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[v4,2/4] dt-bindings: arm: rockchip: Add FriendlyARM NanoPi M4B

Message ID 20210121162321.4538-3-wens@kernel.org (mailing list archive)
State New
Headers show
Series arm64: rockchip: Fix PCIe ep-gpios requirement and Add Nanopi M4B | expand

Commit Message

Chen-Yu Tsai Jan. 21, 2021, 4:23 p.m. UTC
From: Chen-Yu Tsai <wens@csie.org>

The NanoPi M4B is a minor revision of the original M4.

The differences against the original Nanopi M4 that are common with the
other M4V2 revision include:

  - microphone header removed
  - power button added
  - recovery button added

Additional changes specific to the M4B:

  - USB 3.0 hub removed; board now has 2x USB 3.0 type-A ports and 2x
    USB 2.0 ports
  - ADB toggle switch added; this changes the top USB 3.0 host port to
    a peripheral port
  - Type-C port no longer supports data or PD
  - WiFi/Bluetooth combo chip switched to AP6256, which supports BT 5.0
    but only 1T1R (down from 2T2R) for WiFi

Add a compatible string for the new board revision.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
 Documentation/devicetree/bindings/arm/rockchip.yaml | 1 +
 1 file changed, 1 insertion(+)
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diff --git a/Documentation/devicetree/bindings/arm/rockchip.yaml b/Documentation/devicetree/bindings/arm/rockchip.yaml
index 8a2dd9f1cff2..c3036f95c7bc 100644
--- a/Documentation/devicetree/bindings/arm/rockchip.yaml
+++ b/Documentation/devicetree/bindings/arm/rockchip.yaml
@@ -132,6 +132,7 @@  properties:
           - enum:
               - friendlyarm,nanopc-t4
               - friendlyarm,nanopi-m4
+              - friendlyarm,nanopi-m4b
               - friendlyarm,nanopi-neo4
           - const: rockchip,rk3399