linux-kernel - [PATCH v2] arm64: dts: ti: k3-am62-main: Enable crypto accelerator

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Date:   Fri, 24 Jun 2022 10:09:05 +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 v2] arm64: dts: ti: k3-am62-main: Enable crypto accelerator

Add the node for sa3ul crypto accelerator.

Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
---
On local testing, crypto self-tests and tcrypt tests were passing
for SHA256, SHA512, ECB-AES and CBC-AES algorithms.
RNG node has not been added due to the indirect access of the
hardware random number generator from OP-TEE.

Changelog v1->v2:
- Change the flag from TI_SCI_PD_EXCLUSIVE to TI_SCI_PD_SHARED
  since sa3ul hardware is also used by OP-TEE and so it should
  be requested using shared TI-SCI flag

 arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
index df3b9883e887..8bb9cb5d4c1a 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
@@ -165,6 +165,19 @@
 		};
 	};
 
+	crypto: crypto@...00000 {
+		compatible = "ti,am62-sa3ul";
+		reg = <0x00 0x40900000 0x00 0x1200>;
+		power-domains = <&k3_pds 70 TI_SCI_PD_SHARED>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges = <0x00 0x40900000 0x00 0x40900000 0x00 0x30000>;
+
+		dmas = <&main_pktdma 0xf501 0>, <&main_pktdma 0x7506 0>,
+				<&main_pktdma 0x7507 0>;
+		dma-names = "tx", "rx1", "rx2";
+	};
+
 	main_pmx0: pinctrl@...00 {
 		compatible = "pinctrl-single";
 		reg = <0x00 0xf4000 0x00 0x2ac>;
-- 
2.17.1