bindings/dma/mediatek%2Cuart-dma.yaml

1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/dma/mediatek,uart-dma.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: MediaTek UART APDMA controller
10   - Long Cheng <long.cheng@mediatek.com>
13   The MediaTek UART APDMA controller provides DMA capabilities
14   for the UART peripheral bus.
17   - $ref: dma-controller.yaml#
22       - items:
23           - enum:
24               - mediatek,mt2712-uart-dma
25               - mediatek,mt6795-uart-dma
26               - mediatek,mt8365-uart-dma
27               - mediatek,mt8516-uart-dma
28           - const: mediatek,mt6577-uart-dma
29       - enum:
30           - mediatek,mt6577-uart-dma
38       TX, RX interrupt lines for each UART APDMA channel
46   clock-names:
49   "#dma-cells":
52       The first cell specifies the UART APDMA channel number
54   dma-requests:
56       Number of virtual channels of the UART APDMA controller
59   mediatek,dma-33bits:
61     description: Enable 33-bits UART APDMA support
64   - compatible
65   - reg
66   - interrupts
73       - dma-requests
82   - |
83     #include <dt-bindings/interrupt-controller/arm-gic.h>
84     #include <dt-bindings/clock/mt2712-clk.h>
86         #address-cells = <2>;
87         #size-cells = <2>;
89         apdma: dma-controller@11000400 {
90             compatible = "mediatek,mt2712-uart-dma",
91                          "mediatek,mt6577-uart-dma";
116             dma-requests = <12>;
118             clock-names = "apdma";
119             mediatek,dma-33bits;
120             #dma-cells = <1>;