93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Platform support for LPC32xx SoC
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*
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* Author: Kevin Wells <kevin.wells@nxp.com>
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*
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* Copyright (C) 2012 Roland Stigge <stigge@antcom.de>
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* Copyright (C) 2010 NXP Semiconductors
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*/
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#include <linux/amba/pl08x.h>
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#include <linux/mtd/lpc32xx_mlc.h>
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#include <linux/mtd/lpc32xx_slc.h>
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#include <linux/of_platform.h>
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#include <asm/mach/arch.h>
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#include "common.h"
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static struct pl08x_channel_data pl08x_slave_channels[] = {
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{
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.bus_id = "nand-slc",
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.min_signal = 1, /* SLC NAND Flash */
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.max_signal = 1,
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.periph_buses = PL08X_AHB1,
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},
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{
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.bus_id = "nand-mlc",
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.min_signal = 12, /* MLC NAND Flash */
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.max_signal = 12,
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.periph_buses = PL08X_AHB1,
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},
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};
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static int pl08x_get_signal(const struct pl08x_channel_data *cd)
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{
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return cd->min_signal;
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}
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static void pl08x_put_signal(const struct pl08x_channel_data *cd, int ch)
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{
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}
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static struct pl08x_platform_data pl08x_pd = {
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/* Some reasonable memcpy defaults */
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.memcpy_burst_size = PL08X_BURST_SZ_256,
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.memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
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.slave_channels = &pl08x_slave_channels[0],
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.num_slave_channels = ARRAY_SIZE(pl08x_slave_channels),
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.get_xfer_signal = pl08x_get_signal,
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.put_xfer_signal = pl08x_put_signal,
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.lli_buses = PL08X_AHB1,
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.mem_buses = PL08X_AHB1,
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};
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static struct lpc32xx_slc_platform_data lpc32xx_slc_data = {
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.dma_filter = pl08x_filter_id,
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};
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static struct lpc32xx_mlc_platform_data lpc32xx_mlc_data = {
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.dma_filter = pl08x_filter_id,
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};
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static const struct of_dev_auxdata lpc32xx_auxdata_lookup[] __initconst = {
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OF_DEV_AUXDATA("arm,pl080", 0x31000000, "pl08xdmac", &pl08x_pd),
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OF_DEV_AUXDATA("nxp,lpc3220-slc", 0x20020000, "20020000.flash",
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&lpc32xx_slc_data),
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OF_DEV_AUXDATA("nxp,lpc3220-mlc", 0x200a8000, "200a8000.flash",
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&lpc32xx_mlc_data),
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{ }
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};
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static void __init lpc3250_machine_init(void)
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{
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lpc32xx_serial_init();
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of_platform_default_populate(NULL, lpc32xx_auxdata_lookup, NULL);
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}
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static const char *const lpc32xx_dt_compat[] __initconst = {
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"nxp,lpc3220",
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"nxp,lpc3230",
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"nxp,lpc3240",
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"nxp,lpc3250",
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NULL
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};
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DT_MACHINE_START(LPC32XX_DT, "LPC32XX SoC (Flattened Device Tree)")
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.atag_offset = 0x100,
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.map_io = lpc32xx_map_io,
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.init_machine = lpc3250_machine_init,
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.dt_compat = lpc32xx_dt_compat,
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MACHINE_END
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