To use mmio32, we also need to set regshift.

Signed-off-by: Hsin-Yi Wang <hsi...@chromium.org>
---
Change:
v1->v2: none
---
 drivers/tty/serial/8250/8250_mtk.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/8250/8250_mtk.c 
b/drivers/tty/serial/8250/8250_mtk.c
index 7b0dec14c8b80..41f4120abdf29 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -669,6 +669,7 @@ static int __init early_mtk8250_setup(struct 
earlycon_device *device,
                return -ENODEV;
 
        device->port.iotype = UPIO_MEM32;
+       device->port.regshift = 2;
 
        return early_serial8250_setup(device, NULL);
 }
-- 
2.28.0.618.gf4bc123cb7-goog

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