linux-kernel - [PATCH v2 1/2] dt-bindings: stm32: Add bindings for Extended TrustZone Protection

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Message-Id: <20180301135806.19982-2-benjamin.gaignard@st.com>
Date:   Thu,  1 Mar 2018 14:58:05 +0100
From:   Benjamin Gaignard <benjamin.gaignard@...aro.org>
To:     robh+dt@...nel.org, mark.rutland@....com,
        mcoquelin.stm32@...il.com, alexandre.torgue@...com,
        robin.murphy@....com, arnd@...db.de, loic.pallardy@...com
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Benjamin Gaignard <benjamin.gaignard@...com>
Subject: [PATCH v2 1/2] dt-bindings: stm32: Add bindings for Extended TrustZone Protection

Extended TrustZone Protection driver is very basic and only needs
to know where are the registers (no clock, no interrupt)

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...com>
---
 .../bindings/arm/stm32/st,stm32mp1-etzpc.txt       | 25 ++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/stm32/st,stm32mp1-etzpc.txt

diff --git a/Documentation/devicetree/bindings/arm/stm32/st,stm32mp1-etzpc.txt b/Documentation/devicetree/bindings/arm/stm32/st,stm32mp1-etzpc.txt
new file mode 100644
index 000000000000..9407e37f7d15
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/stm32/st,stm32mp1-etzpc.txt
@@ -0,0 +1,25 @@
+STMicroelectronics STM32 Extended TrustZone Protection driver
+
+Required properties:
+ - compatible : value should be "st,stm32mp1-etzpc"
+ - reg : physical base address of the IP registers and length of memory
+	 mapped region.
+ - protected-devices: list of phandle of devices protected by etzpc.
+		      Because etzpc driver rely on the phandle index in
+		      the list, holes must be filled with a disabled node.
+
+Example for stm32mp1:
+
+reserved: disabled_node {
+	status = "disabled";
+};
+
+etzpc: etzpc@...07000 {
+	compatible = "st,stm32mp1-etzpc";
+	reg = <0x5c007000 0x400>;
+		protected-devices = <&usart1>,
+				    <&spi6>,
+				    <&i2c4>,
+				    <&reserved>,
+				    <&rng1>;
+};
-- 
2.15.0