soc/amd/common/block/lpc: Don't disable the HOG bit
According to the AMD FCH architects, we should be using the default
value for the NO_HOG bit. This fixes a problem where the SPI DMA no
longer functions after the LPC init runs.
BUG=b:179699789, b:192373221
TEST=Boot guybrush and see SPI DMA working
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: If015869657f36d3533f4ab9ebd1f54b0d4eb283a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56233
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
diff --git a/src/soc/amd/common/block/lpc/lpc.c b/src/soc/amd/common/block/lpc/lpc.c
index 2586ba9..3027aae 100644
--- a/src/soc/amd/common/block/lpc/lpc.c
+++ b/src/soc/amd/common/block/lpc/lpc.c
@@ -61,12 +61,6 @@
/* BIT 1 is not defined in public datasheet. */
byte &= ~(1 << 1);
- /*
- * Keep the old way. i.e., when bus master/DMA cycle is going
- * on on LPC, it holds PCI grant, so no LPC slave cycle can
- * interrupt and visit LPC.
- */
- byte &= ~LPC_NOHOG;
pci_write_config8(dev, LPC_MISC_CONTROL_BITS, byte);
/*