RTC fields are located in bits [1:0]. Correct the _MASK and _SHIFT
macros to use the appropriate mask and shift.

Fixes: 35f74c0c5dce ("stmmac: add GMAC4 DMA/CORE Header File")
Signed-off-by: Ley Foon Tan <leyfoon.tan@starfivetech.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac4.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
index 93a78fd0737b..acbe5a027c85 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
@@ -389,8 +389,8 @@ static inline u32 mtl_chanx_base_addr(const struct dwmac4_addrs *addrs,
 
 #define MTL_OP_MODE_EHFC		BIT(7)
 
-#define MTL_OP_MODE_RTC_MASK		0x18
-#define MTL_OP_MODE_RTC_SHIFT		3
+#define MTL_OP_MODE_RTC_MASK		GENMASK(1, 0)
+#define MTL_OP_MODE_RTC_SHIFT		0
 
 #define MTL_OP_MODE_RTC_32		(1 << MTL_OP_MODE_RTC_SHIFT)
 #define MTL_OP_MODE_RTC_64		0
-- 
2.34.1