diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt | 76 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml | 135 |
2 files changed, 135 insertions, 76 deletions
diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt deleted file mode 100644 index 12bbe9f22560..000000000000 --- a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt +++ /dev/null @@ -1,76 +0,0 @@ -* Synopsys DesignWare ABP UART - -Required properties: -- compatible : "snps,dw-apb-uart" -- reg : offset and length of the register set for the device. -- interrupts : should contain uart interrupt. - -Clock handling: -The clock rate of the input clock needs to be supplied by one of -- clock-frequency : the input clock frequency for the UART. -- clocks : phandle to the input clock - -The supplying peripheral clock can also be handled, needing a second property -- clock-names: tuple listing input clock names. - Required elements: "baudclk", "apb_pclk" - -Optional properties: -- snps,uart-16550-compatible : reflects the value of UART_16550_COMPATIBLE - configuration parameter. Define this if your UART does not implement the busy - functionality. -- resets : phandle to the parent reset controller. -- reg-shift : quantity to shift the register offsets by. If this property is - not present then the register offsets are not shifted. -- reg-io-width : the size (in bytes) of the IO accesses that should be - performed on the device. If this property is not present then single byte - accesses are used. -- dcd-override : 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. -- dsr-override : 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. -- cts-override : 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. -- ri-override : 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. - -Example: - - uart@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: - - uart@80230000 { - compatible = "snps,dw-apb-uart"; - reg = <0x80230000 0x100>; - clocks = <&baudclk>; - interrupts = <10>; - reg-shift = <2>; - reg-io-width = <4>; - }; - -Example with two clocks: - - uart@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>; - }; 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 000000000000..3e90c790d720 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml @@ -0,0 +1,135 @@ +# 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: /schemas/serial.yaml# + +properties: + compatible: + oneOf: + - items: + - enum: + - rockchip,px30-uart + - rockchip,rk3036-uart + - rockchip,rk3066-uart + - rockchip,rk3188-uart + - rockchip,rk3288-uart + - rockchip,rk3328-uart + - rockchip,rk3368-uart + - rockchip,rk3399-uart + - rockchip,rv1108-uart + - const: snps,dw-apb-uart + - items: + - enum: + - brcm,bcm11351-dw-apb-uart + - brcm,bcm21664-dw-apb-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 + + 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 + +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>; + }; +... |