diff options
Diffstat (limited to 'target/linux/mediatek/patches/0029-dt-bindings-Add-I2C-bindings-for-mt65xx-mt81xx.patch')
| -rw-r--r-- | target/linux/mediatek/patches/0029-dt-bindings-Add-I2C-bindings-for-mt65xx-mt81xx.patch | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches/0029-dt-bindings-Add-I2C-bindings-for-mt65xx-mt81xx.patch b/target/linux/mediatek/patches/0029-dt-bindings-Add-I2C-bindings-for-mt65xx-mt81xx.patch new file mode 100644 index 0000000..03f03fb --- /dev/null +++ b/target/linux/mediatek/patches/0029-dt-bindings-Add-I2C-bindings-for-mt65xx-mt81xx.patch @@ -0,0 +1,64 @@ +From d1447a6815913823ef5e75d70efc6f08f288ee40 Mon Sep 17 00:00:00 2001 +From: Xudong Chen <xudong.chen@mediatek.com> +Date: Wed, 6 May 2015 16:37:05 +0800 +Subject: [PATCH 29/76] dt-bindings: Add I2C bindings for mt65xx/mt81xx. + +Add devicetree bindings for Mediatek Soc I2C driver. + +Signed-off-by: Xudong Chen <xudong.chen@mediatek.com> +Signed-off-by: Eddie Huang <eddie.huang@mediatek.com> +--- + .../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 = <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"; ++ }; ++ +-- +1.7.10.4 + |