feat(clk): add a minimal clock framework
This is mainly a clock interface with clk_ops callbacks.
Those callbacks are: enable, disable, get_rate, set_parent,
and is_enabled.
This framework is compiled for STM32MP1.
Change-Id: I5119a2aeaf103ceaae7a60d9e423caf0c148d794
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
diff --git a/include/drivers/clk.h b/include/drivers/clk.h
new file mode 100644
index 0000000..a18f41f
--- /dev/null
+++ b/include/drivers/clk.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2021, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef CLK_H
+#define CLK_H
+
+#include <stdbool.h>
+
+struct clk_ops {
+ int (*enable)(unsigned long id);
+ void (*disable)(unsigned long id);
+ unsigned long (*get_rate)(unsigned long id);
+ int (*get_parent)(unsigned long id);
+ bool (*is_enabled)(unsigned long id);
+};
+
+int clk_enable(unsigned long id);
+void clk_disable(unsigned long id);
+unsigned long clk_get_rate(unsigned long id);
+bool clk_is_enabled(unsigned long id);
+int clk_get_parent(unsigned long id);
+
+void clk_register(const struct clk_ops *ops);
+
+#endif /* CLK_H */