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 | |
19 | static 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 | |
34 | static int pl08x_get_signal(const struct pl08x_channel_data *cd) |
35 | { |
36 | return cd->min_signal; |
37 | } |
38 | |
39 | static void pl08x_put_signal(const struct pl08x_channel_data *cd, int ch) |
40 | { |
41 | } |
42 | |
43 | static 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 | |
55 | static struct lpc32xx_slc_platform_data lpc32xx_slc_data = { |
56 | .dma_filter = pl08x_filter_id, |
57 | }; |
58 | |
59 | static struct lpc32xx_mlc_platform_data lpc32xx_mlc_data = { |
60 | .dma_filter = pl08x_filter_id, |
61 | }; |
62 | |
63 | static 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 | |
72 | static void __init lpc3250_machine_init(void) |
73 | { |
74 | lpc32xx_serial_init(); |
75 | |
76 | of_platform_default_populate(NULL, lookup: lpc32xx_auxdata_lookup, NULL); |
77 | } |
78 | |
79 | static const char *const lpc32xx_dt_compat[] __initconst = { |
80 | "nxp,lpc3220" , |
81 | "nxp,lpc3230" , |
82 | "nxp,lpc3240" , |
83 | "nxp,lpc3250" , |
84 | NULL |
85 | }; |
86 | |
87 | DT_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, |
92 | MACHINE_END |
93 | |