[4/5] hw_random: ixp4xx: Add DT bindings

Message ID 20210511132928.814697-4-linus.walleij@linaro.org
State Accepted
Commit cca061b04c0de4c8a0b2cfcdf534ab0a566178c3
Headers show
Series
  • Untitled series #125731
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Commit Message

Linus Walleij May 11, 2021, 1:29 p.m.
This adds device tree bindings for the simple random number
generator found in the IXP46x SoCs.

Cc: Deepak Saxena <dsaxena@plexity.net>
Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

---
The idea is to apply this through the ARM SoC tree along
with other IXP4xx refactorings.
Please tell me if you prefer another solution.
---
 .../bindings/rng/intel,ixp46x-rng.yaml        | 36 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 37 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rng/intel,ixp46x-rng.yaml

-- 
2.30.2

Comments

Rob Herring May 17, 2021, 10:44 p.m. | #1
On Tue, 11 May 2021 15:29:27 +0200, Linus Walleij wrote:
> This adds device tree bindings for the simple random number

> generator found in the IXP46x SoCs.

> 

> Cc: Deepak Saxena <dsaxena@plexity.net>

> Cc: devicetree@vger.kernel.org

> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

> ---

> The idea is to apply this through the ARM SoC tree along

> with other IXP4xx refactorings.

> Please tell me if you prefer another solution.

> ---

>  .../bindings/rng/intel,ixp46x-rng.yaml        | 36 +++++++++++++++++++

>  MAINTAINERS                                   |  1 +

>  2 files changed, 37 insertions(+)

>  create mode 100644 Documentation/devicetree/bindings/rng/intel,ixp46x-rng.yaml

> 


Reviewed-by: Rob Herring <robh@kernel.org>

Patch

diff --git a/Documentation/devicetree/bindings/rng/intel,ixp46x-rng.yaml b/Documentation/devicetree/bindings/rng/intel,ixp46x-rng.yaml
new file mode 100644
index 000000000000..61963fa9347e
--- /dev/null
+++ b/Documentation/devicetree/bindings/rng/intel,ixp46x-rng.yaml
@@ -0,0 +1,36 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rng/intel,ixp46x-rng.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel IXP46x RNG bindings
+
+description: |
+  The Intel IXP46x has a random number generator at a fixed physical
+  location in memory. Each read is guaranteed to provide a unique
+  32 bit random number.
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+properties:
+  compatible:
+    const: intel,ixp46x-rng
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    rng@70002100 {
+      compatible = "intel,ixp46x-rng";
+      reg = <0x70002100 4>;
+    };
+
diff --git a/MAINTAINERS b/MAINTAINERS
index bd7aff0c120f..cc4bb4e75f04 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9248,6 +9248,7 @@  F:	include/linux/soc/ixp4xx/qmgr.h
 INTEL IXP4XX RANDOM NUMBER GENERATOR SUPPORT
 M:	Deepak Saxena <dsaxena@plexity.net>
 S:	Maintained
+F:	Documentation/devicetree/bindings/display/intel,ixp46x-rng.yaml
 F:	drivers/char/hw_random/ixp4xx-rng.c
 
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