Re: [PATCH 25/26] dt-bindings: reserved-memory: Add Google Kinfo Pixel reserved memory

Rob Herring
2025-11-19T22:41:06Z

On Wed, Nov 19, 2025 at 05:44:26PM +0200, Eugen Hristev wrote:
> Add documentation for Google Kinfo Pixel reserved memory area.
>
> Signed-off-by: Eugen Hristev <eugen.hristev@linaro.org>
> ---
> .../reserved-memory/google,kinfo.yaml | 49 +++++++++++++++++++
> MAINTAINERS | 5 ++
> 2 files changed, 54 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/reserved-memory/google,kinfo.yaml
>
> diff --git a/Documentation/devicetree/bindings/reserved-memory/google,kinfo.yaml b/Documentation/devicetree/bindings/reserved-memory/google,kinfo.yaml
> new file mode 100644
> index 000000000000..12d0b2815c02
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/reserved-memory/google,kinfo.yaml
> @@ -0,0 +1,49 @@
> +# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/reserved-memory/google,kinfo.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Google Pixel Kinfo reserved memory
> +
> +maintainers:
> + - Eugen Hristev <eugen.hristev@linaro.org>
> +
> +description:
> + This binding describes the Google Pixel Kinfo reserved memory, a region
> + of reserved-memory used to store data for firmware/bootloader on the Pixel
> + platform. The data stored is debugging information on the running kernel.
> +
> +properties:
> + compatible:
> + items:
> + - const: google,kinfo
> +
> + memory-region:
> + maxItems: 1
> + description: Reference to the reserved-memory for the data
> +
> +required:
> + - compatible
> + - memory-region
> +
> +additionalProperties: true
> +
> +examples:
> + - |
> + reserved-memory {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + kinfo_region: smem@fa00000 {

Just put the google,kinfo (or google,debug-kinfo??) compatible here and
that's it.

> + reg = <0xfa00000 0x1000>;
> + no-map;

You don't need to access the memory?

> + };
> + };
> +
> + debug-kinfo {
> + compatible = "google,debug-kinfo";
> +
> + memory-region = <&kinfo_region>;
> + };