| # 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: |
| minItems: 2 |
| |
| dma-names: |
| items: |
| - const: rx |
| - const: tx |
| |
| 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 |
| - interrupts |
| |
| 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>; |
| }; |
| ... |
