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Diffstat (limited to 'Documentation/devicetree/bindings/dma/fsl,imx-sdma.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/dma/fsl,imx-sdma.yaml | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/fsl,imx-sdma.yaml b/Documentation/devicetree/bindings/dma/fsl,imx-sdma.yaml new file mode 100644 index 000000000000..b95dd8db5a30 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/fsl,imx-sdma.yaml @@ -0,0 +1,149 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/fsl,imx-sdma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale Smart Direct Memory Access (SDMA) Controller for i.MX + +maintainers: + - Joy Zou <joy.zou@nxp.com> + +allOf: + - $ref: dma-controller.yaml# + +properties: + compatible: + oneOf: + - items: + - enum: + - fsl,imx50-sdma + - fsl,imx51-sdma + - fsl,imx53-sdma + - fsl,imx6q-sdma + - fsl,imx7d-sdma + - const: fsl,imx35-sdma + - items: + - enum: + - fsl,imx6sx-sdma + - fsl,imx6sl-sdma + - const: fsl,imx6q-sdma + - items: + - const: fsl,imx6ul-sdma + - const: fsl,imx6q-sdma + - const: fsl,imx35-sdma + - items: + - const: fsl,imx6sll-sdma + - const: fsl,imx6ul-sdma + - items: + - const: fsl,imx8mq-sdma + - const: fsl,imx7d-sdma + - items: + - enum: + - fsl,imx8mp-sdma + - fsl,imx8mn-sdma + - fsl,imx8mm-sdma + - const: fsl,imx8mq-sdma + - items: + - enum: + - fsl,imx25-sdma + - fsl,imx31-sdma + - fsl,imx35-sdma + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + fsl,sdma-ram-script-name: + $ref: /schemas/types.yaml#/definitions/string + description: Should contain the full path of SDMA RAM scripts firmware. + + "#dma-cells": + const: 3 + description: | + The first cell: request/event ID + + The second cell: peripheral types ID + enum: + - MCU domain SSI: 0 + - Shared SSI: 1 + - MMC: 2 + - SDHC: 3 + - MCU domain UART: 4 + - Shared UART: 5 + - FIRI: 6 + - MCU domain CSPI: 7 + - Shared CSPI: 8 + - SIM: 9 + - ATA: 10 + - CCM: 11 + - External peripheral: 12 + - Memory Stick Host Controller: 13 + - Shared Memory Stick Host Controller: 14 + - DSP: 15 + - Memory: 16 + - FIFO type Memory: 17 + - SPDIF: 18 + - IPU Memory: 19 + - ASRC: 20 + - ESAI: 21 + - SSI Dual FIFO: 22 + description: needs firmware more than ver 2 + - Shared ASRC: 23 + - SAI: 24 + - HDMI Audio: 25 + + The third cell: transfer priority ID + enum: + - High: 0 + - Medium: 1 + - Low: 2 + + gpr: + $ref: /schemas/types.yaml#/definitions/phandle + description: The phandle to the General Purpose Register (GPR) node + + fsl,sdma-event-remap: + $ref: /schemas/types.yaml#/definitions/uint32-matrix + maxItems: 2 + items: + items: + - description: GPR register offset + - description: GPR register shift + - description: GPR register value + description: | + Register bits of sdma event remap, the format is <reg shift val>. + The order is <RX>, <TX>. + + clocks: + maxItems: 2 + + clock-names: + items: + - const: ipg + - const: ahb + + iram: + $ref: /schemas/types.yaml#/definitions/phandle + description: The phandle to the On-chip RAM (OCRAM) node. + +required: + - compatible + - reg + - interrupts + - fsl,sdma-ram-script-name + +additionalProperties: false + +examples: + - | + sdma: dma-controller@83fb0000 { + compatible = "fsl,imx51-sdma", "fsl,imx35-sdma"; + reg = <0x83fb0000 0x4000>; + interrupts = <6>; + #dma-cells = <3>; + fsl,sdma-ram-script-name = "sdma-imx51.bin"; + }; + +... |