tegra186-hsp.h 1.0 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. /*
  3. * This header provides constants for binding nvidia,tegra186-hsp.
  4. */
  5. #ifndef _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H
  6. #define _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H
  7. /*
  8. * These define the type of mailbox that is to be used (doorbell, shared
  9. * mailbox, shared semaphore or arbitrated semaphore).
  10. */
  11. #define TEGRA_HSP_MBOX_TYPE_DB 0x0
  12. #define TEGRA_HSP_MBOX_TYPE_SM 0x1
  13. #define TEGRA_HSP_MBOX_TYPE_SS 0x2
  14. #define TEGRA_HSP_MBOX_TYPE_AS 0x3
  15. /*
  16. * These defines represent the bit associated with the given master ID in the
  17. * doorbell registers.
  18. */
  19. #define TEGRA_HSP_DB_MASTER_CCPLEX 17
  20. #define TEGRA_HSP_DB_MASTER_BPMP 19
  21. /*
  22. * Shared mailboxes are unidirectional, so the direction needs to be specified
  23. * in the device tree.
  24. */
  25. #define TEGRA_HSP_SM_MASK 0x00ffffff
  26. #define TEGRA_HSP_SM_FLAG_RX (0 << 31)
  27. #define TEGRA_HSP_SM_FLAG_TX (1 << 31)
  28. #define TEGRA_HSP_SM_RX(x) (TEGRA_HSP_SM_FLAG_RX | ((x) & TEGRA_HSP_SM_MASK))
  29. #define TEGRA_HSP_SM_TX(x) (TEGRA_HSP_SM_FLAG_TX | ((x) & TEGRA_HSP_SM_MASK))
  30. #endif