linux-kernel - [PATCH v7 2/2] arm64: dts: qcom: sm8550: extend the register range for UFS ICE

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Message-Id: <20241001-wrapped-keys-dts-v7-2-a668519b7ffe@linaro.org>
Date: Tue, 01 Oct 2024 10:35:31 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>, 
 Gaurav Kashyap <quic_gaurkash@...cinc.com>
Subject: [PATCH v7 2/2] arm64: dts: qcom: sm8550: extend the register range
 for UFS ICE

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

The Inline Crypto Engine (ICE) for UFS/EMMC supports the Hardware Key
Manager (HWKM) to securely manage storage keys. Enable using this
hardware on sm8550.

This requires us to increase the register range: HWKM is an additional
piece of hardware sitting alongside ICE, and extends the old ICE's
register space.

NOTE: Although wrapped keys cannot be independently generated and
tested on this platform using generate, prepare and import key calls,
there are non-kernel paths to create wrapped keys, and still use the
kernel to program them into ICE. Hence, enabling wrapped key support
on sm8550 too.

Signed-off-by: Gaurav Kashyap <quic_gaurkash@...cinc.com>
Co-developed-by: Gaurav Kashyap <quic_gaurkash@...cinc.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm8550.dtsi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
index 9dc0ee3eb98f..93c8aa32e411 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -2076,7 +2076,8 @@ opp-300000000 {
 		ice: crypto@...8000 {
 			compatible = "qcom,sm8550-inline-crypto-engine",
 				     "qcom,inline-crypto-engine";
-			reg = <0 0x01d88000 0 0x8000>;
+			reg = <0 0x01d88000 0 0x18000>;
+
 			clocks = <&gcc GCC_UFS_PHY_ICE_CORE_CLK>;
 		};
 

-- 
2.43.0