LXR linux/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
  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