According to the hw architect, pre-ZEN parts support
p2p writes and ZEN parts support both p2p reads and writes.

Add entries for Zen parts Raven (0x15d0) and Renoir (0x1630).

Cc: Christian König <christian.koe...@amd.com>
Acked-by: Christian König <christian.koe...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
 drivers/pci/p2pdma.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index 9a8a38384121..91a4c987399d 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -282,6 +282,8 @@ static const struct pci_p2pdma_whitelist_entry {
 } pci_p2pdma_whitelist[] = {
        /* AMD ZEN */
        {PCI_VENDOR_ID_AMD,     0x1450, 0},
+       {PCI_VENDOR_ID_AMD,     0x15d0, 0},
+       {PCI_VENDOR_ID_AMD,     0x1630, 0},
 
        /* Intel Xeon E5/Core i7 */
        {PCI_VENDOR_ID_INTEL,   0x3c00, REQ_SAME_HOST_BRIDGE},
-- 
2.25.1

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