linux-kernel - [PATCH v1 0/2] mailbox: Add MediaTek TinySYS Mailbox

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Message-ID: <20250623120127.109237-1-angelogioacchino.delregno@collabora.com>
Date: Mon, 23 Jun 2025 14:01:25 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: jassisinghbrar@...il.com
Cc: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	kernel@...labora.com
Subject: [PATCH v1 0/2] mailbox: Add MediaTek TinySYS Mailbox

This series adds support for the MediaTek TinySYS Mailbox, used for
message passing on ARM SCMI and for both the standard 0x10 SCMI and
the MediaTek TinySYS SCMI protocol.

This mailbox is similar to the standard MHU Mailbox, but with some
critical differences that are MediaTek-specific; for more information,
check the description for the commits in this series.

This mailbox is found in the new MT8196 Chromebook SoC and in the
MT6991 Dimensity 9400 SoC, other than slightly older chips like
MT6898 Dimensity 9300, the MT6985 Dimensity 9200 and similar.

Support for all of the mentioned SoCs is present in this series.

AngeloGioacchino Del Regno (2):
  dt-bindings: mailbox: Add MediaTek TinySYS MHU mailbox
  mailbox: Add MediaTek TinySYS MHU-like Mailbox

 .../mediatek,mt6985-tinysys-mhu-mbox.yaml     |  52 +++++
 drivers/mailbox/Kconfig                       |   9 +
 drivers/mailbox/Makefile                      |   2 +
 drivers/mailbox/mtk-tinysys-mailbox.c         | 196 ++++++++++++++++++
 4 files changed, 259 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mailbox/mediatek,mt6985-tinysys-mhu-mbox.yaml
 create mode 100644 drivers/mailbox/mtk-tinysys-mailbox.c

-- 
2.49.0