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Message-ID: <20241021103617.653386-3-inochiama@gmail.com>
Date: Mon, 21 Oct 2024 18:36:15 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: Chen Wang <unicorn_wang@...look.com>,
	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>,
	Inochi Amaoto <inochiama@...look.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jose Abreu <joabreu@...opsys.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Richard Cochran <richardcochran@...il.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Giuseppe Cavallaro <peppe.cavallaro@...com>
Cc: Yixun Lan <dlan@...too.org>,
	Inochi Amaoto <inochiama@...il.com>,
	netdev@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-riscv@...ts.infradead.org
Subject: [PATCH 2/4] dt-bindings: net: Add support for Sophgo SG2044 dwmac

The GMAC IP on SG2044 is almost a standard Synopsys DesignWare MAC
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   |   1 +
 .../bindings/net/sophgo,sg2044-dwmac.yaml     | 145 ++++++++++++++++++
 2 files changed, 146 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/sophgo,sg2044-dwmac.yaml

diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 3c4007cb65f8..69f6bb36970b 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -99,6 +99,7 @@ properties:
         - snps,dwmac-5.30a
         - snps,dwxgmac
         - snps,dwxgmac-2.10
+        - sophgo,sg2044-dwmac
         - starfive,jh7100-dwmac
         - starfive,jh7110-dwmac
 
diff --git a/Documentation/devicetree/bindings/net/sophgo,sg2044-dwmac.yaml b/Documentation/devicetree/bindings/net/sophgo,sg2044-dwmac.yaml
new file mode 100644
index 000000000000..93c41550b0b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/sophgo,sg2044-dwmac.yaml
@@ -0,0 +1,145 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/sophgo,sg2044-dwmac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 DWMAC glue layer
+
+maintainers:
+  - Inochi Amaoto <inochiama@...il.com>
+
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - sophgo,sg2044-dwmac
+  required:
+    - compatible
+
+properties:
+  compatible:
+    items:
+      - const: sophgo,sg2044-dwmac
+      - const: snps,dwmac-5.30a
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: GMAC main clock
+      - description: PTP clock
+      - description: TX clock
+
+  clock-names:
+    items:
+      - const: stmmaceth
+      - const: ptp_ref
+      - const: tx
+
+  sophgo,syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      - items:
+          - description: phandle to syscon that configures phy
+          - description: offset of phy mode register
+          - description: length of the phy mode register
+    description:
+      A phandle to syscon with two arguments that configure phy mode.
+      The argument one is the offset of phy mode register, the
+      argument two is the length of phy mode register.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+  - interrupt-names
+  - resets
+  - reset-names
+
+allOf:
+  - $ref: snps,dwmac.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: sophgo,sg2044-dwmac
+    then:
+      properties:
+        interrupts:
+          minItems: 1
+          maxItems: 1
+
+        interrupt-names:
+          minItems: 1
+          maxItems: 1
+
+        resets:
+          maxItems: 1
+
+        reset-names:
+          const: stmmaceth
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    ethernet@...06000 {
+      compatible = "sophgo,sg2044-dwmac", "snps,dwmac-5.30a";
+      reg = <0x30006000 0x4000>;
+      clocks = <&clk 151>, <&clk 152>, <&clk 154>;
+      clock-names = "stmmaceth", "ptp_ref", "tx";
+      interrupt-parent = <&intc>;
+      interrupts = <296 IRQ_TYPE_LEVEL_HIGH>;
+      interrupt-names = "macirq";
+      resets = <&rst 30>;
+      reset-names = "stmmaceth";
+      snps,multicast-filter-bins = <0>;
+      snps,perfect-filter-entries = <1>;
+      snps,aal;
+      snps,tso;
+      snps,txpbl = <32>;
+      snps,rxpbl = <32>;
+      snps,mtl-rx-config = <&gmac0_mtl_rx_setup>;
+      snps,mtl-tx-config = <&gmac0_mtl_tx_setup>;
+      snps,axi-config = <&gmac0_stmmac_axi_setup>;
+      status = "disabled";
+
+      gmac0_mtl_rx_setup: rx-queues-config {
+        snps,rx-queues-to-use = <8>;
+        snps,rx-sched-wsp;
+        queue0 {};
+        queue1 {};
+        queue2 {};
+        queue3 {};
+        queue4 {};
+        queue5 {};
+        queue6 {};
+        queue7 {};
+      };
+
+      gmac0_mtl_tx_setup: tx-queues-config {
+        snps,tx-queues-to-use = <8>;
+        queue0 {};
+        queue1 {};
+        queue2 {};
+        queue3 {};
+        queue4 {};
+        queue5 {};
+        queue6 {};
+        queue7 {};
+      };
+
+      gmac0_stmmac_axi_setup: stmmac-axi-config {
+        snps,blen = <16 8 4 0 0 0 0>;
+        snps,wr_osr_lmt = <1>;
+        snps,rd_osr_lmt = <2>;
+      };
+    };
-- 
2.47.0


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