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) ||
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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