linux-kernel - [PATCH 1/2] dt-bindings: misc: bist: Add BIST dt-binding for TI K3 devices

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Message-ID: <20241128140825.263216-2-n-francis@ti.com>
Date: Thu, 28 Nov 2024 19:38:24 +0530
From: Neha Malcom Francis <n-francis@...com>
To: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>
CC: <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <u-kumar1@...com>, <n-francis@...com>
Subject: [PATCH 1/2] dt-bindings: misc: bist: Add BIST dt-binding for TI K3 devices

Document the binding for TI K3 BIST (Built-In Self Test) block.

Signed-off-by: Neha Malcom Francis <n-francis@...com>
---
 .../bindings/misc/ti,j784s4-bist.yaml         | 66 +++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/ti,j784s4-bist.yaml

diff --git a/Documentation/devicetree/bindings/misc/ti,j784s4-bist.yaml b/Documentation/devicetree/bindings/misc/ti,j784s4-bist.yaml
new file mode 100644
index 000000000000..bd1b42734b3d
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/ti,j784s4-bist.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2024 Texas Instruments Incorporated
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/misc/ti,j784s4-bist.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments K3 BIST
+
+maintainers:
+  - Neha Malcom Francis <n-francis@...com>
+
+description:
+  The BIST (Built-In Self Test) module is an IP block present in K3 devices
+  that support triggering of BIST tests, both PBIST (Memory BIST) and LBIST
+  (Logic BIST) on a core. Both tests are destructive in nature. At boot, BIST
+  is executed by hardware for the MCU domain automatically as part of HW POST.
+
+properties:
+  compatible:
+    const: ti,j784s4-bist
+
+  reg:
+    minItems: 2
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: cfg
+      - const: ctrl_mmr
+
+  clocks:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  ti,bist-instance:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      the BIST instance in the SoC represented as an integer
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - ti,bist-instance
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/soc/ti,sci_pm_domain.h>
+    bus {
+        #address-cells = <2>;
+        #size-cells = <2>;
+        bist@...0000 {
+            compatible = "ti,j784s4-bist";
+            reg = <0x00 0x033c0000 0x00 0x400>,
+            <0x00 0x0010c1a0 0x00 0x01c>;
+            reg-names = "cfg", "ctrl_mmr";
+            clocks = <&k3_clks 237 7>;
+            power-domains = <&k3_pds 237 TI_SCI_PD_EXCLUSIVE>;
+            ti,bist-instance = <14>;
+        };
+    };
-- 
2.34.1