| Tom Rini | 614edd8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * This header provides constants for binding nvidia,tegra186-hsp. |
| 4 | */ |
| 5 | |
| 6 | #ifndef _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H |
| 7 | #define _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H |
| 8 | |
| 9 | /* |
| 10 | * These define the type of mailbox that is to be used (doorbell, shared |
| 11 | * mailbox, shared semaphore or arbitrated semaphore). |
| 12 | */ |
| 13 | #define TEGRA_HSP_MBOX_TYPE_DB 0x0 |
| 14 | #define TEGRA_HSP_MBOX_TYPE_SM 0x1 |
| 15 | #define TEGRA_HSP_MBOX_TYPE_SS 0x2 |
| 16 | #define TEGRA_HSP_MBOX_TYPE_AS 0x3 |
| 17 | |
| 18 | /* |
| 19 | * These define the types of shared mailbox supported based on data size. |
| 20 | */ |
| 21 | #define TEGRA_HSP_MBOX_TYPE_SM_128BIT (1 << 8) |
| 22 | |
| 23 | /* |
| 24 | * These defines represent the bit associated with the given master ID in the |
| 25 | * doorbell registers. |
| 26 | */ |
| 27 | #define TEGRA_HSP_DB_MASTER_CCPLEX 17 |
| 28 | #define TEGRA_HSP_DB_MASTER_BPMP 19 |
| 29 | |
| 30 | /* |
| 31 | * Shared mailboxes are unidirectional, so the direction needs to be specified |
| 32 | * in the device tree. |
| 33 | */ |
| 34 | #define TEGRA_HSP_SM_MASK 0x00ffffff |
| 35 | #define TEGRA_HSP_SM_FLAG_RX (0 << 31) |
| 36 | #define TEGRA_HSP_SM_FLAG_TX (1 << 31) |
| 37 | |
| 38 | #define TEGRA_HSP_SM_RX(x) (TEGRA_HSP_SM_FLAG_RX | ((x) & TEGRA_HSP_SM_MASK)) |
| 39 | #define TEGRA_HSP_SM_TX(x) (TEGRA_HSP_SM_FLAG_TX | ((x) & TEGRA_HSP_SM_MASK)) |
| 40 | |
| 41 | #endif |