u-boot/cmd/mmc_spi.c

5  * Licensed under the GPL-2 or later.
23  * rising edge ... meaning SPI modes 0 or 3.  So either SPI mode
26  * specify mode 3 (if hardware is not compatible to mode 0).
35 	uint cs = CONFIG_MMC_SPI_CS;  in do_mmc_spi()  local
44 	cs = simple_strtoul(argv[1], &endp, 0);  in do_mmc_spi()
50 		bus = cs;  in do_mmc_spi()
51 		cs = simple_strtoul(endp + 1, &endp, 0);  in do_mmc_spi()
55 	if (argc >= 3) {  in do_mmc_spi()
61 		mode = simple_strtoul(argv[3], &endp, 16);  in do_mmc_spi()
62 		if (*argv[3] == 0 || *endp != 0)  in do_mmc_spi()
65 	if (!spi_cs_is_valid(bus, cs)) {  in do_mmc_spi()
66 		printf("Invalid SPI bus %u cs %u\n", bus, cs);  in do_mmc_spi()
70 	mmc = mmc_spi_init(bus, cs, speed, mode);  in do_mmc_spi()
75 	printf("%s: %d at %u:%u hz %u mode %u\n", mmc->cfg->name,  in do_mmc_spi()
76 	       mmc->block_dev.devnum, bus, cs, speed, mode);  in do_mmc_spi()
87 	"[bus:]cs [hz] [mode]	- setup mmc_spi device"