On Wed, Dec 23, 2020 at 09:35:14PM +0100, Stefan Wahren wrote:
> This converts the v3d bindings to yaml format.
>
> Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxx>
> ---
> .../devicetree/bindings/gpu/brcm,bcm-v3d.txt | 33 ----------
> .../devicetree/bindings/gpu/brcm,bcm-v3d.yaml | 76 ++++++++++++++++++++++
> 2 files changed, 76 insertions(+), 33 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.txt
> create mode 100644 Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
>
> diff --git a/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.txt b/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.txt
> deleted file mode 100644
> index b2df82b..0000000
> --- a/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.txt
> +++ /dev/null
> @@ -1,33 +0,0 @@
> -Broadcom V3D GPU
> -
> -Only the Broadcom V3D 3.x and newer GPUs are covered by this binding.
> -For V3D 2.x, see brcm,bcm-vc4.txt.
> -
> -Required properties:
> -- compatible: Should be "brcm,7268-v3d" or "brcm,7278-v3d"
> -- reg: Physical base addresses and lengths of the register areas
> -- reg-names: Names for the register areas. The "hub" and "core0"
> - register areas are always required. The "gca" register area
> - is required if the GCA cache controller is present. The
> - "bridge" register area is required if an external reset
> - controller is not present.
> -- interrupts: The interrupt numbers. The first interrupt is for the hub,
> - while the following interrupts are separate interrupt lines
> - for the cores (if they don't share the hub's interrupt).
> - See bindings/interrupt-controller/interrupts.txt
> -
> -Optional properties:
> -- clocks: The core clock the unit runs on
> -- resets: The reset line for v3d, if not using a mapping of the bridge
> - See bindings/reset/reset.txt
> -
> -v3d {
> - compatible = "brcm,7268-v3d";
> - reg = <0xf1204000 0x100>,
> - <0xf1200000 0x4000>,
> - <0xf1208000 0x4000>,
> - <0xf1204100 0x100>;
> - reg-names = "bridge", "hub", "core0", "gca";
> - interrupts = <0 78 4>,
> - <0 77 4>;
> -};
> diff --git a/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml b/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
> new file mode 100644
> index 0000000..a2b06d42
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
> @@ -0,0 +1,76 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/gpu/brcm,bcm-v3d.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Broadcom V3D GPU Bindings
> +
> +maintainers:
> + - Eric Anholt <eric@xxxxxxxxxx>
> + - Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx>
> +
> +properties:
> + $nodename:
> + pattern: '^gpu@[a-f0-9]+$'
> +
> + compatible:
> + enum:
> + - brcm,7268-v3d
> + - brcm,7278-v3d
> +
> + reg:
> + items:
> + - description: hub register
> + - description: core0 register
> + - description: GCA cache controller register (if GCA controller)
> + - description: bridge register (if no external reset controller)
> + minItems: 2
> + maxItems: 4
> +
> + reg-names:
> + items:
> + enum: [ bridge, core0, gca, hub ]
> + minItems: 2
> + maxItems: 4
It's not really clear here what interrupts are expected. I assume that
bridge and core0 are always supposed to be here, but gca and hub are
optional?
It would be a bit cumbersome to get it to check properly, but we can at
least make it obvious in the binding with a comment or the description
> +
> + interrupts:
> + items:
> + - description: hub interrupt
> + - description: core interrupt (if it doesn't share the hub's interrupt)
> + minItems: 1
> + maxItems: 2
> +
> + clocks:
> + maxItems: 1
> +
> + clock-names:
> + maxItems: 1
This property wasn't in the previous binding?
Maxime
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