update for open source

lib/rp2040/hardware/structs/rosc.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef _HARDWARE_STRUCTS_ROSC_H
+#define _HARDWARE_STRUCTS_ROSC_H
+
+#include "hardware/address_mapped.h"
+#include "hardware/platform_defs.h"
+#include "hardware/regs/rosc.h"
+
+typedef struct {
+    io_rw_32 ctrl;
+    io_rw_32 freqa;
+    io_rw_32 freqb;
+    io_rw_32 dormant;
+    io_rw_32 div;
+    io_rw_32 phase;
+    io_rw_32 status;
+    io_rw_32 randombit;
+    io_rw_32 count;
+    io_rw_32 dftx;
+} rosc_hw_t;
+
+#define rosc_hw ((rosc_hw_t *const)ROSC_BASE)
+
+#endif