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| -rw-r--r-- | Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml | 160 |
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diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml new file mode 100644 index 0000000000..17c553123f --- /dev/null +++ b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml @@ -0,0 +1,160 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/serial/snps-dw-apb-uart.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Synopsys DesignWare ABP UART + +maintainers: + - Rob Herring <robh@kernel.org> + +allOf: + - $ref: serial.yaml# + +properties: + compatible: + oneOf: + - items: + - enum: + - renesas,r9a06g032-uart + - renesas,r9a06g033-uart + - const: renesas,rzn1-uart + - items: + - enum: + - rockchip,px30-uart + - rockchip,rk1808-uart + - rockchip,rk3036-uart + - rockchip,rk3066-uart + - rockchip,rk3128-uart + - rockchip,rk3188-uart + - rockchip,rk3288-uart + - rockchip,rk3308-uart + - rockchip,rk3328-uart + - rockchip,rk3368-uart + - rockchip,rk3399-uart + - rockchip,rk3568-uart + - rockchip,rk3588-uart + - rockchip,rv1108-uart + - rockchip,rv1126-uart + - const: snps,dw-apb-uart + - items: + - enum: + - brcm,bcm11351-dw-apb-uart + - brcm,bcm21664-dw-apb-uart + - const: snps,dw-apb-uart + - items: + - enum: + - starfive,jh7100-hsuart + - starfive,jh7100-uart + - const: snps,dw-apb-uart + - const: snps,dw-apb-uart + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clock-frequency: true + + clocks: + minItems: 1 + maxItems: 2 + + clock-names: + items: + - const: baudclk + - const: apb_pclk + + dmas: + maxItems: 2 + + dma-names: + items: + - const: tx + - const: rx + + snps,uart-16550-compatible: + description: reflects the value of UART_16550_COMPATIBLE configuration + parameter. Define this if your UART does not implement the busy functionality. + type: boolean + + resets: + maxItems: 1 + + reg-shift: true + + reg-io-width: true + + dcd-override: + description: Override the DCD modem status signal. This signal will + always be reported as active instead of being obtained from the modem + status register. Define this if your serial port does not use this + pin. + type: boolean + + dsr-override: + description: Override the DTS modem status signal. This signal will + always be reported as active instead of being obtained from the modem + status register. Define this if your serial port does not use this + pin. + type: boolean + + cts-override: + description: Override the CTS modem status signal. This signal will + always be reported as active instead of being obtained from the modem + status register. Define this if your serial port does not use this + pin. + type: boolean + + ri-override: + description: Override the RI modem status signal. This signal will always + be reported as inactive instead of being obtained from the modem status + register. Define this if your serial port does not use this pin. + type: boolean + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + serial@80230000 { + compatible = "snps,dw-apb-uart"; + reg = <0x80230000 0x100>; + clock-frequency = <3686400>; + interrupts = <10>; + reg-shift = <2>; + reg-io-width = <4>; + dcd-override; + dsr-override; + cts-override; + ri-override; + }; + + - | + // Example with one clock: + serial@80230000 { + compatible = "snps,dw-apb-uart"; + reg = <0x80230000 0x100>; + clocks = <&baudclk>; + interrupts = <10>; + reg-shift = <2>; + reg-io-width = <4>; + }; + + - | + // Example with two clocks: + serial@80230000 { + compatible = "snps,dw-apb-uart"; + reg = <0x80230000 0x100>; + clocks = <&baudclk>, <&apb_pclk>; + clock-names = "baudclk", "apb_pclk"; + interrupts = <10>; + reg-shift = <2>; + reg-io-width = <4>; + }; +... |