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mtd: rawnand: fsl_elbc: Add device tree support

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This allows boards to specify NAND settings via standard DT properties.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
This commit is contained in:
Pali Rohár 2022-04-04 18:17:19 +02:00 • committed by Priyanka Jain
parent 974f66a470
commit da98ddaf73
2 changed files with 44 additions and 2 deletions
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4
drivers/mtd/nand/raw/Kconfig
View file

@ -158,6 +158,10 @@ config NAND_FSL_ELBC
help
Enable the Freescale Enhanced Local Bus Controller FCM NAND driver.
config NAND_FSL_ELBC_DT
bool "Support Freescale Enhanced Local Bus Controller FCM NAND driver (DT mode)"
depends on NAND_FSL_ELBC
config NAND_FSL_IFC
bool "Support Freescale Integrated Flash Controller NAND driver"
select TPL_SYS_NAND_SELF_INIT if TPL_NAND_SUPPORT

42
drivers/mtd/nand/raw/fsl_elbc_nand.c
View file

@ -20,6 +20,10 @@
#include <asm/io.h>
#include <linux/errno.h>
#ifdef CONFIG_NAND_FSL_ELBC_DT
#include <dm/read.h>
#endif
#ifdef VERBOSE_DEBUG
#define DEBUG_ELBC
#define vdbg(format, arg...) printf("DEBUG: " format, ##arg)
@ -664,7 +668,7 @@ static void fsl_elbc_ctrl_init(void)
elbc_ctrl->addr = NULL;
}
static int fsl_elbc_chip_init(int devnum, u8 *addr)
static int fsl_elbc_chip_init(int devnum, u8 *addr, ofnode flash_node)
{
struct mtd_info *mtd;
struct nand_chip *nand;
@ -712,6 +716,8 @@ static int fsl_elbc_chip_init(int devnum, u8 *addr)
elbc_ctrl->chips[priv->bank] = priv;
/* fill in nand_chip structure */
nand->flash_node = flash_node;
/* set up function call table */
nand->read_byte = fsl_elbc_read_byte;
nand->write_buf = fsl_elbc_write_buf;
@ -804,6 +810,8 @@ static int fsl_elbc_chip_init(int devnum, u8 *addr)
return 0;
}
#ifndef CONFIG_NAND_FSL_ELBC_DT
#ifndef CONFIG_SYS_NAND_BASE_LIST
#define CONFIG_SYS_NAND_BASE_LIST { CONFIG_SYS_NAND_BASE }
#endif
@ -816,5 +824,35 @@ void board_nand_init(void)
int i;
for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
fsl_elbc_chip_init(i, (u8 *)base_address[i]);
fsl_elbc_chip_init(i, (u8 *)base_address[i], ofnode_null());
}
#else
static int fsl_elbc_nand_probe(struct udevice *dev)
{
return fsl_elbc_chip_init(0, (void *)dev_read_addr(dev), dev_ofnode(dev));
}
static const struct udevice_id fsl_elbc_nand_dt_ids[] = {
{ .compatible = "fsl,elbc-fcm-nand", },
{}
};
U_BOOT_DRIVER(fsl_elbc_nand) = {
.name = "fsl_elbc_nand",
.id = UCLASS_MTD,
.of_match = fsl_elbc_nand_dt_ids,
.probe = fsl_elbc_nand_probe,
};
void board_nand_init(void)
{
struct udevice *dev;
int ret;
ret = uclass_get_device_by_driver(UCLASS_MTD, DM_DRIVER_GET(fsl_elbc_nand), &dev);
if (ret && ret != -ENODEV)
printf("Failed to initialize fsl_elbc_nand NAND controller. (error %d)\n", ret);
}
#endif