[U-Boot] [PATCH 04/26] dts: mtmips: enable high-speed UART support for mt7628

[Weijie Gao]

All three UARTs of mt7628 are actually MediaTek's high-speed UARTs which
support baudrate up to 921600.
The high-speed UART is compatible with ns16550 when baudrate <= 115200.

Add compatible string to dtsi file so u-boot can use it when serial_mtk
driver is built in.

Signed-off-by: Weijie Gao <weijie.gao at mediatek.com>
---
 arch/mips/dts/mt7628a.dtsi | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/mips/dts/mt7628a.dtsi b/arch/mips/dts/mt7628a.dtsi
index 6bc0722b07..e9241a0737 100644
--- a/arch/mips/dts/mt7628a.dtsi
+++ b/arch/mips/dts/mt7628a.dtsi
@@ -124,7 +124,7 @@
 		};
 
 		uart0: uartlite at c00 {
-			compatible = "ns16550a";
+			compatible = "mediatek,hsuart", "ns16550a";
 			reg = <0xc00 0x100>;
 
 			clock-frequency = <40000000>;
@@ -139,7 +139,7 @@
 		};
 
 		uart1: uart1 at d00 {
-			compatible = "ns16550a";
+			compatible = "mediatek,hsuart", "ns16550a";
 			reg = <0xd00 0x100>;
 
 			clock-frequency = <40000000>;
@@ -154,7 +154,7 @@
 		};
 
 		uart2: uart2 at e00 {
-			compatible = "ns16550a";
+			compatible = "mediatek,hsuart", "ns16550a";
 			reg = <0xe00 0x100>;
 
 			clock-frequency = <40000000>;
-- 
2.17.1