| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * This header provides constants for binding nvidia,tegra186-hsp. |
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| 4 | */ |
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| 5 | |
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| 6 | #ifndef _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H |
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| 7 | #define _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H |
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| 8 | |
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| 9 | /* |
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| 10 | * These define the type of mailbox that is to be used (doorbell, shared |
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| 11 | * mailbox, shared semaphore or arbitrated semaphore). |
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| 12 | */ |
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| 13 | #define TEGRA_HSP_MBOX_TYPE_DB 0x0 |
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| 14 | #define TEGRA_HSP_MBOX_TYPE_SM 0x1 |
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| 15 | #define TEGRA_HSP_MBOX_TYPE_SS 0x2 |
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| 16 | #define TEGRA_HSP_MBOX_TYPE_AS 0x3 |
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| 17 | |
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| 18 | /* |
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| 19 | * These define the types of shared mailbox supported based on data size. |
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| 20 | */ |
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| 21 | #define TEGRA_HSP_MBOX_TYPE_SM_128BIT (1 << 8) |
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| 22 | |
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| 23 | /* |
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| 24 | * These defines represent the bit associated with the given master ID in the |
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| 25 | * doorbell registers. |
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| 26 | */ |
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| 27 | #define TEGRA_HSP_DB_MASTER_CCPLEX 17 |
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| 28 | #define TEGRA_HSP_DB_MASTER_BPMP 19 |
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| 29 | |
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| 30 | /* |
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| 31 | * Shared mailboxes are unidirectional, so the direction needs to be specified |
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| 32 | * in the device tree. |
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| 33 | */ |
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| 34 | #define TEGRA_HSP_SM_MASK 0x00ffffff |
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| 35 | #define TEGRA_HSP_SM_FLAG_RX (0 << 31) |
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| 36 | #define TEGRA_HSP_SM_FLAG_TX (1 << 31) |
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| 37 | |
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| 38 | #define TEGRA_HSP_SM_RX(x) (TEGRA_HSP_SM_FLAG_RX | ((x) & TEGRA_HSP_SM_MASK)) |
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| 39 | #define TEGRA_HSP_SM_TX(x) (TEGRA_HSP_SM_FLAG_TX | ((x) & TEGRA_HSP_SM_MASK)) |
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| 40 | |
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| 41 | #endif |
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| 42 | |
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