[PATCH 2/5] dt-bindings: net: add schema for NXP S32CC dwmac glue driver

[Chester Lin]

Add the DT schema for the DWMAC Ethernet controller on NXP S32 Common
Chassis.

Signed-off-by: Jan Petrous <jan.petrous@xxxxxxx>
Signed-off-by: Chester Lin <clin@xxxxxxxx>
---
 .../bindings/net/nxp,s32cc-dwmac.yaml         | 145 ++++++++++++++++++
 1 file changed, 145 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/nxp,s32cc-dwmac.yaml

diff --git a/Documentation/devicetree/bindings/net/nxp,s32cc-dwmac.yaml b/Documentation/devicetree/bindings/net/nxp,s32cc-dwmac.yaml
new file mode 100644
index 000000000000..f6b8486f9d42
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nxp,s32cc-dwmac.yaml
@@ -0,0 +1,145 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2021-2022 NXP
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/net/nxp,s32cc-dwmac.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";
+
+title: NXP S32CC DWMAC Ethernet controller
+
+maintainers:
+  - Jan Petrous <jan.petrous@xxxxxxx>
+  - Chester Lin <clin@xxxxxxxx>
+
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - nxp,s32cc-dwmac
+  required:
+    - compatible
+
+allOf:
+  - $ref: "snps,dwmac.yaml#"
+
+properties:
+  compatible:
+    contains:
+      enum:
+        - nxp,s32cc-dwmac
+
+  reg:
+    items:
+      - description: Main GMAC registers
+      - description: S32 MAC control registers
+
+  dma-coherent:
+    description:
+      Declares GMAC device as DMA coherent
+
+  clocks:
+    items:
+      - description: Main GMAC clock
+      - description: Peripheral registers clock
+      - description: Transmit SGMII clock
+      - description: Transmit RGMII clock
+      - description: Transmit RMII clock
+      - description: Transmit MII clock
+      - description: Receive SGMII clock
+      - description: Receive RGMII clock
+      - description: Receive RMII clock
+      - description: Receive MII clock
+      - description:
+          PTP reference clock. This clock is used for programming the
+          Timestamp Addend Register. If not passed then the system
+          clock will be used.
+
+  clock-names:
+    items:
+      - const: stmmaceth
+      - const: pclk
+      - const: tx_sgmii
+      - const: tx_rgmii
+      - const: tx_rmii
+      - const: tx_mii
+      - const: rx_sgmii
+      - const: rx_rgmii
+      - const: rx_rmii
+      - const: rx_mii
+      - const: ptp_ref
+
+  tx-fifo-depth:
+    const: 20480
+
+  rx-fifo-depth:
+    const: 20480
+
+required:
+  - compatible
+  - reg
+  - tx-fifo-depth
+  - rx-fifo-depth
+  - clocks
+  - clock-names
+
+additionalProperties: true
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    #define S32GEN1_SCMI_CLK_GMAC0_AXI
+    #define S32GEN1_SCMI_CLK_GMAC0_TX_SGMII
+    #define S32GEN1_SCMI_CLK_GMAC0_TX_RGMII
+    #define S32GEN1_SCMI_CLK_GMAC0_TX_RMII
+    #define S32GEN1_SCMI_CLK_GMAC0_TX_MII
+    #define S32GEN1_SCMI_CLK_GMAC0_RX_SGMII
+    #define S32GEN1_SCMI_CLK_GMAC0_RX_RGMII
+    #define S32GEN1_SCMI_CLK_GMAC0_RX_RMII
+    #define S32GEN1_SCMI_CLK_GMAC0_RX_MII
+    #define S32GEN1_SCMI_CLK_GMAC0_TS
+
+    soc {
+      #address-cells = <1>;
+      #size-cells = <1>;
+
+      gmac0: ethernet@4033c000 {
+        compatible = "nxp,s32cc-dwmac";
+        reg = <0x4033c000 0x2000>, /* gmac IP */
+              <0x4007C004 0x4>;    /* S32 CTRL_STS reg */
+        interrupt-parent = <&gic>;
+        interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "macirq";
+        phy-mode = "rgmii-id";
+        tx-fifo-depth = <20480>;
+        rx-fifo-depth = <20480>;
+        dma-coherent;
+        clocks = <&clks S32GEN1_SCMI_CLK_GMAC0_AXI>,
+                 <&clks S32GEN1_SCMI_CLK_GMAC0_AXI>,
+                 <&clks S32GEN1_SCMI_CLK_GMAC0_TX_SGMII>,
+                 <&clks S32GEN1_SCMI_CLK_GMAC0_TX_RGMII>,
+                 <&clks S32GEN1_SCMI_CLK_GMAC0_TX_RMII>,
+                 <&clks S32GEN1_SCMI_CLK_GMAC0_TX_MII>,
+                 <&clks S32GEN1_SCMI_CLK_GMAC0_RX_SGMII>,
+                 <&clks S32GEN1_SCMI_CLK_GMAC0_RX_RGMII>,
+                 <&clks S32GEN1_SCMI_CLK_GMAC0_RX_RMII>,
+                 <&clks S32GEN1_SCMI_CLK_GMAC0_RX_MII>,
+                 <&clks S32GEN1_SCMI_CLK_GMAC0_TS>;
+        clock-names = "stmmaceth", "pclk",
+                      "tx_sgmii", "tx_rgmii", "tx_rmii", "tx_mii",
+                      "rx_sgmii", "rx_rgmii", "rx_rmii", "rx_mii",
+                      "ptp_ref";
+
+        gmac0_mdio: mdio {
+          #address-cells = <1>;
+          #size-cells = <0>;
+          compatible = "snps,dwmac-mdio";
+
+          ethernet-phy@4 {
+            reg = <0x04>;
+          };
+        };
+      };
+    };
-- 
2.37.3