aboutsummaryrefslogtreecommitdiffstats
path: root/roms/u-boot/include/clk-uclass.h
diff options
context:
space:
mode:
authorAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
committerAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
commitaf1a266670d040d2f4083ff309d732d648afba2a (patch)
tree2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/include/clk-uclass.h
parente02cda008591317b1625707ff8e115a4841aa889 (diff)
Add submodule dependency filesHEADmaster
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/include/clk-uclass.h')
-rw-r--r--roms/u-boot/include/clk-uclass.h111
1 files changed, 111 insertions, 0 deletions
diff --git a/roms/u-boot/include/clk-uclass.h b/roms/u-boot/include/clk-uclass.h
new file mode 100644
index 000000000..50e8681b5
--- /dev/null
+++ b/roms/u-boot/include/clk-uclass.h
@@ -0,0 +1,111 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ * Copyright (c) 2016, NVIDIA CORPORATION.
+ */
+
+#ifndef _CLK_UCLASS_H
+#define _CLK_UCLASS_H
+
+/* See clk.h for background documentation. */
+
+#include <clk.h>
+
+struct ofnode_phandle_args;
+
+/**
+ * struct clk_ops - The functions that a clock driver must implement.
+ */
+struct clk_ops {
+ /**
+ * of_xlate - Translate a client's device-tree (OF) clock specifier.
+ *
+ * The clock core calls this function as the first step in implementing
+ * a client's clk_get_by_*() call.
+ *
+ * If this function pointer is set to NULL, the clock core will use a
+ * default implementation, which assumes #clock-cells = <1>, and that
+ * the DT cell contains a simple integer clock ID.
+ *
+ * At present, the clock API solely supports device-tree. If this
+ * changes, other xxx_xlate() functions may be added to support those
+ * other mechanisms.
+ *
+ * @clock: The clock struct to hold the translation result.
+ * @args: The clock specifier values from device tree.
+ * @return 0 if OK, or a negative error code.
+ */
+ int (*of_xlate)(struct clk *clock,
+ struct ofnode_phandle_args *args);
+ /**
+ * request - Request a translated clock.
+ *
+ * The clock core calls this function as the second step in
+ * implementing a client's clk_get_by_*() call, following a successful
+ * xxx_xlate() call, or as the only step in implementing a client's
+ * clk_request() call.
+ *
+ * @clock: The clock struct to request; this has been fille in by
+ * a previoux xxx_xlate() function call, or by the caller
+ * of clk_request().
+ * @return 0 if OK, or a negative error code.
+ */
+ int (*request)(struct clk *clock);
+ /**
+ * rfree - Free a previously requested clock.
+ *
+ * This is the implementation of the client clk_free() API.
+ *
+ * @clock: The clock to free.
+ * @return 0 if OK, or a negative error code.
+ */
+ int (*rfree)(struct clk *clock);
+ /**
+ * round_rate() - Adjust a rate to the exact rate a clock can provide.
+ *
+ * @clk: The clock to manipulate.
+ * @rate: Desidered clock rate in Hz.
+ * @return rounded rate in Hz, or -ve error code.
+ */
+ ulong (*round_rate)(struct clk *clk, ulong rate);
+ /**
+ * get_rate() - Get current clock rate.
+ *
+ * @clk: The clock to query.
+ * @return clock rate in Hz, or -ve error code
+ */
+ ulong (*get_rate)(struct clk *clk);
+ /**
+ * set_rate() - Set current clock rate.
+ *
+ * @clk: The clock to manipulate.
+ * @rate: New clock rate in Hz.
+ * @return new rate, or -ve error code.
+ */
+ ulong (*set_rate)(struct clk *clk, ulong rate);
+ /**
+ * set_parent() - Set current clock parent
+ *
+ * @clk: The clock to manipulate.
+ * @parent: New clock parent.
+ * @return zero on success, or -ve error code.
+ */
+ int (*set_parent)(struct clk *clk, struct clk *parent);
+ /**
+ * enable() - Enable a clock.
+ *
+ * @clk: The clock to manipulate.
+ * @return zero on success, or -ve error code.
+ */
+ int (*enable)(struct clk *clk);
+ /**
+ * disable() - Disable a clock.
+ *
+ * @clk: The clock to manipulate.
+ * @return zero on success, or -ve error code.
+ */
+ int (*disable)(struct clk *clk);
+};
+
+#endif