From mboxrd@z Thu Jan 1 00:00:00 1970 From: wsa@the-dreams.de (wsa at the-dreams.de) Date: Tue, 12 May 2015 14:37:09 +0200 Subject: [PATCH v7 1/3] dt-bindings: Add I2C bindings for mt65xx/mt81xx. In-Reply-To: <1430901427-65146-2-git-send-email-eddie.huang@mediatek.com> References: <1430901427-65146-1-git-send-email-eddie.huang@mediatek.com> <1430901427-65146-2-git-send-email-eddie.huang@mediatek.com> Message-ID: <20150512123709.GA4447@schokonusskuchen.bad> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, May 06, 2015 at 04:37:05PM +0800, Eddie Huang wrote: > From: Xudong Chen > > Add devicetree bindings for Mediatek Soc I2C driver. > > Signed-off-by: Xudong Chen > Signed-off-by: Eddie Huang Sascha, Uwe: Can you ack these patches if you are fine with them? Would be nice since you did quite some review and were involved in the "have-pmic" binding discussion. Thanks, Wolfram > --- > .../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 at 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 >