linux-kernel - Re: [PATCH v3] soc: qcom: ice: Add HWKM v1 support for wrapped keys

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Message-ID: <48292ed6-1d63-4fd6-9163-096358f507d5@oss.qualcomm.com>
Date: Mon, 3 Nov 2025 11:43:54 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Neeraj Soni <neeraj.soni@....qualcomm.com>, andersson@...nel.org,
        konradybcio@...nel.org
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] soc: qcom: ice: Add HWKM v1 support for wrapped keys

On 10/30/25 5:10 PM, Neeraj Soni wrote:
> HWKM v1 and v2 differ slightly in wrapped key size and the bit fields for
> certain status registers and operating mode (legacy or standard).
> 
> Add support to select HWKM version based on the major and minor revisions.
> Use this HWKM version to select wrapped key size and to configure the bit
> fields in registers for operating modes and hardware status.
> 
> Support for SCM calls for wrapped keys is being added in the TrustZone for
> few SoCs with HWKM v1. Existing check of qcom_scm_has_wrapped_key_support()
> API ensures that HWKM is used only if these SCM calls are supported in
> TrustZone for that SoC.
> 
> Signed-off-by: Neeraj Soni <neeraj.soni@....qualcomm.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

Konrad