diff options
| author | Balamanikandan Gunasundar | 2022-10-25 16:21:04 +0530 |
|---|---|---|
| committer | Eugen Hristev | 2022-12-08 18:06:27 +0200 |
| commit | 68ddf18dc3bd6b9c229bae0f9cf383f7255c0437 (patch) | |
| tree | 9ab09c844d54704a3a38593d4f3a50061cc69257 /drivers/memory | |
| parent | de32a2a32aec6ba82fc60c15bef4750ee6729826 (diff) | |
memory: atmel-ebi: add Atmel EBI (External Bus Interface) driver
The EBI is used to access peripherals like NAND, SRAM, NOR etc. Add
this driver to probe the nand flash controller. This is a dummy driver
and not yet a complete device driver for EBI.
Signed-off-by: Balamanikandan Gunasundar <balamanikandan.gunasundar@microchip.com>
Diffstat (limited to 'drivers/memory')
| -rw-r--r-- | drivers/memory/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/memory/Makefile | 1 | ||||
| -rw-r--r-- | drivers/memory/atmel_ebi.c | 37 |
3 files changed, 45 insertions, 0 deletions
diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig index 56b89f17be5..22cb9d637c5 100644 --- a/drivers/memory/Kconfig +++ b/drivers/memory/Kconfig @@ -13,6 +13,13 @@ config MEMORY SRAM, Ethernet adapters, FPGAs, etc. For now this uclass has no methods yet. +config ATMEL_EBI + bool "Support for Atmel EBI" + help + Driver for Atmel EBI controller. This is a dummy + driver. Doesn't provide an access to EBI controller. Select + this option to enable the NAND flash controller driver + config SANDBOX_MEMORY bool "Enable Sandbox Memory Controller driver" depends on SANDBOX && MEMORY diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile index 2b196d78c0b..1cabf8ac9cd 100644 --- a/drivers/memory/Makefile +++ b/drivers/memory/Makefile @@ -2,5 +2,6 @@ obj-$(CONFIG_MEMORY) += memory-uclass.o obj-$(CONFIG_SANDBOX_MEMORY) += memory-sandbox.o obj-$(CONFIG_STM32_FMC2_EBI) += stm32-fmc2-ebi.o +obj-$(CONFIG_ATMEL_EBI) += atmel_ebi.o obj-$(CONFIG_TI_AEMIF) += ti-aemif.o obj-$(CONFIG_TI_GPMC) += ti-gpmc.o diff --git a/drivers/memory/atmel_ebi.c b/drivers/memory/atmel_ebi.c new file mode 100644 index 00000000000..4739eef1b75 --- /dev/null +++ b/drivers/memory/atmel_ebi.c @@ -0,0 +1,37 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2022 Microchip Technology Inc. and its subsidiaries + */ + +#include <dm/device.h> +#include <dm/read.h> +#include <dm/uclass.h> +#include <fdtdec.h> + +static int atmel_ebi_probe(struct udevice *dev) +{ + int ret; + struct udevice *ndev; + + ret = uclass_get_device_by_driver(UCLASS_MTD, + DM_DRIVER_GET(atmel_nand_controller), + &ndev); + if (ret) + printf("Failed to probe nand driver (err = %d)\n", ret); + + return ret; +} + +static const struct udevice_id atmel_ebi_match[] = { + {.compatible = "microchip,sam9x60-ebi"}, + {.compatible = "atmel,sama5d3-ebi"}, + { /* Sentinel */ } +}; + +U_BOOT_DRIVER(atmel_ebi) = { + .name = "atmel_ebi", + .id = UCLASS_NOP, + .of_match = atmel_ebi_match, + .probe = atmel_ebi_probe, + .bind = dm_scan_fdt_dev, +}; |