1*a430fa06SMiquel Raynal /*
2*a430fa06SMiquel Raynal * NXP GPMI NAND flash driver (DT initialization)
3*a430fa06SMiquel Raynal *
4*a430fa06SMiquel Raynal * Copyright (C) 2018 Toradex
5*a430fa06SMiquel Raynal * Authors:
6*a430fa06SMiquel Raynal * Stefan Agner <stefan.agner@toradex.com>
7*a430fa06SMiquel Raynal *
8*a430fa06SMiquel Raynal * Based on denali_dt.c
9*a430fa06SMiquel Raynal *
10*a430fa06SMiquel Raynal * SPDX-License-Identifier: GPL-2.0+
11*a430fa06SMiquel Raynal */
12*a430fa06SMiquel Raynal
13*a430fa06SMiquel Raynal #include <dm.h>
14*a430fa06SMiquel Raynal #include <linux/io.h>
15*a430fa06SMiquel Raynal #include <linux/ioport.h>
16*a430fa06SMiquel Raynal #include <linux/printk.h>
17*a430fa06SMiquel Raynal
18*a430fa06SMiquel Raynal #include "mxs_nand.h"
19*a430fa06SMiquel Raynal
20*a430fa06SMiquel Raynal struct mxs_nand_dt_data {
21*a430fa06SMiquel Raynal unsigned int max_ecc_strength_supported;
22*a430fa06SMiquel Raynal };
23*a430fa06SMiquel Raynal
24*a430fa06SMiquel Raynal static const struct mxs_nand_dt_data mxs_nand_imx6q_data = {
25*a430fa06SMiquel Raynal .max_ecc_strength_supported = 40,
26*a430fa06SMiquel Raynal };
27*a430fa06SMiquel Raynal
28*a430fa06SMiquel Raynal static const struct mxs_nand_dt_data mxs_nand_imx7d_data = {
29*a430fa06SMiquel Raynal .max_ecc_strength_supported = 62,
30*a430fa06SMiquel Raynal };
31*a430fa06SMiquel Raynal
32*a430fa06SMiquel Raynal static const struct udevice_id mxs_nand_dt_ids[] = {
33*a430fa06SMiquel Raynal {
34*a430fa06SMiquel Raynal .compatible = "fsl,imx6q-gpmi-nand",
35*a430fa06SMiquel Raynal .data = (unsigned long)&mxs_nand_imx6q_data,
36*a430fa06SMiquel Raynal },
37*a430fa06SMiquel Raynal {
38*a430fa06SMiquel Raynal .compatible = "fsl,imx7d-gpmi-nand",
39*a430fa06SMiquel Raynal .data = (unsigned long)&mxs_nand_imx7d_data,
40*a430fa06SMiquel Raynal },
41*a430fa06SMiquel Raynal { /* sentinel */ }
42*a430fa06SMiquel Raynal };
43*a430fa06SMiquel Raynal
mxs_nand_dt_probe(struct udevice * dev)44*a430fa06SMiquel Raynal static int mxs_nand_dt_probe(struct udevice *dev)
45*a430fa06SMiquel Raynal {
46*a430fa06SMiquel Raynal struct mxs_nand_info *info = dev_get_priv(dev);
47*a430fa06SMiquel Raynal const struct mxs_nand_dt_data *data;
48*a430fa06SMiquel Raynal struct resource res;
49*a430fa06SMiquel Raynal int ret;
50*a430fa06SMiquel Raynal
51*a430fa06SMiquel Raynal data = (void *)dev_get_driver_data(dev);
52*a430fa06SMiquel Raynal if (data)
53*a430fa06SMiquel Raynal info->max_ecc_strength_supported = data->max_ecc_strength_supported;
54*a430fa06SMiquel Raynal
55*a430fa06SMiquel Raynal info->dev = dev;
56*a430fa06SMiquel Raynal
57*a430fa06SMiquel Raynal ret = dev_read_resource_byname(dev, "gpmi-nand", &res);
58*a430fa06SMiquel Raynal if (ret)
59*a430fa06SMiquel Raynal return ret;
60*a430fa06SMiquel Raynal
61*a430fa06SMiquel Raynal info->gpmi_regs = devm_ioremap(dev, res.start, resource_size(&res));
62*a430fa06SMiquel Raynal
63*a430fa06SMiquel Raynal
64*a430fa06SMiquel Raynal ret = dev_read_resource_byname(dev, "bch", &res);
65*a430fa06SMiquel Raynal if (ret)
66*a430fa06SMiquel Raynal return ret;
67*a430fa06SMiquel Raynal
68*a430fa06SMiquel Raynal info->bch_regs = devm_ioremap(dev, res.start, resource_size(&res));
69*a430fa06SMiquel Raynal
70*a430fa06SMiquel Raynal info->use_minimum_ecc = dev_read_bool(dev, "fsl,use-minimum-ecc");
71*a430fa06SMiquel Raynal
72*a430fa06SMiquel Raynal return mxs_nand_init_ctrl(info);
73*a430fa06SMiquel Raynal }
74*a430fa06SMiquel Raynal
75*a430fa06SMiquel Raynal U_BOOT_DRIVER(mxs_nand_dt) = {
76*a430fa06SMiquel Raynal .name = "mxs-nand-dt",
77*a430fa06SMiquel Raynal .id = UCLASS_MTD,
78*a430fa06SMiquel Raynal .of_match = mxs_nand_dt_ids,
79*a430fa06SMiquel Raynal .probe = mxs_nand_dt_probe,
80*a430fa06SMiquel Raynal .priv_auto_alloc_size = sizeof(struct mxs_nand_info),
81*a430fa06SMiquel Raynal };
82*a430fa06SMiquel Raynal
board_nand_init(void)83*a430fa06SMiquel Raynal void board_nand_init(void)
84*a430fa06SMiquel Raynal {
85*a430fa06SMiquel Raynal struct udevice *dev;
86*a430fa06SMiquel Raynal int ret;
87*a430fa06SMiquel Raynal
88*a430fa06SMiquel Raynal ret = uclass_get_device_by_driver(UCLASS_MTD,
89*a430fa06SMiquel Raynal DM_GET_DRIVER(mxs_nand_dt),
90*a430fa06SMiquel Raynal &dev);
91*a430fa06SMiquel Raynal if (ret && ret != -ENODEV)
92*a430fa06SMiquel Raynal pr_err("Failed to initialize MXS NAND controller. (error %d)\n",
93*a430fa06SMiquel Raynal ret);
94*a430fa06SMiquel Raynal }
95