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Diffstat (limited to 'drivers/clk/tegra/cvb.h')
-rw-r--r--drivers/clk/tegra/cvb.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/clk/tegra/cvb.h b/drivers/clk/tegra/cvb.h
new file mode 100644
index 000000000..750095fe9
--- /dev/null
+++ b/drivers/clk/tegra/cvb.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Utility functions for parsing Tegra CVB voltage tables
+ */
+
+#ifndef __DRIVERS_CLK_TEGRA_CVB_H
+#define __DRIVERS_CLK_TEGRA_CVB_H
+
+#include <linux/types.h>
+
+struct device;
+
+#define MAX_DVFS_FREQS 40
+
+struct rail_alignment {
+ int offset_uv;
+ int step_uv;
+};
+
+struct cvb_coefficients {
+ int c0;
+ int c1;
+ int c2;
+};
+
+struct cvb_table_freq_entry {
+ unsigned long freq;
+ struct cvb_coefficients coefficients;
+};
+
+struct cvb_cpu_dfll_data {
+ u32 tune0_low;
+ u32 tune0_high;
+ u32 tune1;
+ unsigned int tune_high_min_millivolts;
+};
+
+struct cvb_table {
+ int speedo_id;
+ int process_id;
+
+ int min_millivolts;
+ int max_millivolts;
+
+ int speedo_scale;
+ int voltage_scale;
+ struct cvb_table_freq_entry entries[MAX_DVFS_FREQS];
+ struct cvb_cpu_dfll_data cpu_dfll_data;
+};
+
+const struct cvb_table *
+tegra_cvb_add_opp_table(struct device *dev, const struct cvb_table *cvb_tables,
+ size_t count, struct rail_alignment *align,
+ int process_id, int speedo_id, int speedo_value,
+ unsigned long max_freq);
+void tegra_cvb_remove_opp_table(struct device *dev,
+ const struct cvb_table *table,
+ unsigned long max_freq);
+
+#endif