linux-kernel - [PATCH] arm64: dts: qcom: hamoa-iot-evk: Enable TPM (ST33) on SPI11

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Message-Id: <20251107-arm64-dts-qcom-hamoa-iot-evk-enable-st33-tpm-on-spi11-v1-1-8ba83b58fca7@oss.qualcomm.com>
Date: Fri, 07 Nov 2025 20:02:25 +0530
From: Khalid Faisal Ansari <khalid.ansari@....qualcomm.com>
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,
        Khalid Faisal Ansari <khalid.ansari@....qualcomm.com>
Subject: [PATCH] arm64: dts: qcom: hamoa-iot-evk: Enable TPM (ST33) on
 SPI11

Enable ST33HTPM TPM over SPI11 on the Hamoa IoT EVK by adding the
required SPI and TPM nodes.

Signed-off-by: Khalid Faisal Ansari <khalid.ansari@....qualcomm.com>
---
Testing:
- TPM detected via tpm_tis_spi
- Verified functionality using tpm2-tools (e.g. tpm2_getrandom, tpm2_rsadecrypt)

Thanks for reviewing.
---
 arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts b/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts
index 36dd6599402b..08465f761e88 100644
--- a/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts
+++ b/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts
@@ -917,6 +917,16 @@ &smb2360_2_eusb2_repeater {
 	vdd3-supply = <&vreg_l8b_3p0>;
 };
 
+&spi11 {
+	status = "okay";
+
+	tpm@0 {
+		compatible = "st,st33htpm-spi";
+		reg = <0>;
+		spi-max-frequency = <20000000>;
+	};
+};
+
 &swr0 {
 	status = "okay";
 

---
base-commit: 9c0826a5d9aa4d52206dd89976858457a2a8a7ed
change-id: 20251107-arm64-dts-qcom-hamoa-iot-evk-enable-st33-tpm-on-spi11-c8353d7fe82e

Best regards,
-- 
Khalid Faisal Ansari <khalid.ansari@....qualcomm.com>