mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
synced 2025-01-06 05:02:31 +00:00
dt-bindings: net: bluetooth: Add MediaTek MT7921S SDIO Bluetooth
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 <sean.wang@mediatek.com> Signed-off-by: Chen-Yu Tsai <wenst@chromium.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
parent
ce60b9231b
commit
defa9cca02
@ -0,0 +1,55 @@
|
||||
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
|
||||
%YAML 1.2
|
||||
---
|
||||
$id: http://devicetree.org/schemas/net/bluetooth/mediatek,mt7921s-bluetooth.yaml#
|
||||
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||||
|
||||
title: MediaTek MT7921S Bluetooth
|
||||
|
||||
maintainers:
|
||||
- Sean Wang <sean.wang@mediatek.com>
|
||||
|
||||
description:
|
||||
MT7921S is an SDIO-attached dual-radio WiFi+Bluetooth Combo chip; each
|
||||
function is its own SDIO function on a shared SDIO interface. The chip
|
||||
has two dedicated reset lines, one for each function core.
|
||||
This binding only covers the Bluetooth SDIO function, with one device
|
||||
node describing only this SDIO function.
|
||||
|
||||
allOf:
|
||||
- $ref: bluetooth-controller.yaml#
|
||||
|
||||
properties:
|
||||
compatible:
|
||||
enum:
|
||||
- mediatek,mt7921s-bluetooth
|
||||
|
||||
reg:
|
||||
const: 2
|
||||
|
||||
reset-gpios:
|
||||
maxItems: 1
|
||||
description:
|
||||
An active-low reset line for the Bluetooth core; on typical M.2
|
||||
key E modules this is the W_DISABLE2# pin.
|
||||
|
||||
required:
|
||||
- compatible
|
||||
- reg
|
||||
|
||||
unevaluatedProperties: false
|
||||
|
||||
examples:
|
||||
- |
|
||||
#include <dt-bindings/gpio/gpio.h>
|
||||
|
||||
mmc {
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
bluetooth@2 {
|
||||
compatible = "mediatek,mt7921s-bluetooth";
|
||||
reg = <2>;
|
||||
reset-gpios = <&pio 8 GPIO_ACTIVE_LOW>;
|
||||
};
|
||||
};
|
@ -13763,6 +13763,7 @@ M: Sean Wang <sean.wang@mediatek.com>
|
||||
L: linux-bluetooth@vger.kernel.org
|
||||
L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
|
||||
S: Maintained
|
||||
F: Documentation/devicetree/bindings/net/bluetooth/mediatek,mt7921s-bluetooth.yaml
|
||||
F: Documentation/devicetree/bindings/net/mediatek-bluetooth.txt
|
||||
F: drivers/bluetooth/btmtkuart.c
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user