[Letux-kernel] [PATCH v5 2/6] Bindings: nvmem: add bindings for JZ4780 efuse

Andreas Kemnade andreas at kemnade.info
Sat Feb 22 16:57:38 CET 2020


On Sat, 22 Feb 2020 11:25:37 +0100
"H. Nikolaus Schaller" <hns at goldelico.com> wrote:

> From: PrasannaKumar Muralidharan <prasannatsmkumar at gmail.com>
> 
> This patch brings support for the JZ4780 efuse. Currently it only exposes
> a read only access to the entire 8K bits efuse memory.
> 
> Tested-by: Mathieu Malaterre <malat at debian.org>
> Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar at gmail.com>
> Signed-off-by: Mathieu Malaterre <malat at debian.org>
> Signed-off-by: H. Nikolaus Schaller <hns at goldelico.com>
> [converted to yaml]
> Signed-off-by: Andreas Kemnade <andreas at kemnade.info>
> ---
>  .../bindings/nvmem/ingenic,jz4780-efuse.yaml  | 50 +++++++++++++++++++
>  1 file changed, 50 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/nvmem/ingenic,jz4780-efuse.yaml
> 
> diff --git a/Documentation/devicetree/bindings/nvmem/ingenic,jz4780-efuse.yaml b/Documentation/devicetree/bindings/nvmem/ingenic,jz4780-efuse.yaml
> new file mode 100644
> index 000000000000..09a8ef937750
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/nvmem/ingenic,jz4780-efuse.yaml
> @@ -0,0 +1,50 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/nvmem/ingenic,jz4780-efuse.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Ingenic JZ EFUSE driver bindings
> +
> +maintainers:
> +  - PrasannaKumar Muralidharan <prasannatsmkumar at gmail.com>
> +
> +allOf:
> +  - $ref: "nvmem.yaml#"
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ingenic,jz4780-efuse
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    # Handle for the ahb for the efuse.
> +    maxItems: 1
> +
> +  clock-names:
> +   items:
> +     - const:  ahb2
as Rob said: probably not needed, since it is a single
clock, and the driver uses devm_clk_get(dev, NULL), so it should be prepared
for that without any extra work.

> +
> +required:
> +  - compatible
> +  - reg
> +  - clock-names
so it is not required here (but "- clocks" (not "- clock") as said in earlier
mail).

> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/jz4780-cgu.h>
> +
> +    efuse at 134100d0 {
> +        compatible = "ingenic,jz4780-efuse";
> +        reg = <0x134100d0 0x2c>;
> +
> +        clocks = <&cgu JZ4780_CLK_AHB2>;
> +        clock-names = "ahb2";
and not required here.

Regards,
Andreas
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