| # Copyright (c) 2023 Nuvoton Technology Corporation. |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| description: | |
| The target flash devices accessed by Nuvoton eSPI TAF controller. |
| |
| Representation: |
| |
| espi_taf: espitaf@4000a000 { |
| compatible = "nuvoton,npcx-espi-taf"; |
| reg = <0x4000a000 0x2000>; |
| |
| mapped-addr = <0x68000000>; |
| max-read-sz = "NPCX_ESPI_TAF_MAX_READ_REQ_64B"; |
| erase-sz = "NPCX_ESPI_TAF_ERASE_BLOCK_SIZE_4KB"; |
| |
| #address-cells = <1>; |
| #size-cells = <1>; |
| status = "okay"; |
| }; |
| |
| compatible: "nuvoton,npcx-espi-taf" |
| |
| include: [espi-controller.yaml, pinctrl-device.yaml] |
| |
| properties: |
| mapped-addr: |
| type: int |
| description: | |
| Mapped memory address of direct read access for flash. |
| required: true |
| |
| erase-sz: |
| type: string |
| required: true |
| description: | |
| Erase block size of target flash. The default was 4KB Erase Block Size. |
| All Intel platforms require support for at least 4 KB Erase Block Size. |
| default: "NPCX_ESPI_TAF_ERASE_BLOCK_SIZE_4KB" |
| enum: |
| - "NPCX_ESPI_TAF_ERASE_BLOCK_SIZE_4KB" |
| - "NPCX_ESPI_TAF_ERASE_BLOCK_SIZE_32KB" |
| - "NPCX_ESPI_TAF_ERASE_BLOCK_SIZE_64KB" |
| - "NPCX_ESPI_TAF_ERASE_BLOCK_SIZE_128KB" |
| |
| max-read-sz: |
| type: string |
| required: true |
| description: | |
| Maximum read request size of flash access channel. The default was 64 bytes. |
| This value is recommended in datasheet. |
| default: "NPCX_ESPI_TAF_MAX_READ_REQ_64B" |
| enum: |
| - "NPCX_ESPI_TAF_MAX_READ_REQ_64B" |
| - "NPCX_ESPI_TAF_MAX_READ_REQ_128B" |
| - "NPCX_ESPI_TAF_MAX_READ_REQ_256B" |
| - "NPCX_ESPI_TAF_MAX_READ_REQ_512B" |
| - "NPCX_ESPI_TAF_MAX_READ_REQ_1024B" |
| - "NPCX_ESPI_TAF_MAX_READ_REQ_2048B" |
| - "NPCX_ESPI_TAF_MAX_READ_REQ_4096B" |
