diff options
Diffstat (limited to 'include/dt-bindings/mailbox/tegra186-hsp.h')
| -rw-r--r-- | include/dt-bindings/mailbox/tegra186-hsp.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/dt-bindings/mailbox/tegra186-hsp.h b/include/dt-bindings/mailbox/tegra186-hsp.h index f5d66e5f5f10..b9ccae2aa9e2 100644 --- a/include/dt-bindings/mailbox/tegra186-hsp.h +++ b/include/dt-bindings/mailbox/tegra186-hsp.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * This header provides constants for binding nvidia,tegra186-hsp. */ @@ -15,10 +16,26 @@ #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 |