Hi!
There's one more "funny" thing I see with SPI: SPL fails to boot if I let it do full probing, or if I allow it to do reads in big chunks (that may be explained by watchdog, I'll investigate it some more).
This makes SPL work for me, but I guess I'd like to understand why.
Ideas welcome.
Best regards, Pavel
--- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -515,6 +520,7 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset, #endif remain_len = ((SPI_FLASH_16MB_BOUN << flash->shift) * (bank_sel + 1)) - offset; + remain_len = 32768; if (len < remain_len) read_len = len; else @@ -1176,23 +1178,28 @@ int spi_flash_scan(struct spi_flash *flash) /* Now erase size becomes valid sector size */ flash->sector_size = flash->erase_size;
+#ifndef CONFIG_SPL_BUILD /* Look for the fastest read cmd */ cmd = fls(params->e_rd_cmd & spi->mode_rx); if (cmd) { cmd = spi_read_cmds_array[cmd - 1]; flash->read_cmd = cmd; } else { +#endif /* Go for default supported read cmd */ flash->read_cmd = CMD_READ_ARRAY_FAST; +#ifndef CONFIG_SPL_BUILD } - /* Not require to look for fastest only two write cmds yet */ if (params->flags & WR_QPP && spi->mode & SPI_TX_QUAD) flash->write_cmd = CMD_QUAD_PAGE_PROGRAM; else +#endif /* Go for default supported write cmd */ flash->write_cmd = CMD_PAGE_PROGRAM;
+ /* Why are we even probing writes? SPL should not write anywhere... */ + /* Set the quad enable bit - only for quad commands */ if ((flash->read_cmd == CMD_READ_QUAD_OUTPUT_FAST) || (flash->read_cmd == CMD_READ_QUAD_IO_FAST) ||