diff options
| -rw-r--r-- | src/soc/amd/picasso/soc_util.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/soc/amd/picasso/soc_util.c b/src/soc/amd/picasso/soc_util.c index 64a97a059e..12129206cf 100644 --- a/src/soc/amd/picasso/soc_util.c +++ b/src/soc/amd/picasso/soc_util.c @@ -9,6 +9,14 @@ #include <soc/soc_util.h> #include <types.h> +/* + * The Zen/Zen+ based APUs can be RV (sometimes called RV1), PCO or RV2 silicon. RV2 has less + * PCIe, USB3 and DisplayPort connectivity than RV(1) or PCO. A Picasso SoC is always PCO + * silicon, a Dali SoC can either be RV2 or fused-down PCO silicon that has the same + * connectivity as the RV2 one and Pollock is always RV2 silicon. Picasso and Dali are in a FP5 + * package while Pollock is in the smaller FT5 package. + */ + #define SOCKET_TYPE_SHIFT 28 #define SOCKET_TYPSE_MASK (0xf << SOCKET_TYPE_SHIFT) |