spi: ich: Don't require the PCH
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@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c
index 1cd4104..3d49c22 100644
--- a/drivers/spi/ich.c
+++ b/drivers/spi/ich.c
@@ -114,7 +114,7 @@
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 @@
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 */
}
}