[PATCH 04/17] spi: ich: Don't require the PCH
Simon Glass
sjg at chromium.org
Wed Apr 7 06:32:14 CEST 2021
When booting from coreboot we may not have a PCH driver available. The
SPI driver can operate without the PCH but currently complains in this
case. Update it to continue to work normally. The only missing feature
is memory-mapping of SPI-flash contents, which is not essential.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
drivers/spi/ich.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c
index 1cd410493b0..3d49c22a9da 100644
--- a/drivers/spi/ich.c
+++ b/drivers/spi/ich.c
@@ -114,7 +114,7 @@ static bool ich9_can_do_33mhz(struct udevice *dev)
struct ich_spi_priv *priv = dev_get_priv(dev);
u32 fdod, speed;
- if (!CONFIG_IS_ENABLED(PCI))
+ if (!CONFIG_IS_ENABLED(PCI) || !priv->pch)
return false;
/* Observe SPI Descriptor Component Section 0 */
dm_pci_write_config32(priv->pch, 0xb0, 0x1000);
@@ -632,7 +632,7 @@ static int ich_spi_get_basics(struct udevice *bus, bool can_probe,
if (device_get_uclass_id(pch) != UCLASS_PCH) {
uclass_first_device(UCLASS_PCH, &pch);
if (!pch)
- return log_msg_ret("uclass", -EPROTOTYPE);
+ ; /* ignore this error since we don't need it */
}
}
--
2.31.0.208.g409f899ff0-goog
More information about the U-Boot
mailing list