linux-kernel - [PATCH v2 4/4] arm64: dts: ti: k3-j7200-mcu-wakeup: Add SA2UL node

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Message-ID: <20220706190838.26074-4-afd@ti.com>
Date:   Wed, 6 Jul 2022 14:08:38 -0500
From:   Andrew Davis <afd@...com>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Andrew Davis <afd@...com>
Subject: [PATCH v2 4/4] arm64: dts: ti: k3-j7200-mcu-wakeup: Add SA2UL node

J7200 has an instance of SA2UL in the MCU domain.
Add DT node for the same.

The device is marked TI_SCI_PD_SHARED as parts of this IP are also
shared with the security co-processor and OP-TEE.

The RNG node is added but marked disabled as it is firewalled off for
exclusive use by OP-TEE. Any access to this device from Linux will
result in firewall errors. We add the node for completeness of the
hardware description.

Signed-off-by: Andrew Davis <afd@...com>
---

Changes from v1:
 - Added comment in dtsi file
 - Added extra context to commit message

 .../boot/dts/ti/k3-j7200-mcu-wakeup.dtsi      | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
index 1044ec6c4b0d4..a37280200c401 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
@@ -375,4 +375,24 @@ mcu_r5fss0_core1: r5f@...00000 {
 			ti,loczrama = <1>;
 		};
 	};
+
+	mcu_crypto: crypto@...00000 {
+		compatible = "ti,j721e-sa2ul";
+		reg = <0x00 0x40900000 0x00 0x1200>;
+		power-domains = <&k3_pds 265 TI_SCI_PD_SHARED>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges = <0x00 0x40900000 0x00 0x40900000 0x00 0x30000>;
+		dmas = <&mcu_udmap 0xf501>, <&mcu_udmap 0x7502>,
+		       <&mcu_udmap 0x7503>;
+		dma-names = "tx", "rx1", "rx2";
+		dma-coherent;
+
+		rng: rng@...10000 {
+			compatible = "inside-secure,safexcel-eip76";
+			reg = <0x00 0x40910000 0x00 0x7d>;
+			interrupts = <GIC_SPI 945 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled"; /* Used by OP-TEE */
+		};
+	};
 };
-- 
2.36.1