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Diffstat (limited to 'Documentation/devicetree/bindings/misc/xlnx,sd-fec.yaml')
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diff --git a/Documentation/devicetree/bindings/misc/xlnx,sd-fec.yaml b/Documentation/devicetree/bindings/misc/xlnx,sd-fec.yaml new file mode 100644 index 000000000000..9bd210337426 --- /dev/null +++ b/Documentation/devicetree/bindings/misc/xlnx,sd-fec.yaml @@ -0,0 +1,140 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/misc/xlnx,sd-fec.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Xilinx SDFEC(16nm) IP + +maintainers: + - Cvetic, Dragan <dragan.cvetic@amd.com> + - Erim, Salih <salih.erim@amd.com> + +description: + The Soft Decision Forward Error Correction (SDFEC) Engine is a Hard IP block + which provides high-throughput LDPC and Turbo Code implementations. + The LDPC decode & encode functionality is capable of covering a range of + customer specified Quasi-cyclic (QC) codes. The Turbo decode functionality + principally covers codes used by LTE. The FEC Engine offers significant + power and area savings versus implementations done in the FPGA fabric. + +properties: + compatible: + const: xlnx,sd-fec-1.1 + + reg: + maxItems: 1 + + clocks: + minItems: 2 + maxItems: 8 + additionalItems: true + items: + - description: Main processing clock for processing core + - description: AXI4-Lite memory-mapped slave interface clock + - description: Control input AXI4-Stream Slave interface clock + - description: DIN AXI4-Stream Slave interface clock + - description: Status output AXI4-Stream Master interface clock + - description: DOUT AXI4-Stream Master interface clock + - description: DIN_WORDS AXI4-Stream Slave interface clock + - description: DOUT_WORDS AXI4-Stream Master interface clock + + clock-names: + allOf: + - minItems: 2 + maxItems: 8 + additionalItems: true + items: + - const: core_clk + - const: s_axi_aclk + - items: + enum: + - core_clk + - s_axi_aclk + - s_axis_ctrl_aclk + - s_axis_din_aclk + - m_axis_status_aclk + - m_axis_dout_aclk + - s_axis_din_words_aclk + - m_axis_dout_words_aclk + + interrupts: + maxItems: 1 + + xlnx,sdfec-code: + description: + The SD-FEC integrated block supports Low Density Parity Check (LDPC) + decoding and encoding and Turbo code decoding. The LDPC codes used are + highly configurable, and the specific code used can be specified on + a codeword-by-codeword basis. The Turbo code decoding is required by LTE + standard. + $ref: /schemas/types.yaml#/definitions/string + items: + enum: [ ldpc, turbo ] + + xlnx,sdfec-din-width: + description: + Configures the DIN AXI stream where a value of 1 + configures a width of "1x128b", 2 a width of "2x128b" and 4 configures a width + of "4x128b". + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [ 1, 2, 4 ] + + xlnx,sdfec-din-words: + description: + A value 0 indicates that the DIN_WORDS interface is + driven with a fixed value and is not present on the device, a value of 1 + configures the DIN_WORDS to be block based, while a value of 2 configures the + DIN_WORDS input to be supplied for each AXI transaction. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [ 0, 1, 2 ] + + xlnx,sdfec-dout-width: + description: + Configures the DOUT AXI stream where a value of 1 configures a width of "1x128b", + 2 a width of "2x128b" and 4 configures a width of "4x128b". + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [ 1, 2, 4 ] + + xlnx,sdfec-dout-words: + description: + A value 0 indicates that the DOUT_WORDS interface is + driven with a fixed value and is not present on the device, a value of 1 + configures the DOUT_WORDS to be block based, while a value of 2 configures the + DOUT_WORDS input to be supplied for each AXI transaction. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [ 0, 1, 2 ] + +required: + - compatible + - reg + - clocks + - clock-names + - xlnx,sdfec-code + - xlnx,sdfec-din-width + - xlnx,sdfec-din-words + - xlnx,sdfec-dout-width + - xlnx,sdfec-dout-words + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + + sd-fec@a0040000 { + compatible = "xlnx,sd-fec-1.1"; + reg = <0xa0040000 0x40000>; + clocks = <&misc_clk_2>, <&misc_clk_0>, <&misc_clk_1>, <&misc_clk_1>, + <&misc_clk_1>, <&misc_clk_1>; + clock-names = "core_clk", "s_axi_aclk", "s_axis_ctrl_aclk", + "s_axis_din_aclk", "m_axis_status_aclk", + "m_axis_dout_aclk"; + interrupts = <1 IRQ_TYPE_LEVEL_HIGH>; + xlnx,sdfec-code = "ldpc"; + xlnx,sdfec-din-width = <2>; + xlnx,sdfec-din-words = <0>; + xlnx,sdfec-dout-width = <1>; + xlnx,sdfec-dout-words = <0>; + }; + |