Hi Simon and All,
SPI-NOR with MTD uclass framework, we need to probe the two different uclass drivers from command like UCLASS_SPI and UCLASS_MTD
UCLASS_SPI: will detect the spi drivers from drivers/spi and probe the m25p80 flash UCLASS_MTD: will detect the spi-nor drivers from drivers/mtd/spi-nor and probe the flash. like this: spi0 = &spi1; mtd1 = &qspi;
I have written a sample routine to move the respective frameworks like spi and spi-nor, so based on the command bus number the respective driver need to probe.
Issue here is if I use 'sf probe 1' it's probing the MTD uclass but the UCLASS_SPI error message is showing as "Invalid bus 0"
Did you ever handling this kind of dual probe? I couldn't find it on the source? any suggestions?
sample code: -------------------- int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs, unsigned int max_hz, unsigned int spi_mode, struct udevice **devp) { struct spi_slave *slave; struct dm_mtd_ops *ops; struct udevice *bus; char name[30], *str; int ret;
printf("Probe for SPI\n"); snprintf(name, sizeof(name), "spi-nor@%d:%d", busnum, cs); str = strdup(name); ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode, "m25p80", str, &bus, &slave); if (!ret) { *devp = slave->dev; return 0; }
printf("Probe for MTD\n"); ret = uclass_get_device_by_seq(UCLASS_MTD, busnum, &bus); if (ret) { printf("Invalid bus %d (err=%d)\n", busnum, ret); return ret; }
ops = mtd_get_ops(bus); ret = ops->probe_dev(bus); if (ret) return ret;
*devp = bus; return 0; }