From: Patrice Chotard <patrice.chotard@foss.st.com>
Date: Wed, 11 Feb 2026 13:55:01 +0000 (+0100)
Subject: arm64: dts: st: add bsec support to stm32mp21
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5cccb3f708417701d0e7e763efb2642d9ee47ac6;p=thirdparty%2Fkernel%2Fstable.git

arm64: dts: st: add bsec support to stm32mp21

Add BSEC support to STM32MP21 SoC family with SoC information:
- RPN = Device part number (BSEC_OTP_DATA9)
- PKG = package data register (Bits 2:0 of BSEC_OTP_DATA122)

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20260211-upstream_stm32mp21_bsec_nodes-v1-1-8379bf97b0bc@foss.st.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
---

diff --git a/arch/arm64/boot/dts/st/stm32mp211.dtsi b/arch/arm64/boot/dts/st/stm32mp211.dtsi
index cd078a16065e..4bfd58b26b51 100644
--- a/arch/arm64/boot/dts/st/stm32mp211.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp211.dtsi
@@ -112,6 +112,22 @@
 			};
 		};
 
+		bsec: efuse@44000000 {
+			compatible = "st,stm32mp25-bsec";
+			reg = <0x44000000 0x0 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			part_number_otp@24 {
+				reg = <0x24 0x4>;
+			};
+
+			package_otp@1e8 {
+				reg = <0x1e8 0x1>;
+				bits = <0 3>;
+			};
+		};
+
 		syscfg: syscon@44230000 {
 			compatible = "st,stm32mp21-syscfg", "syscon";
 			reg = <0x44230000 0x0 0x10000>;