From: Haowei Zheng <zhenghaowei@xxxxxxxxxxx> Add Loongson UART controller binding with DT schema format using json-schema. Signed-off-by: Haowei Zheng <zhenghaowei@xxxxxxxxxxx> --- .../bindings/serial/loongson,uart.yaml | 63 +++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/serial/loongson,uart.yaml Changes in V2: - Correct the schema formatting errors. - file name changed from 'loongson-uart.yaml' to 'loongson,ls7a-uart.yaml' - Replace 'loongson,loongson-uart' with 'loongson,ls7a-uart'. Changes in V3: - Change the filename from 'loongson,ls7a-uart.yaml' to 'loongson,uart.yaml'. - Drop newly defined features: fractional-division, rts-invert, dtr-invert, cts-invert and dsr-invert. - Add three specific SoC: 'loongson,ls7a-uart', 'loongson,ls3a5000-uart' and 'loongson,ls2k2000-uart'. - Drop 'LOONGSON UART DRIVER' description in MAINTAINERS. diff --git a/Documentation/devicetree/bindings/serial/loongson,uart.yaml b/Documentation/devicetree/bindings/serial/loongson,uart.yaml new file mode 100644 index 000000000000..19a65dd5be9f --- /dev/null +++ b/Documentation/devicetree/bindings/serial/loongson,uart.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/loongson,uart.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Loongson UART + +maintainers: + - Haowei Zheng <zhenghaowei@xxxxxxxxxxx> + +allOf: + - $ref: serial.yaml + +properties: + compatible: + oneOf: + - enum: + - loongson,ls7a-uart + - loongson,ls3a5000-uart + - loongson,ls2k2000-uart + - items: + - enum: + - loongson,ls2k1000-uart + - loongson,ls2k0500-uart + - const: loongson,ls7a-uart + - items: + - enum: + - loongson,ls2k1500-uart + - const: loongson,ls2k2000-uart + - items: + - enum: + - loongson,ls3a6000-uart + - const: loongson,ls3a5000-uart + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clock-frequency: true + +required: + - compatible + - reg + - interrupts + - clock-frequency + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/clock/loongson,ls2k-clk.h> + + serial@1fe20000 { + compatible = "loongson,ls2k1000-uart", "loongson,ls7a-uart"; + reg = <0x1fe20000 0x10>; + clock-frequency = <125000000>; + interrupt-parent = <&liointc0>; + interrupts = <0x0 IRQ_TYPE_LEVEL_HIGH>; + }; -- 2.43.0
