linux-kernel - [PATCH 2/2] arm64: dts: imx8mm: Add Crypto CAAM support

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Date:   Sat, 30 Nov 2019 16:51:52 -0600
From:   Adam Ford <aford173@...il.com>
To:     linux-crypto@...r.kernel.org
Cc:     Adam Ford <aford173@...il.com>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Horia Geantă <horia.geanta@....com>,
        Aymen Sghaier <aymen.sghaier@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] arm64: dts: imx8mm: Add Crypto CAAM support

The i.MX8M Mini supports the same crypto engine as what is in
the i.MX8MQ, but it is not currently present in the device tree,
because it may be resricted by security features.

This patch places in into the device tree and marks it as disabled,
but anyone not restricting the CAAM with secure mode functions
can mark it as enabled.

Signed-off-by: Adam Ford <aford173@...il.com>

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index 2ed1a3537f05..68c7c1adeb60 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -723,6 +723,37 @@
 				status = "disabled";
 			};
 
+			crypto: crypto@...00000 {
+				compatible = "fsl,sec-v4.0";
+				#address-cells = <1>;
+				#size-cells = <1>;
+				reg = <0x30900000 0x40000>;
+				ranges = <0 0x30900000 0x40000>;
+				interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk IMX8MM_CLK_AHB>,
+					 <&clk IMX8MM_CLK_IPG_ROOT>;
+				clock-names = "aclk", "ipg";
+				status = "disabled";
+
+				sec_jr0: jr@...0 {
+					compatible = "fsl,sec-v4.0-job-ring";
+					reg = <0x1000 0x1000>;
+					interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
+				};
+
+				sec_jr1: jr@...0 {
+					compatible = "fsl,sec-v4.0-job-ring";
+					reg = <0x2000 0x1000>;
+					interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
+				};
+
+				sec_jr2: jr@...0 {
+					compatible = "fsl,sec-v4.0-job-ring";
+					reg = <0x3000 0x1000>;
+					interrupts = <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>;
+				};
+			};
+
 			i2c1: i2c@...20000 {
 				compatible = "fsl,imx8mm-i2c", "fsl,imx21-i2c";
 				#address-cells = <1>;
-- 
2.20.1