diff --git a/bindings/i2c/i2c-msm-v2.txt b/bindings/i2c/i2c-msm-v2.txt new file mode 100644 index 000000000000..7c0ec7dba150 --- /dev/null +++ b/bindings/i2c/i2c-msm-v2.txt @@ -0,0 +1,59 @@ +Qualcomm Technologies, Inc. I2C controller + +Required properties: + - reg : Offset and length of the register region for the device named in + reg-names and has the same index. + - reg-names : Register region name(s) referenced in reg above + "qup_phys_addr" : Physical address of QUP register space. + - compatible : should be "qcom,i2c-msm-v2" + - interrupts : Interrupt number which correspond to the entry with the same + index in interrupt-names. + - interrupt-names: QUP core interrupt name(s) referenced in interrupts above + "qup_irq" : QUP interrupt used by the controller. + - dmas : DMA engine API's parameters for blsp. + <[phandle of the dma controller] [pipe index] [number of descriptors] + [sps_connect flags] [sps_register_event flags]>; + - dma-names : dma channel names. + - qcom,clk-freq-out : Desired I2C bus clock frequency in Hz + - qcom,clk-freq-in : Supplied core clock frequency in Hz. + - qcom,i2c-dat : specifies GPIO which corresponds to the I2C data line. + - qcom,i2c-clk : specifies GPIO which corresponds to the I2C clock line. + +Required alias: + - The desired bus-number is specified by an alias with the following format: + 'i2c{n}' where n is the bus number. + +Optional property: + - qcom,noise-rjct-scl : number of low samples on clock line to consider it low. + When missing default to 0. + - qcom,noise-rjct-sda : number of low samples on data line to consider it low. + When missing default to 0. + - qcom,disable-dma : disables DMA transfer mode. + - qcom,master-id : Master-port value used on voting for the clock path. + - qcom,high-time-clk-div : high time divider value to configure clk-ctl + register. When missing, default to the value given in driver. + - qcom,fs-clk-div: fs divider value to configure clk-ctl register. When + missing, default to the value given in driver. + +Example: + aliases { + i2c10 = &i2c_10; + }; + + i2c_10: i2c@f9966000 { + compatible = "qcom,i2c-msm-v2"; + reg-names = "qup_phys_addr", "dma_phys_addr"; + reg = <0xf9966000 0x1000>; + interrupt-names = "qup_irq"; + interrupts = <0 104 0>; + dmas = <&dma_blsp1 14 32 0x20000020 0x20>, + <&dma_blsp1 15 64 0x20000020 0x20>; + dma-names = "tx", "rx"; + qcom,clk-freq-out = <100000>; + qcom,clk-freq-in = <24000000>; + qcom,noise-rjct-scl = <0>; + qcom,noise-rjct-sda = <0>; + qcom,i2c-dat = <&tlmm 67 0x00>; + qcom,i2c-clk = <&tlmm 68 0x00>; + + };