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.
88 lines
2.1 KiB
88 lines
2.1 KiB
/*
|
|
* Command for mmc_spi setup.
|
|
*
|
|
* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
|
|
* Licensed under the GPL-2 or later.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <mmc.h>
|
|
#include <spi.h>
|
|
|
|
#ifndef CONFIG_MMC_SPI_BUS
|
|
# define CONFIG_MMC_SPI_BUS 0
|
|
#endif
|
|
#ifndef CONFIG_MMC_SPI_CS
|
|
# define CONFIG_MMC_SPI_CS 1
|
|
#endif
|
|
/* in SPI mode, MMC speed limit is 20MHz, while SD speed limit is 25MHz */
|
|
#ifndef CONFIG_MMC_SPI_SPEED
|
|
# define CONFIG_MMC_SPI_SPEED 25000000
|
|
#endif
|
|
/* MMC and SD specs only seem to care that sampling is on the
|
|
* rising edge ... meaning SPI modes 0 or 3. So either SPI mode
|
|
* should be legit. We'll use mode 0 since the steady state is 0,
|
|
* which is appropriate for hotplugging, unless the platform data
|
|
* specify mode 3 (if hardware is not compatible to mode 0).
|
|
*/
|
|
#ifndef CONFIG_MMC_SPI_MODE
|
|
# define CONFIG_MMC_SPI_MODE SPI_MODE_0
|
|
#endif
|
|
|
|
static int do_mmc_spi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
uint bus = CONFIG_MMC_SPI_BUS;
|
|
uint cs = CONFIG_MMC_SPI_CS;
|
|
uint speed = CONFIG_MMC_SPI_SPEED;
|
|
uint mode = CONFIG_MMC_SPI_MODE;
|
|
char *endp;
|
|
struct mmc *mmc;
|
|
|
|
if (argc < 2)
|
|
goto usage;
|
|
|
|
cs = simple_strtoul(argv[1], &endp, 0);
|
|
if (*argv[1] == 0 || (*endp != 0 && *endp != ':'))
|
|
goto usage;
|
|
if (*endp == ':') {
|
|
if (endp[1] == 0)
|
|
goto usage;
|
|
bus = cs;
|
|
cs = simple_strtoul(endp + 1, &endp, 0);
|
|
if (*endp != 0)
|
|
goto usage;
|
|
}
|
|
if (argc >= 3) {
|
|
speed = simple_strtoul(argv[2], &endp, 0);
|
|
if (*argv[2] == 0 || *endp != 0)
|
|
goto usage;
|
|
}
|
|
if (argc >= 4) {
|
|
mode = simple_strtoul(argv[3], &endp, 16);
|
|
if (*argv[3] == 0 || *endp != 0)
|
|
goto usage;
|
|
}
|
|
if (!spi_cs_is_valid(bus, cs)) {
|
|
printf("Invalid SPI bus %u cs %u\n", bus, cs);
|
|
return 1;
|
|
}
|
|
|
|
mmc = mmc_spi_init(bus, cs, speed, mode);
|
|
if (!mmc) {
|
|
printf("Failed to create MMC Device\n");
|
|
return 1;
|
|
}
|
|
printf("%s: %d at %u:%u hz %u mode %u\n", mmc->cfg->name, mmc->block_dev.dev,
|
|
bus, cs, speed, mode);
|
|
mmc_init(mmc);
|
|
return 0;
|
|
|
|
usage:
|
|
return CMD_RET_USAGE;
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
mmc_spi, 4, 0, do_mmc_spi,
|
|
"mmc_spi setup",
|
|
"[bus:]cs [hz] [mode] - setup mmc_spi device"
|
|
);
|
|
|