upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
1.3 KiB
60 lines
1.3 KiB
/*
|
|
* Copyright (c) 2011 The Chromium OS Authors.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <fdtdec.h>
|
|
#include <malloc.h>
|
|
#include <spi.h>
|
|
|
|
int spi_set_wordlen(struct spi_slave *slave, unsigned int wordlen)
|
|
{
|
|
if (wordlen == 0 || wordlen > 32) {
|
|
printf("spi: invalid wordlen %d\n", wordlen);
|
|
return -1;
|
|
}
|
|
|
|
slave->wordlen = wordlen;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
|
|
unsigned int cs)
|
|
{
|
|
struct spi_slave *slave;
|
|
void *ptr;
|
|
|
|
ptr = malloc(size);
|
|
if (ptr) {
|
|
memset(ptr, '\0', size);
|
|
slave = (struct spi_slave *)(ptr + offset);
|
|
slave->bus = bus;
|
|
slave->cs = cs;
|
|
slave->wordlen = SPI_DEFAULT_WORDLEN;
|
|
}
|
|
|
|
return ptr;
|
|
}
|
|
|
|
#ifdef CONFIG_OF_SPI
|
|
struct spi_slave *spi_base_setup_slave_fdt(const void *blob, int busnum,
|
|
int node)
|
|
{
|
|
int cs, max_hz, mode = 0;
|
|
|
|
cs = fdtdec_get_int(blob, node, "reg", -1);
|
|
max_hz = fdtdec_get_int(blob, node, "spi-max-frequency", 100000);
|
|
if (fdtdec_get_bool(blob, node, "spi-cpol"))
|
|
mode |= SPI_CPOL;
|
|
if (fdtdec_get_bool(blob, node, "spi-cpha"))
|
|
mode |= SPI_CPHA;
|
|
if (fdtdec_get_bool(blob, node, "spi-cs-high"))
|
|
mode |= SPI_CS_HIGH;
|
|
if (fdtdec_get_bool(blob, node, "spi-half-duplex"))
|
|
mode |= SPI_PREAMBLE;
|
|
return spi_setup_slave(busnum, cs, max_hz, mode);
|
|
}
|
|
#endif
|
|
|