On Fri, 12 Apr 2024 15:30:42 +0800, Chen-Yu Tsai wrote:
> The MediaTek MT7921S is a WiFi/Bluetooth combo chip that works over
> SDIO. WiFi and Bluetooth are separate SDIO functions within the chip.
> While the Bluetooth SDIO function is fully discoverable, the chip has
> a pin that can reset just the Bluetooth core, as opposed to the full
> chip. This should be described in the device tree.
>
> Add a device tree binding for the Bluetooth SDIO function of the MT7921S
> specifically to document the reset line. This binding is based on the MMC
> controller binding, which specifies one device node per SDIO function.
>
> Cc: Sean Wang <[email protected]>
> Signed-off-by: Chen-Yu Tsai <[email protected]>
> ---
> Changes since v2:
> - Expand description and commit message to clearly state that WiFi and
> Bluetooth are separate SDIO functions, and that each function should
> be a separate device node, as specified by the MMC binding.
> - Change 'additionalProperties' to 'unevaluatedProperties'
> - Add missing separating new line
> - s/ot/to/
>
> Angelo's reviewed-by was not picked up due to the above changes.
>
> Changes since v1:
> - Reworded descriptions
> - Moved binding maintainer section before description
> - Added missing reference to bluetooth-controller.yaml
> - Added missing GPIO header to example
> ---
> .../bluetooth/mediatek,mt7921s-bluetooth.yaml | 55 +++++++++++++++++++
> MAINTAINERS | 1 +
> 2 files changed, 56 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/net/bluetooth/mediatek,mt7921s-bluetooth.yaml
>
Reviewed-by: Rob Herring <[email protected]>