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Diffstat (limited to 'Documentation/devicetree/bindings/memory-controllers/snps,dw-umctl2-ddrc.yaml')
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diff --git a/Documentation/devicetree/bindings/memory-controllers/snps,dw-umctl2-ddrc.yaml b/Documentation/devicetree/bindings/memory-controllers/snps,dw-umctl2-ddrc.yaml new file mode 100644 index 0000000000..87ff9ee098 --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/snps,dw-umctl2-ddrc.yaml @@ -0,0 +1,117 @@ +# SPDX-License-Identifier: GPL-2.0-only +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/memory-controllers/snps,dw-umctl2-ddrc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Synopsys DesignWare Universal Multi-Protocol Memory Controller + +maintainers: + - Krzysztof Kozlowski <krzk@kernel.org> + - Michal Simek <michal.simek@amd.com> + +description: | + Synopsys DesignWare Enhanced uMCTL2 DDR Memory Controller is capable of + working with the memory devices supporting up to (LP)DDR4 protocol. It can + be equipped with SEC/DEC ECC feature if DRAM data bus width is either + 16-bits or 32-bits or 64-bits wide. + + For instance the ZynqMP DDR controller is based on the DW uMCTL2 v2.40a + controller. It has an optional SEC/DEC ECC support in 64- and 32-bits + bus width configurations. + +properties: + compatible: + oneOf: + - deprecated: true + description: Synopsys DW uMCTL2 DDR controller v3.80a + const: snps,ddrc-3.80a + - description: Synopsys DW uMCTL2 DDR controller + const: snps,dw-umctl2-ddrc + - description: Xilinx ZynqMP DDR controller v2.40a + const: xlnx,zynqmp-ddrc-2.40a + + interrupts: + description: + DW uMCTL2 DDRC IP-core provides individual IRQ signal for each event":" + ECC Corrected Error, ECC Uncorrected Error, ECC Address Protection, + Scrubber-Done signal, DFI Parity/CRC Error. Some platforms may have the + signals merged before they reach the IRQ controller or have some of them + absent in case if the corresponding feature is unavailable/disabled. + minItems: 1 + maxItems: 5 + + interrupt-names: + minItems: 1 + maxItems: 5 + oneOf: + - description: Common ECC CE/UE/Scrubber/DFI Errors IRQ + items: + - const: ecc + - description: Individual ECC CE/UE/Scrubber/DFI Errors IRQs + items: + enum: [ ecc_ce, ecc_ue, ecc_ap, ecc_sbr, dfi_e ] + + reg: + maxItems: 1 + + clocks: + description: + A standard set of the clock sources contains CSRs bus clock, AXI-ports + reference clock, DDRC core clock, Scrubber standalone clock + (synchronous to the DDRC clock). + minItems: 1 + maxItems: 4 + + clock-names: + minItems: 1 + maxItems: 4 + items: + enum: [ pclk, aclk, core, sbr ] + + resets: + description: + Each clock domain can have separate reset signal. + minItems: 1 + maxItems: 4 + + reset-names: + minItems: 1 + maxItems: 4 + items: + enum: [ prst, arst, core, sbr ] + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + + memory-controller@fd070000 { + compatible = "xlnx,zynqmp-ddrc-2.40a"; + reg = <0xfd070000 0x30000>; + + interrupt-parent = <&gic>; + interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "ecc"; + }; + - | + #include <dt-bindings/interrupt-controller/irq.h> + + memory-controller@3d400000 { + compatible = "snps,dw-umctl2-ddrc"; + reg = <0x3d400000 0x400000>; + + interrupts = <147 IRQ_TYPE_LEVEL_HIGH>, <148 IRQ_TYPE_LEVEL_HIGH>, + <149 IRQ_TYPE_LEVEL_HIGH>, <150 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "ecc_ce", "ecc_ue", "ecc_sbr", "dfi_e"; + + clocks = <&pclk>, <&aclk>, <&core_clk>, <&sbr_clk>; + clock-names = "pclk", "aclk", "core", "sbr"; + }; +... |