arch/arm/mach-lpc32xx/phy3250.c

   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, 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