v4.19.13 snapshot.
diff --git a/include/linux/altera_uart.h b/include/linux/altera_uart.h
new file mode 100644
index 0000000..3eb73b8
--- /dev/null
+++ b/include/linux/altera_uart.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * altera_uart.h -- Altera UART driver defines.
+ */
+
+#ifndef __ALTUART_H
+#define __ALTUART_H
+
+struct altera_uart_platform_uart {
+ unsigned long mapbase; /* Physical address base */
+ unsigned int irq; /* Interrupt vector */
+ unsigned int uartclk; /* UART clock rate */
+ unsigned int bus_shift; /* Bus shift (address stride) */
+};
+
+#endif /* __ALTUART_H */