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+# 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>
+ - Manish Narani <manish.narani@xilinx.com>
+ - Michal Simek <michal.simek@xilinx.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";
+ };
+...