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140 lines
3.4 KiB
140 lines
3.4 KiB
# SPDX-License-Identifier: GPL-2.0 |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/serial/samsung_uart.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: Samsung S3C, S5P, Exynos, and S5L (Apple SoC) SoC UART Controller |
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maintainers: |
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- Krzysztof Kozlowski <[email protected]> |
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- Greg Kroah-Hartman <[email protected]> |
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description: |+ |
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Each Samsung UART should have an alias correctly numbered in the "aliases" |
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node, according to serialN format, where N is the port number (non-negative |
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decimal integer) as specified by User's Manual of respective SoC. |
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properties: |
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compatible: |
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items: |
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- enum: |
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- apple,s5l-uart |
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- axis,artpec8-uart |
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- samsung,s3c2410-uart |
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- samsung,s3c2412-uart |
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- samsung,s3c2440-uart |
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- samsung,s3c6400-uart |
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- samsung,s5pv210-uart |
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- samsung,exynos4210-uart |
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- samsung,exynos5433-uart |
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- samsung,exynos850-uart |
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reg: |
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maxItems: 1 |
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reg-io-width: |
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description: | |
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The size (in bytes) of the IO accesses that should be performed |
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on the device. |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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enum: [ 1, 4 ] |
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clocks: |
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minItems: 2 |
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maxItems: 5 |
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clock-names: |
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description: N = 0 is allowed for SoCs without internal baud clock mux. |
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minItems: 2 |
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items: |
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- const: uart |
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- pattern: '^clk_uart_baud[0-3]$' |
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- pattern: '^clk_uart_baud[0-3]$' |
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- pattern: '^clk_uart_baud[0-3]$' |
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- pattern: '^clk_uart_baud[0-3]$' |
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dmas: |
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items: |
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- description: DMA controller phandle and request line for RX |
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- description: DMA controller phandle and request line for TX |
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dma-names: |
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items: |
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- const: rx |
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- const: tx |
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interrupts: |
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description: RX interrupt and optionally TX interrupt. |
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minItems: 1 |
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maxItems: 2 |
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samsung,uart-fifosize: |
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description: The fifo size supported by the UART channel. |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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enum: [16, 64, 256] |
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required: |
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- compatible |
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- clocks |
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- clock-names |
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- interrupts |
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- reg |
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unevaluatedProperties: false |
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allOf: |
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- $ref: serial.yaml# |
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- if: |
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properties: |
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compatible: |
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contains: |
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enum: |
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- samsung,s3c2410-uart |
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- samsung,s5pv210-uart |
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then: |
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properties: |
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clocks: |
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minItems: 2 |
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maxItems: 3 |
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clock-names: |
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minItems: 2 |
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items: |
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- const: uart |
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- pattern: '^clk_uart_baud[0-1]$' |
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- pattern: '^clk_uart_baud[0-1]$' |
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- if: |
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properties: |
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compatible: |
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contains: |
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enum: |
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- apple,s5l-uart |
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- axis,artpec8-uart |
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- samsung,exynos4210-uart |
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- samsung,exynos5433-uart |
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then: |
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properties: |
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clocks: |
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maxItems: 2 |
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clock-names: |
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items: |
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- const: uart |
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- const: clk_uart_baud0 |
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examples: |
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- | |
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#include <dt-bindings/clock/samsung,s3c64xx-clock.h> |
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uart0: serial@7f005000 { |
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compatible = "samsung,s3c6400-uart"; |
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reg = <0x7f005000 0x100>; |
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interrupt-parent = <&vic1>; |
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interrupts = <5>; |
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clock-names = "uart", "clk_uart_baud2", |
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"clk_uart_baud3"; |
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clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>, |
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<&clocks SCLK_UART>; |
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samsung,uart-fifosize = <16>; |
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};
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