linux-kernel - [PATCH 4/6] ARM: dts: stm32: Manage security diversity for STM32M15x SOCs

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Date:   Wed, 20 Nov 2019 15:41:07 +0100
From:   Alexandre Torgue <alexandre.torgue@...com>
To:     Maxime Coquelin <mcoquelin.stm32@...il.com>, <arnd@...db.de>,
        <robh+dt@...nel.org>, <mark.rutland@....com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>,
        Alexandre Torgue <alexandre.torgue@...com>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-kernel@...r.kernel.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH 4/6] ARM: dts: stm32: Manage security diversity for STM32M15x SOCs

This commit creates a new file to manage security diversity on STM32MP15x
SOCs. On STM32MP15xY, "Y" gives information:
 -Y = A means no cryp IP and no secure boot.
 -Y = C means cryp IP + secure boot.

Signed-off-by: Alexandre Torgue <alexandre.torgue@...com>

diff --git a/arch/arm/boot/dts/stm32mp151.dtsi b/arch/arm/boot/dts/stm32mp151.dtsi
index 9a0b55be134d..072fc7025987 100644
--- a/arch/arm/boot/dts/stm32mp151.dtsi
+++ b/arch/arm/boot/dts/stm32mp151.dtsi
@@ -1255,15 +1255,6 @@
 			status = "disabled";
 		};
 
-		cryp1: cryp@...01000 {
-			compatible = "st,stm32mp1-cryp";
-			reg = <0x54001000 0x400>;
-			interrupts = <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&rcc CRYP1>;
-			resets = <&rcc CRYP1_R>;
-			status = "disabled";
-		};
-
 		hash1: hash@...02000 {
 			compatible = "st,stm32f756-hash";
 			reg = <0x54002000 0x400>;
diff --git a/arch/arm/boot/dts/stm32mp15xc.dtsi b/arch/arm/boot/dts/stm32mp15xc.dtsi
new file mode 100644
index 000000000000..b06a55a2fa18
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp15xc.dtsi
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2019 - All Rights Reserved
+ * Author: Alexandre Torgue <alexandre.torgue@...com> for STMicroelectronics.
+ */
+
+/ {
+	soc {
+		cryp1: cryp@...01000 {
+			compatible = "st,stm32mp1-cryp";
+			reg = <0x54001000 0x400>;
+			interrupts = <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc CRYP1>;
+			resets = <&rcc CRYP1_R>;
+			status = "disabled";
+		};
+	};
+};
-- 
2.17.1