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Message-ID: <20210922085203.2547-1-j-choudhary@ti.com>
Date: Wed, 22 Sep 2021 14:22:03 +0530
From: Jayesh Choudhary <j-choudhary@...com>
To: <devicetree@...r.kernel.org>
CC: <mpm@...enic.com>, <herbert@...dor.apana.org.au>,
<robh+dt@...nel.org>, <j-choudhary@...com>,
<linux-crypto@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] dt-bindings: rng: convert OMAP and Inside-Secure HWRNG to yaml schema
Converts the RNG bindings for OMAP SoCs and Inside-Secure
HWRNG modules to YAML schema.
Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
---
Changelog:
v2:
- modified the license-identifier
- modified 'clock-names' property
.../devicetree/bindings/rng/omap_rng.txt | 38 --------
.../devicetree/bindings/rng/omap_rng.yaml | 93 +++++++++++++++++++
2 files changed, 93 insertions(+), 38 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/rng/omap_rng.txt
create mode 100644 Documentation/devicetree/bindings/rng/omap_rng.yaml
diff --git a/Documentation/devicetree/bindings/rng/omap_rng.txt b/Documentation/devicetree/bindings/rng/omap_rng.txt
deleted file mode 100644
index ea434ce50f36..000000000000
--- a/Documentation/devicetree/bindings/rng/omap_rng.txt
+++ /dev/null
@@ -1,38 +0,0 @@
-OMAP SoC and Inside-Secure HWRNG Module
-
-Required properties:
-
-- compatible : Should contain entries for this and backward compatible
- RNG versions:
- - "ti,omap2-rng" for OMAP2.
- - "ti,omap4-rng" for OMAP4, OMAP5 and AM33XX.
- - "inside-secure,safexcel-eip76" for SoCs with EIP76 IP block
- Note that these two versions are incompatible.
-- ti,hwmods: Name of the hwmod associated with the RNG module
-- reg : Offset and length of the register set for the module
-- interrupts : the interrupt number for the RNG module.
- Used for "ti,omap4-rng" and "inside-secure,safexcel-eip76"
-- clocks: the trng clock source. Only mandatory for the
- "inside-secure,safexcel-eip76" compatible, the second clock is
- needed for the Armada 7K/8K SoCs
-- clock-names: mandatory if there is a second clock, in this case the
- name must be "core" for the first clock and "reg" for the second
- one
-
-
-Example:
-/* AM335x */
-rng: rng@...10000 {
- compatible = "ti,omap4-rng";
- ti,hwmods = "rng";
- reg = <0x48310000 0x2000>;
- interrupts = <111>;
-};
-
-/* SafeXcel IP-76 */
-trng: rng@...60000 {
- compatible = "inside-secure,safexcel-eip76";
- reg = <0xf2760000 0x7d>;
- interrupts = <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&cpm_syscon0 1 25>;
-};
diff --git a/Documentation/devicetree/bindings/rng/omap_rng.yaml b/Documentation/devicetree/bindings/rng/omap_rng.yaml
new file mode 100644
index 000000000000..6198311d9f72
--- /dev/null
+++ b/Documentation/devicetree/bindings/rng/omap_rng.yaml
@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rng/omap_rng.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: OMAP SoC and Inside-Secure HWRNG Module
+
+maintainers:
+ - Jayesh Choudhary <j-choudhary@...com>
+
+properties:
+ compatible:
+ enum:
+ - ti,omap2-rng
+ - ti,omap4-rng
+ - inside-secure,safexcel-eip76
+
+ ti,hwmods:
+ const: rng
+ deprecated: true
+ description: Name of the hwmod associated with the RNG module
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 2
+ items:
+ - description: EIP150 gatable clock
+ - description: Main gatable clock
+
+ clock-names:
+ minItems: 1
+ items:
+ - const: core
+ - const: reg
+
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - ti,omap4-rng
+ - inside-secure,safexcel-eip76
+
+ then:
+ required:
+ - interrupts
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - inside-secure,safexcel-eip76
+
+ then:
+ required:
+ - clocks
+
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ /* AM335x */
+ rng: rng@...10000 {
+ compatible = "ti,omap4-rng";
+ ti,hwmods = "rng";
+ reg = <0x48310000 0x2000>;
+ interrupts = <111>;
+ };
+ - |
+ /* SafeXcel IP-76 */
+ trng: rng@...60000 {
+ compatible = "inside-secure,safexcel-eip76";
+ reg = <0xf2760000 0x7d>;
+ interrupts = <0 59 4>;
+ clocks = <&cpm_syscon0 1 25>;
+ };
+
+...
--
2.17.1
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