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

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Date:   Tue, 28 Jun 2022 11:15:18 +0530
From:   Jayesh Choudhary <j-choudhary@...com>
To:     <devicetree@...r.kernel.org>
CC:     <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <j-choudhary@...com>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] 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.

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

There is a dependency of this patch on a dmaengine patch:
<https://lore.kernel.org/all/20220628050232.331956-1-j-choudhary@ti.com/>
This patch adds the PSIL threads for main domain SA2UL.

Without the above patch, dma-controller fails to get the channel
and tcrypt module does software crypto. But it does not break boot
since its runtime and not compile-time.

Testing log: <https://gist.github.com/Jayesh2000/e429c78a545809602e6473886a2a6ae4>

 arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
index 34e7d577ae13..79ca34a7e34f 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
@@ -72,6 +72,20 @@
 		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_SHARED>;
+		#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";
+		dma-coherent;
+	};
+
 	main_uart0: serial@...0000 {
 		compatible = "ti,j721e-uart", "ti,am654-uart";
 		reg = <0x00 0x02800000 0x00 0x200>;
-- 
2.17.1