From: Kartik <kkartik@nvidia.com>
Date: Thu, 14 Apr 2022 13:05:56 +0530
Subject: dt-bindings: tegra186-hsp: add type for shared mailboxes
Git-commit: 58919326e72f63c380dc3271dd1cc8bdf1bbe3e4
Patch-mainline: v5.19-rc1
References: jsc#PED-1763

Tegra234 supports sending/receiving 32-bit and 128-bit data over
a shared mailbox. Based on the data size to be used, clients need
to specify the type of shared mailbox in the device tree.

Add a macro for 128-bit shared mailbox. Mailbox clients can use this
macro as a flag in device tree to enable 128-bit data support for a
shared mailbox.

Signed-off-by: Kartik <kkartik@nvidia.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
[mb: drop yaml file changes]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
 include/dt-bindings/mailbox/tegra186-hsp.h               | 5 +++++
 2 files changed, 14 insertions(+)

diff --git a/include/dt-bindings/mailbox/tegra186-hsp.h b/include/dt-bindings/mailbox/tegra186-hsp.h
index 3bdec7a84d35c..b9ccae2aa9e29 100644
--- a/include/dt-bindings/mailbox/tegra186-hsp.h
+++ b/include/dt-bindings/mailbox/tegra186-hsp.h
@@ -15,6 +15,11 @@
 #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.
-- 
2.37.3