# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/memory-controllers/st,stm32-fmc2-ebi.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: STMicroelectronics Flexible Memory Controller 2 (FMC2) description: | The FMC2 functional block makes the interface with: synchronous and asynchronous static devices (such as PSNOR, PSRAM or other memory-mapped peripherals) and NAND flash memories. Its main purposes are: - to translate AXI transactions into the appropriate external device protocol - to meet the access time requirements of the external devices All external devices share the addresses, data and control signals with the controller. Each external device is accessed by means of a unique Chip Select. The FMC2 performs only one access at a time to an external device. maintainers: - Christophe Kerello properties: compatible: enum: - st,stm32mp1-fmc2-ebi - st,stm32mp25-fmc2-ebi reg: maxItems: 1 clocks: maxItems: 1 resets: maxItems: 1 power-domains: maxItems: 1 "#address-cells": const: 2 "#size-cells": const: 1 ranges: description: | Reflects the memory layout with four integer values per bank. Format: 0
patternProperties: "^.*@[0-4],[a-f0-9]+$": additionalProperties: true type: object $ref: mc-peripheral-props.yaml# required: - "#address-cells" - "#size-cells" - compatible - reg - clocks - ranges additionalProperties: false examples: - | #include #include #include memory-controller@58002000 { #address-cells = <2>; #size-cells = <1>; compatible = "st,stm32mp1-fmc2-ebi"; reg = <0x58002000 0x1000>; clocks = <&rcc FMC_K>; resets = <&rcc FMC_R>; ranges = <0 0 0x60000000 0x04000000>, /* EBI CS 1 */ <1 0 0x64000000 0x04000000>, /* EBI CS 2 */ <2 0 0x68000000 0x04000000>, /* EBI CS 3 */ <3 0 0x6c000000 0x04000000>, /* EBI CS 4 */ <4 0 0x80000000 0x10000000>; /* NAND */ psram@0,0 { compatible = "mtd-ram"; reg = <0 0x00000000 0x100000>; bank-width = <2>; st,fmc2-ebi-cs-transaction-type = <1>; st,fmc2-ebi-cs-address-setup-ns = <60>; st,fmc2-ebi-cs-data-setup-ns = <30>; st,fmc2-ebi-cs-bus-turnaround-ns = <5>; }; nand-controller@4,0 { #address-cells = <1>; #size-cells = <0>; compatible = "st,stm32mp1-fmc2-nfc"; reg = <4 0x00000000 0x1000>, <4 0x08010000 0x1000>, <4 0x08020000 0x1000>, <4 0x01000000 0x1000>, <4 0x09010000 0x1000>, <4 0x09020000 0x1000>; interrupts = ; dmas = <&mdma1 20 0x2 0x12000a02 0x0 0x0>, <&mdma1 20 0x2 0x12000a08 0x0 0x0>, <&mdma1 21 0x2 0x12000a0a 0x0 0x0>; dma-names = "tx", "rx", "ecc"; nand@0 { reg = <0>; nand-on-flash-bbt; #address-cells = <1>; #size-cells = <1>; }; }; }; ...