[PATCH net-next v9 1/4] dt-bindings: net: Add support for Spacemit K3 dwmac
From: Inochi Amaoto <inochiama@gmail.com>
Date: 2026-03-12 01:23:22
Also in:
linux-arm-kernel, linux-devicetree, linux-riscv, lkml, spacemit
Subsystem:
networking drivers, open firmware and flattened device tree bindings, spacemit dwmac glue layer, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Inochi Amaoto, Linus Torvalds
The GMAC IP on Spacemit K3 is almost a standard Synopsys DesignWare MAC (version 5.40a) with some extra clock. Add necessary compatible string for this device. Signed-off-by: Inochi Amaoto <inochiama@gmail.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> --- .../devicetree/bindings/net/snps,dwmac.yaml | 2 + .../bindings/net/spacemit,k3-dwmac.yaml | 102 ++++++++++++++++++ 2 files changed, 104 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/spacemit,k3-dwmac.yaml
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 38bc34dc4f09..98ebb6276bc6 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml@@ -109,6 +109,7 @@ properties: - snps,dwmac-5.10a - snps,dwmac-5.20 - snps,dwmac-5.30a + - snps,dwmac-5.40a - snps,dwxgmac - snps,dwxgmac-2.10 - sophgo,sg2042-dwmac
@@ -656,6 +657,7 @@ allOf: - snps,dwmac-5.10a - snps,dwmac-5.20 - snps,dwmac-5.30a + - snps,dwmac-5.40a - snps,dwxgmac - snps,dwxgmac-2.10 - st,spear600-gmac
diff --git a/Documentation/devicetree/bindings/net/spacemit,k3-dwmac.yaml b/Documentation/devicetree/bindings/net/spacemit,k3-dwmac.yaml
new file mode 100644
index 000000000000..678eccf044f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/spacemit,k3-dwmac.yaml@@ -0,0 +1,102 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/spacemit,k3-dwmac.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Spacemit K3 DWMAC glue layer + +maintainers: + - Inochi Amaoto <inochiama@gmail.com> + +select: + properties: + compatible: + contains: + const: spacemit,k3-dwmac + required: + - compatible + +properties: + compatible: + items: + - const: spacemit,k3-dwmac + - const: snps,dwmac-5.40a + + reg: + maxItems: 1 + + clocks: + items: + - description: GMAC application clock + - description: PTP clock + - description: TX clock + + clock-names: + items: + - const: stmmaceth + - const: ptp_ref + - const: tx + + interrupts: + minItems: 1 + items: + - description: MAC interrupt + - description: MAC wake interrupt + + interrupt-names: + minItems: 1 + items: + - const: macirq + - const: eth_wake_irq + + resets: + maxItems: 1 + + reset-names: + const: stmmaceth + + spacemit,apmu: + $ref: /schemas/types.yaml#/definitions/phandle-array + items: + - items: + - description: phandle to the syscon node which control the glue register + - description: offset of the control register + - description: offset of the dline register + description: + A phandle to syscon with offset to control registers for this MAC + +required: + - compatible + - reg + - clocks + - clock-names + - interrupts + - interrupt-names + - resets + - reset-names + - spacemit,apmu + +allOf: + - $ref: snps,dwmac.yaml# + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + + ethernet@cac80000 { + compatible = "spacemit,k3-dwmac", "snps,dwmac-5.40a"; + reg = <0xcac80000 0x2000>; + clocks = <&syscon_apmu 66>, <&syscon_apmu 68>, + <&syscon_apmu 69>; + clock-names = "stmmaceth", "ptp_ref", "tx"; + interrupts = <131 IRQ_TYPE_LEVEL_HIGH>, <276 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "macirq", "eth_wake_irq"; + phy-mode = "rgmii-id"; + phy-handle = <&phy0>; + resets = <&syscon_apmu 67>; + reset-names = "stmmaceth"; + spacemit,apmu = <&syscon_apmu 0x384 0x38c>; + };
--
2.53.0