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/* SPDX-License-Identifier: MIT */
#ifndef TUNABLES_H
#define TUNABLES_H
#include "types.h"
/*
* This function applies the tunables usually passed in the node "tunable".
* They usually apply to multiple entries from the "reg" node.
*
* Example usage for the USB DRD node:
* tunables_apply_global("/arm-io/usb-drd0", "tunable");
*/
int tunables_apply_global(const char *path, const char *prop);
/*
* This function applies the tunables specified in device-specific tunable properties.
* These only apply to a single MMIO region from the "reg" node which needs to
* be specified.
*
* Example usage for two tunables from the USB DRD DART node:
* tunables_apply_local("/arm-io/dart-usb0", "dart-tunables-instance-0", 0);
* tunables_apply_local("/arm-io/dart-usb0", "dart-tunables-instance-1", 1);
*
*/
int tunables_apply_local(const char *path, const char *prop, u32 reg_idx);
/*
* This functions does the same as tunables_apply_local except that it allows
* to specify the base address to which the tunables will be applied to instead
* of extracting it from the "regs" property.
*
* Example usage for two tunables for the USB DRD DART node:
* tunables_apply_local_addr("/arm-io/dart-usb0", "dart-tunables-instance-0", 0x382f00000);
* tunables_apply_local_addr("/arm-io/dart-usb0", "dart-tunables-instance-1", 0x382f80000);
*/
int tunables_apply_local_addr(const char *path, const char *prop, uintptr_t base);
int tunables_apply_static(void);
#endif
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