linux-kernel - [RFC PATCH 2/6] dt-bindings: crypto: add binding for eip29t2 public key accelerator (PKA)

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Message-ID: <856cbf3a002b5d400bbbdb7aa914ab5b8681a96e.1659985696.git.danielrparks@ti.com>
Date:   Mon, 8 Aug 2022 14:12:51 -0500
From:   Daniel Parks <danielrparks@...com>
To:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Nishanth Menon <nm@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>
CC:     <linux-crypto@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [RFC PATCH 2/6] dt-bindings: crypto: add binding for eip29t2 public key accelerator (PKA)

The PKA is a mmio-only asymmetric crypto accelerator available on
certain K3 devices.

Signed-off-by: Daniel Parks <danielrparks@...com>
---
 .../inside-secure,safexcel-eip29t2.yaml       | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/crypto/inside-secure,safexcel-eip29t2.yaml

diff --git a/Documentation/devicetree/bindings/crypto/inside-secure,safexcel-eip29t2.yaml b/Documentation/devicetree/bindings/crypto/inside-secure,safexcel-eip29t2.yaml
new file mode 100644
index 000000000000..b1e195a108cc
--- /dev/null
+++ b/Documentation/devicetree/bindings/crypto/inside-secure,safexcel-eip29t2.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/crypto/inside-secure,safexcel-eip29t2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: K3 SoC SA2UL PKA crypto module
+
+maintainers:
+  - Daniel Parks <danielrparks@...com>
+
+description: |
+  Asymmetric crypto accelerator
+
+properties:
+  compatible:
+    const: inside-secure,safexcel-eip29t2
+
+  reg:
+    items:
+      - description: control registers
+      - description: mapped memory
+
+  interrupts:
+    items:
+      - description: PKA interrupt
+
+  clocks:
+    items:
+      - description: PKA in clock
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    pka: pka@...20000 {
+      compatible = "inside-secure,safexcel-eip29t2";
+      reg = <0x00 0x40920000 0x00 0x2000>,
+            <0x00 0x40924000 0x00 0x8000>;
+      interrupts = <GIC_SPI 167 IRQ_TYPE_LEVEL_HIGH>;
+      clocks = <&k3_clks 133 0>;
+    };
-- 
2.17.1