mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 21:24:29 +00:00
51cdf83eea
Provide an option in DT to use legacy bch geometry, which compatible with the 3.10 kernel bch setting. To enable the feature, adding "fsl,legacy-bch-geometry" under gpmi-nand node. NOTICE: The feature must be enabled/disabled in both u-boot and kernel. Signed-off-by: Han Xu <han.xu@nxp.com> Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
/*
|
|
* NXP GPMI NAND flash driver (DT initialization)
|
|
*
|
|
* Copyright (C) 2018 Toradex
|
|
* Authors:
|
|
* Stefan Agner <stefan.agner@toradex.com>
|
|
*
|
|
* Based on denali_dt.c
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <dm.h>
|
|
#include <linux/io.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/printk.h>
|
|
|
|
#include <mxs_nand.h>
|
|
|
|
struct mxs_nand_dt_data {
|
|
unsigned int max_ecc_strength_supported;
|
|
};
|
|
|
|
static const struct mxs_nand_dt_data mxs_nand_imx6q_data = {
|
|
.max_ecc_strength_supported = 40,
|
|
};
|
|
|
|
static const struct mxs_nand_dt_data mxs_nand_imx7d_data = {
|
|
.max_ecc_strength_supported = 62,
|
|
};
|
|
|
|
static const struct udevice_id mxs_nand_dt_ids[] = {
|
|
{
|
|
.compatible = "fsl,imx6q-gpmi-nand",
|
|
.data = (unsigned long)&mxs_nand_imx6q_data,
|
|
},
|
|
{
|
|
.compatible = "fsl,imx7d-gpmi-nand",
|
|
.data = (unsigned long)&mxs_nand_imx7d_data,
|
|
},
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static int mxs_nand_dt_probe(struct udevice *dev)
|
|
{
|
|
struct mxs_nand_info *info = dev_get_priv(dev);
|
|
const struct mxs_nand_dt_data *data;
|
|
struct resource res;
|
|
int ret;
|
|
|
|
data = (void *)dev_get_driver_data(dev);
|
|
if (data)
|
|
info->max_ecc_strength_supported = data->max_ecc_strength_supported;
|
|
|
|
info->dev = dev;
|
|
|
|
ret = dev_read_resource_byname(dev, "gpmi-nand", &res);
|
|
if (ret)
|
|
return ret;
|
|
|
|
info->gpmi_regs = devm_ioremap(dev, res.start, resource_size(&res));
|
|
|
|
|
|
ret = dev_read_resource_byname(dev, "bch", &res);
|
|
if (ret)
|
|
return ret;
|
|
|
|
info->bch_regs = devm_ioremap(dev, res.start, resource_size(&res));
|
|
|
|
info->use_minimum_ecc = dev_read_bool(dev, "fsl,use-minimum-ecc");
|
|
|
|
info->legacy_bch_geometry = dev_read_bool(dev, "fsl,legacy-bch-geometry");
|
|
|
|
return mxs_nand_init_ctrl(info);
|
|
}
|
|
|
|
U_BOOT_DRIVER(mxs_nand_dt) = {
|
|
.name = "mxs-nand-dt",
|
|
.id = UCLASS_MTD,
|
|
.of_match = mxs_nand_dt_ids,
|
|
.probe = mxs_nand_dt_probe,
|
|
.priv_auto_alloc_size = sizeof(struct mxs_nand_info),
|
|
};
|
|
|
|
void board_nand_init(void)
|
|
{
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
ret = uclass_get_device_by_driver(UCLASS_MTD,
|
|
DM_GET_DRIVER(mxs_nand_dt),
|
|
&dev);
|
|
if (ret && ret != -ENODEV)
|
|
pr_err("Failed to initialize MXS NAND controller. (error %d)\n",
|
|
ret);
|
|
}
|