linux-kernel - [PATCH v2] arm64: dts: ti: k3-j721s2-main: Enable crypto accelerator

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Date:   Mon, 31 Oct 2022 19:24:16 +0530
From:   Jayesh Choudhary <j-choudhary@...com>
To:     <nm@...com>, <vigneshr@...com>
CC:     <kristo@...nel.org>, <robh+dt@...nel.org>, <afd@...com>,
        <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <j-choudhary@...com>
Subject: [PATCH v2] arm64: dts: ti: k3-j721s2-main: Enable crypto accelerator

Add the node for SA2UL for supporting hardware crypto algorithms,
including SHA1, SHA256, SHA512, AES, 3DES and AEAD suites.
Add rng node for hardware random number generator.

Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
---

Changes have been tested on local j721s2-evm board. Tcrypt tests
and crypto self-tests were passing.

Changelog v1 -> v2:
- change the TI_SCI flag from shared to exclusive as OP-TEE uses MCU
  domain SA2UL instance and not the main domain instance
- remove the 'dma-coherent' property (Binding changes are merged)
- add the rng node which can be used as well for hwrng along with
  optee-rng
  
v1 patch: https://lore.kernel.org/all/20220628054518.350717-1-j-choudhary@ti.com/

Testing log: https://gist.github.com/Jayesh2000/26acf0e63f7edcd4b267122e4c73b9a8

 arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
index d1ec26110376..7b828afc9280 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
@@ -72,6 +72,26 @@ main_pmx0: pinctrl@...000 {
 		pinctrl-single,function-mask = <0xffffffff>;
 	};
 
+	main_crypto: crypto@...0000 {
+		compatible = "ti,j721e-sa2ul";
+		reg = <0x00 0x4e00000 0x00 0x1200>;
+		power-domains = <&k3_pds 297 TI_SCI_PD_EXCLUSIVE>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges = <0x00 0x04e00000 0x00 0x04e00000 0x00 0x30000>;
+
+		dmas = <&main_udmap 0xca40>, <&main_udmap 0x4a40>,
+				<&main_udmap 0x4a41>;
+		dma-names = "tx", "rx1", "rx2";
+
+		rng: rng@...0000 {
+			compatible = "inside-secure,safexcel-eip76";
+			reg = <0x0 0x4e10000 0x0 0x7d>;
+			interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&k3_clks 297 1>;
+		};
+	};
+
 	main_uart0: serial@...0000 {
 		compatible = "ti,j721e-uart", "ti,am654-uart";
 		reg = <0x00 0x02800000 0x00 0x200>;
-- 
2.25.1