diff options
| author | Matthias Brugger <matthias.bgg@gmail.com> | 2017-05-22 11:40:19 +0200 |
|---|---|---|
| committer | Matthias Brugger <matthias.bgg@gmail.com> | 2017-06-08 15:17:43 +0200 |
| commit | 8491899466eccc8957441b96bd55c7b6efd2fb3b (patch) | |
| tree | 37f6696c8cfd057df029a9a55d3d83c624ea4faa /Documentation/devicetree/bindings/i2c/i2c-mtk.txt | |
| parent | dt-bindings: mtk-sysirq: Correct bindings for supported SoCs (diff) | |
| download | linux-8491899466eccc8957441b96bd55c7b6efd2fb3b.tar.xz linux-8491899466eccc8957441b96bd55c7b6efd2fb3b.zip | |
dt-bindings: i2c-mt6577: Rename file to reflect bindings
The i2c-mt6577.txt actually holds the bindings for all mediatek supported i2c
controller. Change the name to i2c.mtk.txt to reflect that.
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation/devicetree/bindings/i2c/i2c-mtk.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-mtk.txt | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mtk.txt b/Documentation/devicetree/bindings/i2c/i2c-mtk.txt new file mode 100644 index 000000000000..0ce6fa3242f0 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-mtk.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 = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>; + clock-frequency = <400000>; + mediatek,have-pmic; + clock-div = <16>; + clocks = <&i2c0_ck>, <&ap_dma_ck>; + clock-names = "main", "dma"; + }; + |