linux-kernel - [PATCH] arm64: dts: qcom: monaco-evk: Enable TPM (ST33)

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Message-Id: <20251114-enable-tpm-monaco-v1-1-4ed566838698@oss.qualcomm.com>
Date: Fri, 14 Nov 2025 15:47:37 +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: monaco-evk: Enable TPM (ST33)

Enable ST33HTPM TPM over SPI10 on the Monaco IoT EVK by adding the
required SPI and TPM nodes.

Signed-off-by: Khalid Faisal Ansari <khalid.ansari@....qualcomm.com>
---
Hi,

As part of TPM support enablement on Monaco EVK, the following tests were performed to verify functionality: 

- TPM detected via tpm_tis_spi driver
- Verified functionality using tpm2-tools:
    * tpm2_getrandom
    * tpm2_rsadecrypt
    * Other basic TPM oeprations
---
 arch/arm64/boot/dts/qcom/monaco-evk.dts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/monaco-evk.dts b/arch/arm64/boot/dts/qcom/monaco-evk.dts
index e72cf6725a52..ca1bf3cc69bd 100644
--- a/arch/arm64/boot/dts/qcom/monaco-evk.dts
+++ b/arch/arm64/boot/dts/qcom/monaco-evk.dts
@@ -432,6 +432,16 @@ &serdes0 {
 	status = "okay";
 };
 
+&spi10 {
+	status = "okay";
+
+	tpm@0 {
+		compatible = "st,st33htpm-spi", "tcg,tpm_tis-spi";
+		reg = <0>;
+		spi-max-frequency = <20000000>;
+	};
+};
+
 &tlmm {
 	ethernet0_default: ethernet0-default-state {
 		ethernet0_mdc: ethernet0-mdc-pins {

---
base-commit: 6fa9041b7177f6771817b95e83f6df17b147c8c6
change-id: 20251114-enable-tpm-monaco-855816b60bc5

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