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/* SPDX-License-Identifier: GPL-2.0 */ /* * This header provides constants for binding nvidia,tegra186-hsp. */ #ifndef _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H #define _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H /* * These define the type of mailbox that is to be used (doorbell, shared * mailbox, shared semaphore or arbitrated semaphore). */ #define TEGRA_HSP_MBOX_TYPE_DB 0x0 #define TEGRA_HSP_MBOX_TYPE_SM 0x1 #define TEGRA_HSP_MBOX_TYPE_SS 0x2 #define TEGRA_HSP_MBOX_TYPE_AS 0x3 /* * These define the types of shared mailbox supported based on data size. */ #define TEGRA_HSP_MBOX_TYPE_SM_128BIT (1 << 8) /* * These defines represent the bit associated with the given master ID in the * doorbell registers. */ #define TEGRA_HSP_DB_MASTER_CCPLEX 17 #define TEGRA_HSP_DB_MASTER_BPMP 19 /* * Shared mailboxes are unidirectional, so the direction needs to be specified * in the device tree. */ #define TEGRA_HSP_SM_MASK 0x00ffffff #define TEGRA_HSP_SM_FLAG_RX (0 << 31) #define TEGRA_HSP_SM_FLAG_TX (1 << 31) #define TEGRA_HSP_SM_RX(x) (TEGRA_HSP_SM_FLAG_RX | ((x) & TEGRA_HSP_SM_MASK)) #define TEGRA_HSP_SM_TX(x) (TEGRA_HSP_SM_FLAG_TX | ((x) & TEGRA_HSP_SM_MASK)) #endif