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Date: Sat, 27 Jan 2024 15:14:12 -0800
From: Gaurav Kashyap <quic_gaurkash@...cinc.com>
To: <linux-arm-msm@...r.kernel.org>, <linux-scsi@...r.kernel.org>,
        <andersson@...nel.org>, <ebiggers@...gle.com>,
        <neil.armstrong@...aro.org>, <srinivas.kandagatla@...aro.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <robh+dt@...nel.org>
CC: <linux-kernel@...r.kernel.org>, <linux-mmc@...r.kernel.org>,
        <kernel@...cinc.com>, <linux-crypto@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <quic_omprsing@...cinc.com>,
        <quic_nguyenb@...cinc.com>, <bartosz.golaszewski@...aro.org>,
        <konrad.dybcio@...aro.org>, <ulf.hansson@...aro.org>,
        <jejb@...ux.ibm.com>, <martin.petersen@...cle.com>, <mani@...nel.org>,
        <davem@...emloft.net>, <herbert@...dor.apana.org.au>,
        Gaurav Kashyap <quic_gaurkash@...cinc.com>
Subject: [PATCH v4 14/15] arm64: dts: qcom: sm8650: add hwkm support to ufs ice

The Inline Crypto Engine (ICE) for UFS/EMMC supports the
Hardware Key Manager (HWKM) to securely manage storage
keys. Enable using this hardware on sm8650.

This requires two changes:
1. Register size increase: HWKM is an additional piece of hardware
   sitting alongside ICE, and extends the old ICE's register space.
2. Explicitly tell the ICE driver to use HWKM with ICE so that
   wrapped keys are used in sm8650.

Signed-off-by: Gaurav Kashyap <quic_gaurkash@...cinc.com>
Reviewed-by: Om Prakash Singh <quic_omprsing@...cinc.com>
Tested-by: Neil Armstrong <neil.armstrong@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm8650.dtsi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index 2df77123a8c7..c27daf576af5 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -2524,7 +2524,8 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
 		ice: crypto@...8000 {
 			compatible = "qcom,sm8650-inline-crypto-engine",
 				     "qcom,inline-crypto-engine";
-			reg = <0 0x01d88000 0 0x8000>;
+			reg = <0 0x01d88000 0 0x10000>;
+			qcom,ice-use-hwkm;
 
 			clocks = <&gcc GCC_UFS_PHY_ICE_CORE_CLK>;
 		};
-- 
2.43.0


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