead.org, Sascha Hauer , Kumar Gala , Grant Likely , Yingjoe Chen , Eddie Huang , Jean Delvare , linux-i2c@vger.kernel.org List-Id: devicetree@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"; + }; + -- 1.8.1.1.dirty