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-rw-r--r--drivers/net/ethernet/cadence/macb.h6
-rw-r--r--drivers/net/ethernet/cadence/macb_ptp.c5
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index b3b2a00b620d..98735584570d 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -496,7 +496,11 @@
/* Bitfields in TISUBN */
#define GEM_SUBNSINCR_OFFSET 0
-#define GEM_SUBNSINCR_SIZE 16
+#define GEM_SUBNSINCRL_OFFSET 24
+#define GEM_SUBNSINCRL_SIZE 8
+#define GEM_SUBNSINCRH_OFFSET 0
+#define GEM_SUBNSINCRH_SIZE 16
+#define GEM_SUBNSINCR_SIZE 24
/* Bitfields in TI */
#define GEM_NSINCR_OFFSET 0
diff --git a/drivers/net/ethernet/cadence/macb_ptp.c b/drivers/net/ethernet/cadence/macb_ptp.c
index 6276eac8056b..43a3f0dbf857 100644
--- a/drivers/net/ethernet/cadence/macb_ptp.c
+++ b/drivers/net/ethernet/cadence/macb_ptp.c
@@ -104,7 +104,10 @@ static int gem_tsu_incr_set(struct macb *bp, struct tsu_incr *incr_spec)
* to take effect.
*/
spin_lock_irqsave(&bp->tsu_clk_lock, flags);
- gem_writel(bp, TISUBN, GEM_BF(SUBNSINCR, incr_spec->sub_ns));
+ /* RegBit[15:0] = Subns[23:8]; RegBit[31:24] = Subns[7:0] */
+ gem_writel(bp, TISUBN, GEM_BF(SUBNSINCRL, incr_spec->sub_ns) |
+ GEM_BF(SUBNSINCRH, (incr_spec->sub_ns >>
+ GEM_SUBNSINCRL_SIZE)));
gem_writel(bp, TI, GEM_BF(NSINCR, incr_spec->ns));
spin_unlock_irqrestore(&bp->tsu_clk_lock, flags);