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Wed, 14 Jan 2026 22:36:06 -0600 Received: from [172.24.31.151] (lt5cd2489kgj.dhcp.ti.com [172.24.31.151]) by lelvem-mr06.itg.ti.com (8.18.1/8.18.1) with ESMTP id 60F4a1FV817921; Wed, 14 Jan 2026 22:36:02 -0600 Message-ID: Date: Thu, 15 Jan 2026 10:06:01 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 2/2] arm64: dts: ti: k3-am62p-j722s-common-main: Add HSM M4F node To: Beleswar Padhi , , , , , , CC: , , , , , References: <20260114173551.2545088-1-b-padhi@ti.com> <20260114173551.2545088-3-b-padhi@ti.com> Content-Language: en-US From: "Kumar, Udit" In-Reply-To: <20260114173551.2545088-3-b-padhi@ti.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF000044A1:EE_|SJ0PR10MB6424:EE_ X-MS-Office365-Filtering-Correlation-Id: a59e6e0c-5b4f-4030-3ae5-08de53ef99a4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|34020700016|376014|1800799024|36860700013|82310400026; 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X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Jan 2026 04:36:07.1953 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a59e6e0c-5b4f-4030-3ae5-08de53ef99a4 X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.21.194];Helo=[flwvzet200.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF000044A1.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR10MB6424 Hi Beleswar, On 1/14/2026 11:05 PM, Beleswar Padhi wrote: > The TI K3 AM62P and J722S SoCs have a HSM (High Security Module) M4F > core in the MAIN Voltage Domain which could be used to run secure > services like Authentication. Add Device Tree Node definitions for the > HSM core in the respective SoC common main dtsi file. > > The HSM node is reserved to be loaded and booted by the early-stage > bootloader. The firmware-name property is defined at the SoC level > since the HSM is not a general-purpose remote core and boards are > unlikely to use separate firmware. If needed in exceptional cases, > board-specific device trees can override this property. > > The corresponding reg ranges of HSM node has also been added to its > parent node's (cbass_main bus) ranges property. > > Signed-off-by: Beleswar Padhi > --- > v3: Changelog: > [Nishanth]: > 1. Use generic node name 'remoteproc' > 2. Use label 'hsm' instead of 'hsm_m4fss' > 3. Add a comment for separate SRAMs > 4. Update firmware-name property to match existing naming conventions > 5. Change status to 'reserved' and add a commment > 6. Re-order bootph-pre-ram property before vendor properties > 7. Update commit msg adding rationale for firmware-name in SoC.dtsi > > Link to v2: > https://lore.kernel.org/all/20260106104755.948086-4-b-padhi@ti.com/ > > v2: Changelog: > 1. None > > Link to v1: > https://lore.kernel.org/all/20251231165102.950644-4-b-padhi@ti.com/ > > .../boot/dts/ti/k3-am62p-j722s-common-main.dtsi | 17 +++++++++++++++++ > arch/arm64/boot/dts/ti/k3-am62p.dtsi | 1 + > arch/arm64/boot/dts/ti/k3-j722s-main.dtsi | 5 +++++ > arch/arm64/boot/dts/ti/k3-j722s.dtsi | 1 + > 4 files changed, 24 insertions(+) > > diff --git a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi > index 3cf7c2b3ce2dd..0e1af2a69ca2e 100644 > --- a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi > +++ b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi > @@ -1117,4 +1117,21 @@ vpu: video-codec@30210000 { > clocks = <&k3_clks 204 2>; > power-domains = <&k3_pds 204 TI_SCI_PD_EXCLUSIVE>; > }; > + > + hsm: remoteproc@43c00000 { > + compatible = "ti,hsm-m4fss"; > + /* contiguous regions but instantiated separately in HW */ > + reg = <0x00 0x43c00000 0x00 0x20000>, > + <0x00 0x43c20000 0x00 0x10000>, > + <0x00 0x43c30000 0x00 0x10000>; > + reg-names = "sram0_0", "sram0_1", "sram1"; > + resets = <&k3_reset 225 1>; > + firmware-name = "am62p-hsm-m4f-fw"; you don't need clock and power-domain for this ? > + bootph-pre-ram; > + ti,sci = <&dmsc>; > + ti,sci-dev-id = <225>; > + ti,sci-proc-ids = <0x80 0xff>; > + /* reserved for early-stage bootloader */ > + status = "reserved"; > + }; > }; > diff --git a/arch/arm64/boot/dts/ti/k3-am62p.dtsi b/arch/arm64/boot/dts/ti/k3-am62p.dtsi > index e2c01328eb298..9d6266d6ddb82 100644 > --- a/arch/arm64/boot/dts/ti/k3-am62p.dtsi > +++ b/arch/arm64/boot/dts/ti/k3-am62p.dtsi > @@ -96,6 +96,7 @@ cbass_main: bus@f0000 { > <0x00 0x31100000 0x00 0x31100000 0x00 0x00050000>, /* USB1 DWC3 Core window */ > <0x00 0x40900000 0x00 0x40900000 0x00 0x00030000>, /* SA3UL */ > [..]