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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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6bc8fbdd71
The UART IP version of the ums9632 SoC project has been upgraded. UART controller registers have added valid bits to support new features. In order to distinguish different UART IP versions, we use sc9632-uart to represent upgraded IP and sc9836-uart to represent old IP. Signed-off-by: Wenhua Lin <Wenhua.Lin@unisoc.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20250122072352.3663653-1-Wenhua.Lin@unisoc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
83 lines
1.7 KiB
YAML
83 lines
1.7 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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# Copyright 2019 Unisoc Inc.
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/serial/sprd-uart.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Spreadtrum serial UART
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maintainers:
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- Orson Zhai <orsonzhai@gmail.com>
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- Baolin Wang <baolin.wang7@gmail.com>
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- Chunyan Zhang <zhang.lyra@gmail.com>
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properties:
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compatible:
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oneOf:
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- items:
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- enum:
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- sprd,ums9632-uart
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- const: sprd,sc9632-uart
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- items:
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- enum:
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- sprd,sc9860-uart
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- sprd,sc9863a-uart
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- sprd,ums512-uart
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- sprd,ums9620-uart
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- const: sprd,sc9836-uart
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- enum:
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- sprd,sc9632-uart
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- sprd,sc9836-uart
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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minItems: 1
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maxItems: 3
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clock-names:
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description: |
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"enable" for UART module enable clock, "uart" for UART clock, "source"
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for UART source (parent) clock.
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items:
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- const: enable
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- const: uart
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- const: source
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dmas:
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minItems: 1
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maxItems: 2
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dma-names:
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minItems: 1
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items:
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- const: rx
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- const: tx
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required:
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- compatible
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- reg
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- interrupts
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additionalProperties: false
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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@0 {
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compatible = "sprd,sc9860-uart", "sprd,sc9836-uart";
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reg = <0x0 0x100>;
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interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
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dma-names = "rx", "tx";
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dmas = <&ap_dma 19>, <&ap_dma 20>;
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clock-names = "enable", "uart", "source";
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clocks = <&clk_ap_apb_gates 9>, <&clk_uart0>, <&ext_26m>;
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};
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...
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