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path: root/src/mainboard/google/guybrush/bootblock.c
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Diffstat (limited to 'src/mainboard/google/guybrush/bootblock.c')
-rw-r--r--src/mainboard/google/guybrush/bootblock.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mainboard/google/guybrush/bootblock.c b/src/mainboard/google/guybrush/bootblock.c
index 4a0d384660..83ac43ac41 100644
--- a/src/mainboard/google/guybrush/bootblock.c
+++ b/src/mainboard/google/guybrush/bootblock.c
@@ -34,6 +34,8 @@ void bootblock_mainboard_early_init(void)
size_t base_num_gpios, override_num_gpios;
const struct soc_amd_gpio *base_gpios, *override_gpios;
+ /* Beware that the bit definitions for LPC_LDRQ0_PU_EN and LPC_LDRQ0_PD_EN are swapped
+ on Picasso and older compared to Renoir/Cezanne and newer */
dword = pci_read_config32(SOC_LPC_DEV, LPC_MISC_CONTROL_BITS);
dword &= ~(LPC_LDRQ0_PU_EN | LPC_LDRQ1_EN | LPC_LDRQ0_EN);
dword |= LPC_LDRQ0_PD_EN;