1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Platform support for LPC32xx SoC
4 *
5 * Author: Kevin Wells <kevin.wells@nxp.com>
6 *
7 * Copyright (C) 2012 Roland Stigge <stigge@antcom.de>
8 * Copyright (C) 2010 NXP Semiconductors
9 */
10
11#include <linux/amba/pl08x.h>
12#include <linux/mtd/lpc32xx_mlc.h>
13#include <linux/mtd/lpc32xx_slc.h>
14#include <linux/of_platform.h>
15
16#include <asm/mach/arch.h>
17#include "common.h"
18
19static struct pl08x_channel_data pl08x_slave_channels[] = {
20	{
21		.bus_id = "nand-slc",
22		.min_signal = 1, /* SLC NAND Flash */
23		.max_signal = 1,
24		.periph_buses = PL08X_AHB1,
25	},
26	{
27		.bus_id = "nand-mlc",
28		.min_signal = 12, /* MLC NAND Flash */
29		.max_signal = 12,
30		.periph_buses = PL08X_AHB1,
31	},
32};
33
34static int pl08x_get_signal(const struct pl08x_channel_data *cd)
35{
36	return cd->min_signal;
37}
38
39static void pl08x_put_signal(const struct pl08x_channel_data *cd, int ch)
40{
41}
42
43static struct pl08x_platform_data pl08x_pd = {
44	/* Some reasonable memcpy defaults */
45	.memcpy_burst_size = PL08X_BURST_SZ_256,
46	.memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
47	.slave_channels = &pl08x_slave_channels[0],
48	.num_slave_channels = ARRAY_SIZE(pl08x_slave_channels),
49	.get_xfer_signal = pl08x_get_signal,
50	.put_xfer_signal = pl08x_put_signal,
51	.lli_buses = PL08X_AHB1,
52	.mem_buses = PL08X_AHB1,
53};
54
55static struct lpc32xx_slc_platform_data lpc32xx_slc_data = {
56	.dma_filter = pl08x_filter_id,
57};
58
59static struct lpc32xx_mlc_platform_data lpc32xx_mlc_data = {
60	.dma_filter = pl08x_filter_id,
61};
62
63static const struct of_dev_auxdata lpc32xx_auxdata_lookup[] __initconst = {
64	OF_DEV_AUXDATA("arm,pl080", 0x31000000, "pl08xdmac", &pl08x_pd),
65	OF_DEV_AUXDATA("nxp,lpc3220-slc", 0x20020000, "20020000.flash",
66		       &lpc32xx_slc_data),
67	OF_DEV_AUXDATA("nxp,lpc3220-mlc", 0x200a8000, "200a8000.flash",
68		       &lpc32xx_mlc_data),
69	{ }
70};
71
72static void __init lpc3250_machine_init(void)
73{
74	lpc32xx_serial_init();
75
76	of_platform_default_populate(NULL, lpc32xx_auxdata_lookup, NULL);
77}
78
79static const char *const lpc32xx_dt_compat[] __initconst = {
80	"nxp,lpc3220",
81	"nxp,lpc3230",
82	"nxp,lpc3240",
83	"nxp,lpc3250",
84	NULL
85};
86
87DT_MACHINE_START(LPC32XX_DT, "LPC32XX SoC (Flattened Device Tree)")
88	.atag_offset	= 0x100,
89	.map_io		= lpc32xx_map_io,
90	.init_machine	= lpc3250_machine_init,
91	.dt_compat	= lpc32xx_dt_compat,
92MACHINE_END
93