| Qualcomm 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. |
| |
| 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>; |
| |
| }; |