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Diffstat (limited to 'Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml')
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1 files changed, 185 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml new file mode 100644 index 000000000..6f71fc96b --- /dev/null +++ b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml @@ -0,0 +1,185 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/can/renesas,rcar-canfd.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas R-Car CAN FD Controller + +maintainers: + - Fabrizio Castro <fabrizio.castro.jz@renesas.com> + +allOf: + - $ref: can-controller.yaml# + +properties: + compatible: + oneOf: + - items: + - enum: + - renesas,r8a774a1-canfd # RZ/G2M + - renesas,r8a774b1-canfd # RZ/G2N + - renesas,r8a774c0-canfd # RZ/G2E + - renesas,r8a774e1-canfd # RZ/G2H + - renesas,r8a7795-canfd # R-Car H3 + - renesas,r8a7796-canfd # R-Car M3-W + - renesas,r8a77961-canfd # R-Car M3-W+ + - renesas,r8a77965-canfd # R-Car M3-N + - renesas,r8a77970-canfd # R-Car V3M + - renesas,r8a77980-canfd # R-Car V3H + - renesas,r8a77990-canfd # R-Car E3 + - renesas,r8a77995-canfd # R-Car D3 + - const: renesas,rcar-gen3-canfd # R-Car Gen3 and RZ/G2 + + - items: + - enum: + - renesas,r9a07g043-canfd # RZ/G2UL + - renesas,r9a07g044-canfd # RZ/G2{L,LC} + - renesas,r9a07g054-canfd # RZ/V2L + - const: renesas,rzg2l-canfd # RZ/G2L family + + - const: renesas,r8a779a0-canfd # R-Car V3U + + reg: + maxItems: 1 + + interrupts: true + + clocks: + maxItems: 3 + + clock-names: + items: + - const: fck + - const: canfd + - const: can_clk + + power-domains: + maxItems: 1 + + resets: true + + renesas,no-can-fd: + $ref: /schemas/types.yaml#/definitions/flag + description: + The controller can operate in either CAN FD only mode (default) or + Classical CAN only mode. The mode is global to both the channels. + Specify this property to put the controller in Classical CAN only mode. + + assigned-clocks: + description: + Reference to the CANFD clock. The CANFD clock is a div6 clock and can be + used by both CAN (if present) and CAN FD controllers at the same time. + It needs to be scaled to maximum frequency if any of these controllers + use it. + + assigned-clock-rates: + description: Maximum frequency of the CANFD clock. + +patternProperties: + "^channel[01]$": + type: object + description: + The controller supports two channels and each is represented as a child + node. Each child node supports the "status" property only, which + is used to enable/disable the respective channel. + +required: + - compatible + - reg + - interrupts + - interrupt-names + - clocks + - clock-names + - power-domains + - resets + - assigned-clocks + - assigned-clock-rates + - channel0 + - channel1 + +if: + properties: + compatible: + contains: + enum: + - renesas,rzg2l-canfd +then: + properties: + interrupts: + items: + - description: CAN global error interrupt + - description: CAN receive FIFO interrupt + - description: CAN0 error interrupt + - description: CAN0 transmit interrupt + - description: CAN0 transmit/receive FIFO receive completion interrupt + - description: CAN1 error interrupt + - description: CAN1 transmit interrupt + - description: CAN1 transmit/receive FIFO receive completion interrupt + + interrupt-names: + items: + - const: g_err + - const: g_recc + - const: ch0_err + - const: ch0_rec + - const: ch0_trx + - const: ch1_err + - const: ch1_rec + - const: ch1_trx + + resets: + maxItems: 2 + + reset-names: + items: + - const: rstp_n + - const: rstc_n + + required: + - reset-names +else: + properties: + interrupts: + items: + - description: Channel interrupt + - description: Global interrupt + + interrupt-names: + items: + - const: ch_int + - const: g_int + + resets: + maxItems: 1 + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/clock/r8a7795-cpg-mssr.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/power/r8a7795-sysc.h> + + canfd: can@e66c0000 { + compatible = "renesas,r8a7795-canfd", + "renesas,rcar-gen3-canfd"; + reg = <0xe66c0000 0x8000>; + interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "ch_int", "g_int"; + clocks = <&cpg CPG_MOD 914>, + <&cpg CPG_CORE R8A7795_CLK_CANFD>, + <&can_clk>; + clock-names = "fck", "canfd", "can_clk"; + assigned-clocks = <&cpg CPG_CORE R8A7795_CLK_CANFD>; + assigned-clock-rates = <40000000>; + power-domains = <&sysc R8A7795_PD_ALWAYS_ON>; + resets = <&cpg 914>; + + channel0 { + }; + + channel1 { + }; + }; |