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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/i2c/renesas,iic.txt | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/i2c/renesas,iic.txt')
-rw-r--r-- | Documentation/devicetree/bindings/i2c/renesas,iic.txt | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/renesas,iic.txt b/Documentation/devicetree/bindings/i2c/renesas,iic.txt new file mode 100644 index 000000000..93d412832 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/renesas,iic.txt @@ -0,0 +1,72 @@ +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-r8a774e1" (RZ/G2H) + - "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>; + }; |