| Device tree configuration for Renesas IIC (sh_mobile) driver |
| |
| Required properties: |
| - compatible : |
| - "renesas,iic-r8a73a4" (R-Mobile APE6) |
| - "renesas,iic-r8a7740" (R-Mobile A1) |
| - "renesas,iic-r8a7742" (RZ/G1H) |
| - "renesas,iic-r8a7743" (RZ/G1M) |
| - "renesas,iic-r8a7744" (RZ/G1N) |
| - "renesas,iic-r8a7745" (RZ/G1E) |
| - "renesas,iic-r8a774a1" (RZ/G2M) |
| - "renesas,iic-r8a774b1" (RZ/G2N) |
| - "renesas,iic-r8a774c0" (RZ/G2E) |
| - "renesas,iic-r8a7790" (R-Car H2) |
| - "renesas,iic-r8a7791" (R-Car M2-W) |
| - "renesas,iic-r8a7792" (R-Car V2H) |
| - "renesas,iic-r8a7793" (R-Car M2-N) |
| - "renesas,iic-r8a7794" (R-Car E2) |
| - "renesas,iic-r8a7795" (R-Car H3) |
| - "renesas,iic-r8a7796" (R-Car M3-W) |
| - "renesas,iic-r8a77961" (R-Car M3-W+) |
| - "renesas,iic-r8a77965" (R-Car M3-N) |
| - "renesas,iic-r8a77990" (R-Car E3) |
| - "renesas,iic-sh73a0" (SH-Mobile AG5) |
| - "renesas,rcar-gen2-iic" (generic R-Car Gen2 or RZ/G1 |
| compatible device) |
| - "renesas,rcar-gen3-iic" (generic R-Car Gen3 or RZ/G2 |
| compatible device) |
| - "renesas,rmobile-iic" (generic device) |
| |
| When compatible with a generic R-Car version, nodes |
| must list the SoC-specific version corresponding to |
| the platform first followed by the generic R-Car |
| version. |
| |
| When compatible with "renesas,rmobile-iic" it should |
| be the last compatibility string listed. |
| |
| The r8a77990 (R-Car E3) and r8a774c0 (RZ/G2E) |
| controllers are not considered compatible with |
| "renesas,rcar-gen3-iic" or "renesas,rmobile-iic" |
| due to the absence of automatic transmission registers. |
| |
| - reg : address start and address range size of device |
| - interrupts : interrupt of device |
| - clocks : clock for device |
| - #address-cells : should be <1> |
| - #size-cells : should be <0> |
| |
| Optional properties: |
| - clock-frequency : frequency of bus clock in Hz. Default 100kHz if unset. |
| - dmas : Must contain a list of two references to DMA |
| specifiers, one for transmission, and one for |
| reception. |
| - dma-names : Must contain a list of two DMA names, "tx" and "rx". |
| |
| |
| Pinctrl properties might be needed, too. See there. |
| |
| Example: |
| |
| iic0: i2c@e6500000 { |
| compatible = "renesas,iic-r8a7790", "renesas,rcar-gen2-iic", |
| "renesas,rmobile-iic"; |
| reg = <0 0xe6500000 0 0x425>; |
| interrupts = <0 174 IRQ_TYPE_LEVEL_HIGH>; |
| clocks = <&mstp3_clks R8A7790_CLK_IIC0>; |
| clock-frequency = <400000>; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| }; |
