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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_H7#define _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H8 9/*10 * These define the type of mailbox that is to be used (doorbell, shared11 * mailbox, shared semaphore or arbitrated semaphore).12 */13#define TEGRA_HSP_MBOX_TYPE_DB 0x014#define TEGRA_HSP_MBOX_TYPE_SM 0x115#define TEGRA_HSP_MBOX_TYPE_SS 0x216#define TEGRA_HSP_MBOX_TYPE_AS 0x317 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 the25 * doorbell registers.26 */27#define TEGRA_HSP_DB_MASTER_CCPLEX 1728#define TEGRA_HSP_DB_MASTER_BPMP 1929 30/*31 * Shared mailboxes are unidirectional, so the direction needs to be specified32 * in the device tree.33 */34#define TEGRA_HSP_SM_MASK 0x00ffffff35#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#endif42