net: macb: Fix GEM hardware detection

Fix MID bit field check to correctly identify all GEM hardwares.

The check is updated as per macb driver in Linux location:
<linux_sources>/drivers/net/ethernet/cadence/macb_main.c:259

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index 0254e21..182331f 100644 (file)
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -143,7 +143,7 @@ struct macb_device {
 
 static int macb_is_gem(struct macb_device *macb)
 {
-       return MACB_BFEXT(IDNUM, macb_readl(macb, MID)) == 0x2;
+       return MACB_BFEXT(IDNUM, macb_readl(macb, MID)) >= 0x2;
 }
 
 #ifndef cpu_is_sama5d2