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Message-ID: <20260120043609.910302-2-inochiama@gmail.com>
Date: Tue, 20 Jan 2026 12:36:06 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: Andrew Lunn <andrew+netdev@...n.ch>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Yixun Lan <dlan@...too.org>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Richard Cochran <richardcochran@...il.com>,
Paul Walmsley <pjw@...nel.org>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Alexandre Ghiti <alex@...ti.fr>,
"Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
Yanteng Si <siyanteng@...oftware.com.cn>,
Yao Zi <ziyao@...root.org>,
Vladimir Oltean <vladimir.oltean@....com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
Inochi Amaoto <inochiama@...il.com>,
Choong Yong Liang <yong.liang.choong@...ux.intel.com>,
Maxime Chevallier <maxime.chevallier@...tlin.com>,
Chen-Yu Tsai <wens@...nel.org>,
Shangjuan Wei <weishangjuan@...incomputing.com>,
Boon Khai Ng <boon.khai.ng@...era.com>,
Quentin Schulz <quentin.schulz@...rry.de>,
Giuseppe Cavallaro <peppe.cavallaro@...com>,
Jose Abreu <joabreu@...opsys.com>
Cc: netdev@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-riscv@...ts.infradead.org,
spacemit@...ts.linux.dev,
linux-stm32@...md-mailman.stormreply.com,
linux-arm-kernel@...ts.infradead.org,
Longbin Li <looong.bin@...il.com>
Subject: [PATCH net-next 1/3] dt-bindings: net: Add support for Spacemit K3 dwmac
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@...il.com>
---
.../devicetree/bindings/net/snps,dwmac.yaml | 3 +
.../bindings/net/spacemit,k3-dwmac.yaml | 107 ++++++++++++++++++
2 files changed, 110 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 dd3c72e8363e..3c2c6cb6b10b 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -34,6 +34,7 @@ select:
- snps,dwmac-5.10a
- snps,dwmac-5.20
- snps,dwmac-5.30a
+ - snps,dwmac-5.40a
- snps,dwxgmac
- snps,dwxgmac-2.10
@@ -108,6 +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
@@ -653,6 +655,7 @@ 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..58dd98f79e8a
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/spacemit,k3-dwmac.yaml
@@ -0,0 +1,107 @@
+# 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@...il.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:
+ minItems: 3
+ items:
+ - description: GMAC main clock
+ - description: PTP clock
+ - description: TX clock
+ - description: PHY clock
+
+ clock-names:
+ minItems: 3
+ items:
+ - const: stmmaceth
+ - const: ptp_ref
+ - const: tx
+ - const: phy
+
+ 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
+
+allOf:
+ - $ref: snps,dwmac.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ eth0: ethernet@...80000 {
+ 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>;
+ };
+
--
2.52.0
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