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dt-bindings: serial: Convert marvell,armada-3700-uart to DT schema
Convert the Marvell Armada-3700 UART binding to DT schema. It is a straight-forward conversion. Drop the long deprecated single interrupt support. Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org> Link: https://lore.kernel.org/r/20250507154408.1595932-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rob Herring (Arm)
Greg Kroah-Hartman
parent
6f5ff13bbc
commit
2446bd692e
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/serial/marvell,armada-3700-uart.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Marvell Armada-3700 UART
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maintainers:
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- Pali Rohár <pali@kernel.org>
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description:
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Marvell UART is a non standard UART used in some of Marvell EBU SoCs (e.g.
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Armada-3700).
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properties:
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compatible:
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enum:
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- marvell,armada-3700-uart
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- marvell,armada-3700-uart-ext
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reg:
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maxItems: 1
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clocks:
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maxItems: 1
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description:
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UART reference clock used to derive the baud rate. If absent, only fixed
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baud rate from the bootloader is supported.
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interrupts:
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minItems: 2
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items:
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- description: UART sum interrupt
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- description: UART TX interrupt
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- description: UART RX interrupt
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interrupt-names:
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minItems: 2
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maxItems: 3
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required:
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- compatible
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- reg
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- interrupts
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- interrupt-names
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unevaluatedProperties: false
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allOf:
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- $ref: /schemas/serial/serial.yaml#
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- if:
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properties:
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compatible:
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const: marvell,armada-3700-uart-ext
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then:
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properties:
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interrupts:
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maxItems: 2
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interrupt-names:
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items:
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- const: uart-tx
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- const: uart-rx
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else:
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properties:
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interrupts:
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minItems: 3
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interrupt-names:
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items:
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- const: uart-sum
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- const: uart-tx
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- const: uart-rx
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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serial@12000 {
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compatible = "marvell,armada-3700-uart";
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reg = <0x12000 0x18>;
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clocks = <&uartclk 0>;
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interrupts =
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<GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "uart-sum", "uart-tx", "uart-rx";
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};
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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serial@12200 {
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compatible = "marvell,armada-3700-uart-ext";
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reg = <0x12200 0x30>;
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clocks = <&uartclk 1>;
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interrupts =
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<GIC_SPI 30 IRQ_TYPE_EDGE_RISING>,
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<GIC_SPI 31 IRQ_TYPE_EDGE_RISING>;
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interrupt-names = "uart-tx", "uart-rx";
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};
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@ -1,56 +0,0 @@
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* Marvell UART : Non standard UART used in some of Marvell EBU SoCs
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e.g., Armada-3700.
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Required properties:
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- compatible:
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- "marvell,armada-3700-uart" for the standard variant of the UART
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(32 bytes FIFO, no DMA, level interrupts, 8-bit access to the
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FIFO), called also UART1.
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- "marvell,armada-3700-uart-ext" for the extended variant of the
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UART (128 bytes FIFO, DMA, front interrupts, 8-bit or 32-bit
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accesses to the FIFO), called also UART2.
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- reg: offset and length of the register set for the device.
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- clocks: UART reference clock used to derive the baudrate. If no clock
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is provided (possible only with the "marvell,armada-3700-uart"
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compatible string for backward compatibility), it will only work
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if the baudrate was initialized by the bootloader and no baudrate
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change will then be possible. When provided it should be UART1-clk
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for standard variant of UART and UART2-clk for extended variant
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of UART. TBG clock (with UART TBG divisors d1=d2=1) or xtal clock
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should not be used and are supported only for backward compatibility.
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- interrupts:
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- Must contain three elements for the standard variant of the IP
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(marvell,armada-3700-uart): "uart-sum", "uart-tx" and "uart-rx",
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respectively the UART sum interrupt, the UART TX interrupt and
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UART RX interrupt. A corresponding interrupt-names property must
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be defined.
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- Must contain two elements for the extended variant of the IP
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(marvell,armada-3700-uart-ext): "uart-tx" and "uart-rx",
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respectively the UART TX interrupt and the UART RX interrupt. A
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corresponding interrupt-names property must be defined.
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- For backward compatibility reasons, a single element interrupts
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property is also supported for the standard variant of the IP,
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containing only the UART sum interrupt. This form is deprecated
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and should no longer be used.
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Example:
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uart0: serial@12000 {
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compatible = "marvell,armada-3700-uart";
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reg = <0x12000 0x18>;
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clocks = <&uartclk 0>;
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interrupts =
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<GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "uart-sum", "uart-tx", "uart-rx";
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};
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uart1: serial@12200 {
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compatible = "marvell,armada-3700-uart-ext";
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reg = <0x12200 0x30>;
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clocks = <&uartclk 1>;
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interrupts =
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<GIC_SPI 30 IRQ_TYPE_EDGE_RISING>,
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<GIC_SPI 31 IRQ_TYPE_EDGE_RISING>;
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interrupt-names = "uart-tx", "uart-rx";
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};
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@ -14275,7 +14275,7 @@ MARVELL ARMADA 3700 SERIAL DRIVER
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M: Pali Rohár <pali@kernel.org>
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S: Maintained
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F: Documentation/devicetree/bindings/clock/marvell,armada-3700-uart-clock.yaml
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F: Documentation/devicetree/bindings/serial/mvebu-uart.txt
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F: Documentation/devicetree/bindings/serial/marvell,armada-3700-uart.yaml
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F: drivers/tty/serial/mvebu-uart.c
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MARVELL ARMADA DRM SUPPORT
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