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SPI: Split writes using spi_crop_chunk()

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SPI controllers in Intel and AMD bridges have a slightly different
restriction on how long transactions they can handle.

Change-Id: I3d149d4b7e7e9633482a153d5e380a86c553d871
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/6163
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
This commit is contained in:
Kyösti Mälkki
2014-06-29 16:17:33 +03:00
parent 77d1280d0c
commit 1110495de9
13 changed files with 45 additions and 24 deletions
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4
src/drivers/spi/amic.c
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@ -82,7 +82,7 @@ static int amic_write(struct spi_flash *flash,
for (actual = 0; actual < len; actual += chunk_len) {
chunk_len = min(len - actual, page_size - byte_addr);
chunk_len = min(chunk_len, CONTROLLER_PAGE_LIMIT);
chunk_len = spi_crop_chunk(sizeof(cmd), chunk_len);
cmd[0] = CMD_A25_PP;
cmd[1] = (offset >> 16) & 0xff;
@ -100,7 +100,7 @@ static int amic_write(struct spi_flash *flash,
goto out;
}
ret = spi_flash_cmd_write(flash->spi, cmd, 4,
ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd),
buf + actual, chunk_len);
if (ret < 0) {
printk(BIOS_WARNING, "SF: AMIC Page Program failed\n");