linux-kernel - [PATCH v2 0/3] Add TI K3 HSM M4F nodes in device-tree

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Message-ID: <20260106104755.948086-1-b-padhi@ti.com>
Date: Tue, 6 Jan 2026 16:17:52 +0530
From: Beleswar Padhi <b-padhi@...com>
To: <andersson@...nel.org>, <mathieu.poirier@...aro.org>, <robh@...nel.org>,
	<krzk+dt@...nel.org>, <conor+dt@...nel.org>, <nm@...com>, <vigneshr@...com>,
	<kristo@...nel.org>
CC: <afd@...com>, <u-kumar1@...com>, <hnagalla@...com>, <b-padhi@...com>,
	<linux-remoteproc@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v2 0/3] Add TI K3 HSM M4F nodes in device-tree

Some of the TI K3 family of SoCs (like J721S2, J784S4, J722S) have a
HSM (High Security Module) M4F core in the Wakeup Voltage Domain which
could be used to run secure services like Authentication. Add the device
tree bindings and device-tree node definitions for this HSM M4F core.

The HSM M4 core is typically booted early from the bootloader and the
driver for the same is posted in U-Boot mailing list[0].

v2: Changelog:
[Krzysztof Kozlowski]:
 In [PATCH v2 1/3]
 1. Update commit msg to remove redundant "bindings".
 2. Update filename to match compatible.
 3. Remove "address-cells" & "size-cells" property. These belong to the
    device's parent node.
 4. Drop description from firmware-name property.
 5. Fix indentation for DT example.

Link to v1:
https://lore.kernel.org/all/20251231165102.950644-1-b-padhi@ti.com/

[0]: https://lore.kernel.org/all/20251231173621.1069988-1-b-padhi@ti.com/

Beleswar Padhi (3):
  dt-bindings: remoteproc: Add HSM M4F core on TI K3 SoCs
  arm64: dts: ti: k3-{j784s4-j742s2/j721s2}-mcu-wakeup: Add HSM M4F node
  arm64: dts: ti: k3-am62p-j722s-common-main: Add HSM M4F node

 .../bindings/remoteproc/ti,hsm-m4fss.yaml     | 72 +++++++++++++++++++
 .../dts/ti/k3-am62p-j722s-common-main.dtsi    | 15 ++++
 arch/arm64/boot/dts/ti/k3-am62p.dtsi          |  1 +
 .../boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi     | 15 ++++
 arch/arm64/boot/dts/ti/k3-j722s.dtsi          |  1 +
 .../k3-j784s4-j742s2-mcu-wakeup-common.dtsi   | 15 ++++
 6 files changed, 119 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/ti,hsm-m4fss.yaml

-- 
2.34.1