1df230079SRob Herring# SPDX-License-Identifier: GPL-2.0 2df230079SRob Herring%YAML 1.2 3df230079SRob Herring--- 4df230079SRob Herring$id: http://devicetree.org/schemas/serial/snps-dw-apb-uart.yaml# 5df230079SRob Herring$schema: http://devicetree.org/meta-schemas/core.yaml# 6df230079SRob Herring 7df230079SRob Herringtitle: Synopsys DesignWare ABP UART 8df230079SRob Herring 9df230079SRob Herringmaintainers: 10df230079SRob Herring - Rob Herring <robh@kernel.org> 11df230079SRob Herring 12df230079SRob HerringallOf: 13df230079SRob Herring - $ref: /schemas/serial.yaml# 14df230079SRob Herring 15df230079SRob Herringproperties: 16df230079SRob Herring compatible: 17df230079SRob Herring oneOf: 18df230079SRob Herring - items: 19df230079SRob Herring - enum: 20896efccfSRob Herring - renesas,r9a06g032-uart 21896efccfSRob Herring - renesas,r9a06g033-uart 22896efccfSRob Herring - const: renesas,rzn1-uart 23896efccfSRob Herring - items: 24896efccfSRob Herring - enum: 25df230079SRob Herring - rockchip,px30-uart 26df230079SRob Herring - rockchip,rk3036-uart 27df230079SRob Herring - rockchip,rk3066-uart 28df230079SRob Herring - rockchip,rk3188-uart 29df230079SRob Herring - rockchip,rk3288-uart 30ae9fdd23SJohan Jonker - rockchip,rk3308-uart 31df230079SRob Herring - rockchip,rk3328-uart 32df230079SRob Herring - rockchip,rk3368-uart 33df230079SRob Herring - rockchip,rk3399-uart 34df230079SRob Herring - rockchip,rv1108-uart 35df230079SRob Herring - const: snps,dw-apb-uart 36df230079SRob Herring - items: 37df230079SRob Herring - enum: 38df230079SRob Herring - brcm,bcm11351-dw-apb-uart 39df230079SRob Herring - brcm,bcm21664-dw-apb-uart 40df230079SRob Herring - const: snps,dw-apb-uart 41df230079SRob Herring - const: snps,dw-apb-uart 42df230079SRob Herring 43df230079SRob Herring reg: 44df230079SRob Herring maxItems: 1 45df230079SRob Herring 46df230079SRob Herring interrupts: 47df230079SRob Herring maxItems: 1 48df230079SRob Herring 49df230079SRob Herring clock-frequency: true 50df230079SRob Herring 51df230079SRob Herring clocks: 52df230079SRob Herring minItems: 1 53df230079SRob Herring maxItems: 2 54df230079SRob Herring 55df230079SRob Herring clock-names: 56df230079SRob Herring items: 57df230079SRob Herring - const: baudclk 58df230079SRob Herring - const: apb_pclk 59df230079SRob Herring 60df230079SRob Herring snps,uart-16550-compatible: 61df230079SRob Herring description: reflects the value of UART_16550_COMPATIBLE configuration 62df230079SRob Herring parameter. Define this if your UART does not implement the busy functionality. 63df230079SRob Herring type: boolean 64df230079SRob Herring 65df230079SRob Herring resets: 66df230079SRob Herring maxItems: 1 67df230079SRob Herring 68df230079SRob Herring reg-shift: true 69df230079SRob Herring 70df230079SRob Herring reg-io-width: true 71df230079SRob Herring 72df230079SRob Herring dcd-override: 73df230079SRob Herring description: Override the DCD modem status signal. This signal will 74df230079SRob Herring always be reported as active instead of being obtained from the modem 75df230079SRob Herring status register. Define this if your serial port does not use this 76df230079SRob Herring pin. 77df230079SRob Herring type: boolean 78df230079SRob Herring 79df230079SRob Herring dsr-override: 80df230079SRob Herring description: Override the DTS modem status signal. This signal will 81df230079SRob Herring always be reported as active instead of being obtained from the modem 82df230079SRob Herring status register. Define this if your serial port does not use this 83df230079SRob Herring pin. 84df230079SRob Herring type: boolean 85df230079SRob Herring 86df230079SRob Herring cts-override: 87df230079SRob Herring description: Override the CTS modem status signal. This signal will 88df230079SRob Herring always be reported as active instead of being obtained from the modem 89df230079SRob Herring status register. Define this if your serial port does not use this 90df230079SRob Herring pin. 91df230079SRob Herring type: boolean 92df230079SRob Herring 93df230079SRob Herring ri-override: 94df230079SRob Herring description: Override the RI modem status signal. This signal will always 95df230079SRob Herring be reported as inactive instead of being obtained from the modem status 96df230079SRob Herring register. Define this if your serial port does not use this pin. 97df230079SRob Herring type: boolean 98df230079SRob Herring 99df230079SRob Herringrequired: 100df230079SRob Herring - compatible 101df230079SRob Herring - reg 102df230079SRob Herring - interrupts 103df230079SRob Herring 1046fdc6e23SRob HerringunevaluatedProperties: false 1056fdc6e23SRob Herring 106df230079SRob Herringexamples: 107df230079SRob Herring - | 108df230079SRob Herring serial@80230000 { 109df230079SRob Herring compatible = "snps,dw-apb-uart"; 110df230079SRob Herring reg = <0x80230000 0x100>; 111df230079SRob Herring clock-frequency = <3686400>; 112df230079SRob Herring interrupts = <10>; 113df230079SRob Herring reg-shift = <2>; 114df230079SRob Herring reg-io-width = <4>; 115df230079SRob Herring dcd-override; 116df230079SRob Herring dsr-override; 117df230079SRob Herring cts-override; 118df230079SRob Herring ri-override; 119df230079SRob Herring }; 120df230079SRob Herring 121df230079SRob Herring - | 122df230079SRob Herring // Example with one clock: 123df230079SRob Herring serial@80230000 { 124df230079SRob Herring compatible = "snps,dw-apb-uart"; 125df230079SRob Herring reg = <0x80230000 0x100>; 126df230079SRob Herring clocks = <&baudclk>; 127df230079SRob Herring interrupts = <10>; 128df230079SRob Herring reg-shift = <2>; 129df230079SRob Herring reg-io-width = <4>; 130df230079SRob Herring }; 131df230079SRob Herring 132df230079SRob Herring - | 133df230079SRob Herring // Example with two clocks: 134df230079SRob Herring serial@80230000 { 135df230079SRob Herring compatible = "snps,dw-apb-uart"; 136df230079SRob Herring reg = <0x80230000 0x100>; 137df230079SRob Herring clocks = <&baudclk>, <&apb_pclk>; 138df230079SRob Herring clock-names = "baudclk", "apb_pclk"; 139df230079SRob Herring interrupts = <10>; 140df230079SRob Herring reg-shift = <2>; 141df230079SRob Herring reg-io-width = <4>; 142df230079SRob Herring }; 143df230079SRob Herring... 144