Re: [PATCH v3 2/2] dt-bindings: mtd: Document use of nvmem-cells compatible

Rob Herring
2021-03-10T02:59:41Z

On Mon, Mar 08, 2021 at 02:18:45AM +0100, Ansuel Smith wrote:
> Document nvmem-cells compatible used to treat mtd partitions as a
> nvmem provider.
>
> Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
> ---
> .../bindings/mtd/partitions/nvmem-cells.yaml | 105 ++++++++++++++++++
> 1 file changed, 105 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml
>
> diff --git a/Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml b/Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml
> new file mode 100644
> index 000000000000..4ed246b27985
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml
> @@ -0,0 +1,105 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mtd/partitions/nvmem-cells.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Nvmem cells
> +
> +description: |
> + This binding can be used to treat the specific partition as a nvmem provider.
> + Each direct subnodes represents the nvmem cells and won't be parsed as fixed-partitions.
> + Fixed-partitions bindings described in fixed-partitions.yaml apply to the nvmem provider node.
> +
> +maintainers:
> + - Ansuel Smith <ansuelsmth@gmail.com>
> +

I think this should reference nvmem.yaml. We can drop the $nodename
restrictions in it.

> +properties:
> + compatible:
> + const: nvmem-cells
> +
> + "#address-cells": true
> +
> + "#size-cells": true
> +
> + reg:
> + description: partition offset and size within the flash
> + maxItems: 1
> +
> +required:
> + - compatible
> + - "#address-cells"
> + - "#size-cells"
> + - reg
> +
> +additionalProperties: true
> +
> +examples:
> + - |
> + partitions {
> + compatible = "fixed-partitions";
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + /* ... */
> +
> + };
> + art: art@1200000 {
> + compatible = "nvmem-cells";
> + reg = <0x1200000 0x0140000>;
> + label = "art";
> + read-only;
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + macaddr_gmac1: macaddr_gmac1@0 {
> + reg = <0x0 0x6>;
> + };
> +
> + macaddr_gmac2: macaddr_gmac2@6 {
> + reg = <0x6 0x6>;
> + };
> +
> + pre_cal_24g: pre_cal_24g@1000 {
> + reg = <0x1000 0x2f20>;
> + };
> +
> + pre_cal_5g: pre_cal_5g@5000{
> + reg = <0x5000 0x2f20>;
> + };
> + };
> + - |
> + partitions {
> + compatible = "fixed-partitions";
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + partition@0 {
> + label = "bootloader";
> + reg = <0x000000 0x100000>;
> + read-only;
> + };
> +
> + firmware@100000 {
> + compatible = "brcm,trx";
> + label = "firmware";
> + reg = <0x100000 0xe00000>;
> + };
> +
> + calibration@f00000 {
> + compatible = "nvmem-cells";
> + label = "calibration";
> + reg = <0xf00000 0x100000>;
> + ranges = <0 0xf00000 0x100000>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + wifi0@0 {
> + reg = <0x000000 0x080000>;
> + };
> +
> + wifi1@80000 {
> + reg = <0x080000 0x080000>;
> + };
> + };
> + };
> --
> 2.30.0
>