Merge branch 'loongson1-mac'

Keguang Zhang says:

====================
Move Loongson1 MAC arch-code to the driver dir

In order to convert Loongson1 MAC platform devices to the devicetree
nodes, Loongson1 MAC arch-code should be moved to the driver dir.
Add dt-binding document and update MAINTAINERS file accordingly.

In other words, this patchset is a preparation for converting
Loongson1 platform devices to devicetree.

Changelog
V4 -> V5: Replace stmmac_probe_config_dt() with devm_stmmac_probe_config_dt()
          Replace stmmac_pltfr_probe() with devm_stmmac_pltfr_probe()
          Squash patch 4 into patch 2 and 3
V3 -> V4: Add Acked-by tag from Krzysztof Kozlowski
          Add "|" to description part
          Amend "phy-mode" property
          Drop ls1x_dwmac_syscon definition and its instances
          Drop three redundant fields from the ls1x_dwmac structure
          Drop the ls1x_dwmac_init() method.
          Update the dt-binding document entry of Loongson1 Ethernet
          Some minor improvements
V2 -> V3: Split the DT-schema file into loongson,ls1b-gmac.yaml
          and loongson,ls1c-emac.yaml (suggested by Serge Semin)
          Change the compatibles to loongson,ls1b-gmac and loongson,ls1c-emac
          Rename loongson,dwmac-syscon to loongson,ls1-syscon
          Amend the title
          Add description
          Add Reviewed-by tag from Krzysztof Kozlowski
          Change compatibles back to loongson,ls1b-syscon
          and loongson,ls1c-syscon
          Determine the device ID by physical
          base address(suggested by Serge Semin)
          Use regmap instead of regmap fields
          Use syscon_regmap_lookup_by_phandle()
          Some minor fixes
          Update the entries of MAINTAINERS
V1 -> V2: Leave the Ethernet platform data for now
          Make the syscon compatibles more specific
          Fix "clock-names" and "interrupt-names" property
          Rename the syscon property to "loongson,dwmac-syscon"
          Drop "phy-handle" and "phy-mode" requirement
          Revert adding loongson,ls1b-dwmac/loongson,ls1c-dwmac
          to snps,dwmac.yaml
          Fix the build errors due to CONFIG_OF being unset
          Change struct reg_field definitions to const
          Rename the syscon property to "loongson,dwmac-syscon"
          Add MII PHY mode for LS1C
          Improve the commit message
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/mfd/syscon.yaml

@@ -49,6 +49,8 @@ properties:
               - hisilicon,peri-subctrl
               - hpe,gxp-sysreg
               - intel,lgm-syscon
+              - loongson,ls1b-syscon
+              - loongson,ls1c-syscon
               - marvell,armada-3700-usb2-host-misc
               - mediatek,mt8135-pctl-a-syscfg
               - mediatek,mt8135-pctl-b-syscfg

Documentation/devicetree/bindings/net/loongson,ls1b-gmac.yaml

@@ -0,0 +1,114 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/loongson,ls1b-gmac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Loongson-1B Gigabit Ethernet MAC Controller
+
+maintainers:
+  - Keguang Zhang <keguang.zhang@gmail.com>
+
+description: |
+  Loongson-1B Gigabit Ethernet MAC Controller is based on
+  Synopsys DesignWare MAC (version 3.50a).
+
+  Main features
+  - Dual 10/100/1000Mbps GMAC controllers
+  - Full-duplex operation (IEEE 802.3x flow control automatic transmission)
+  - Half-duplex operation (CSMA/CD Protocol and back-pressure support)
+  - RX Checksum Offload
+  - TX Checksum insertion
+  - MII interface
+  - RGMII interface
+
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - loongson,ls1b-gmac
+  required:
+    - compatible
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - loongson,ls1b-gmac
+      - const: snps,dwmac-3.50a
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: stmmaceth
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-names:
+    items:
+      - const: macirq
+
+  loongson,ls1-syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to the syscon containing some extra configurations
+      including PHY interface mode.
+
+  phy-mode:
+    enum:
+      - mii
+      - rgmii-id
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+  - interrupt-names
+  - loongson,ls1-syscon
+
+allOf:
+  - $ref: snps,dwmac.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/loongson,ls1x-clk.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    gmac0: ethernet@1fe10000 {
+        compatible = "loongson,ls1b-gmac", "snps,dwmac-3.50a";
+        reg = <0x1fe10000 0x10000>;
+
+        clocks = <&clkc LS1X_CLKID_AHB>;
+        clock-names = "stmmaceth";
+
+        interrupt-parent = <&intc1>;
+        interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "macirq";
+
+        loongson,ls1-syscon = <&syscon>;
+
+        phy-handle = <&phy0>;
+        phy-mode = "mii";
+        snps,pbl = <1>;
+
+        mdio {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            compatible = "snps,dwmac-mdio";
+
+            phy0: ethernet-phy@0 {
+                reg = <0x0>;
+            };
+        };
+    };

Documentation/devicetree/bindings/net/loongson,ls1c-emac.yaml

@@ -0,0 +1,113 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/loongson,ls1c-emac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Loongson-1C Ethernet MAC Controller
+
+maintainers:
+  - Keguang Zhang <keguang.zhang@gmail.com>
+
+description: |
+  Loongson-1C Ethernet MAC Controller is based on
+  Synopsys DesignWare MAC (version 3.50a).
+
+  Main features
+  - 10/100Mbps
+  - Full-duplex operation (IEEE 802.3x flow control automatic transmission)
+  - Half-duplex operation (CSMA/CD Protocol and back-pressure support)
+  - IEEE 802.1Q VLAN tag detection for reception frames
+  - MII interface
+  - RMII interface
+
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - loongson,ls1c-emac
+  required:
+    - compatible
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - loongson,ls1c-emac
+      - const: snps,dwmac-3.50a
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: stmmaceth
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-names:
+    items:
+      - const: macirq
+
+  loongson,ls1-syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to the syscon containing some extra configurations
+      including PHY interface mode.
+
+  phy-mode:
+    enum:
+      - mii
+      - rmii
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+  - interrupt-names
+  - loongson,ls1-syscon
+
+allOf:
+  - $ref: snps,dwmac.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/loongson,ls1x-clk.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    emac: ethernet@1fe10000 {
+        compatible = "loongson,ls1c-emac", "snps,dwmac-3.50a";
+        reg = <0x1fe10000 0x10000>;
+
+        clocks = <&clkc LS1X_CLKID_AHB>;
+        clock-names = "stmmaceth";
+
+        interrupt-parent = <&intc1>;
+        interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "macirq";
+
+        loongson,ls1-syscon = <&syscon>;
+
+        phy-handle = <&phy0>;
+        phy-mode = "mii";
+        snps,pbl = <1>;
+
+        mdio {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            compatible = "snps,dwmac-mdio";
+
+            phy0: ethernet-phy@13 {
+                reg = <0x13>;
+            };
+        };
+    };

MAINTAINERS

@@ -14344,9 +14344,11 @@ MIPS/LOONGSON1 ARCHITECTURE
 M:	Keguang Zhang <keguang.zhang@gmail.com>
 L:	linux-mips@vger.kernel.org
 S:	Maintained
+F:	Documentation/devicetree/bindings/*/loongson,ls1*.yaml
 F:	arch/mips/include/asm/mach-loongson32/
 F:	arch/mips/loongson32/
 F:	drivers/*/*loongson1*
+F:	drivers/net/ethernet/stmicro/stmmac/dwmac-loongson1.c
 
 MIPS/LOONGSON2EF ARCHITECTURE
 M:	Jiaxun Yang <jiaxun.yang@flygoat.com>

drivers/net/ethernet/stmicro/stmmac/Kconfig

@@ -239,6 +239,17 @@ config DWMAC_INTEL_PLAT
 	  the stmmac device driver. This driver is used for the Intel Keem Bay
 	  SoC.
 
+config DWMAC_LOONGSON1
+	tristate "Loongson1 GMAC support"
+	default MACH_LOONGSON32
+	depends on OF && (MACH_LOONGSON32 || COMPILE_TEST)
+	help
+	  Support for ethernet controller on Loongson1 SoC.
+
+	  This selects Loongson1 SoC glue layer support for the stmmac
+	  device driver. This driver is used for Loongson1-based boards
+	  like Loongson LS1B/LS1C.
+
 config DWMAC_TEGRA
 	tristate "NVIDIA Tegra MGBE support"
 	depends on ARCH_TEGRA || COMPILE_TEST

drivers/net/ethernet/stmicro/stmmac/Makefile

@@ -29,6 +29,7 @@ obj-$(CONFIG_DWMAC_SUNXI)	+= dwmac-sunxi.o
 obj-$(CONFIG_DWMAC_SUN8I)	+= dwmac-sun8i.o
 obj-$(CONFIG_DWMAC_DWC_QOS_ETH)	+= dwmac-dwc-qos-eth.o
 obj-$(CONFIG_DWMAC_INTEL_PLAT)	+= dwmac-intel-plat.o
+obj-$(CONFIG_DWMAC_LOONGSON1)	+= dwmac-loongson1.o
 obj-$(CONFIG_DWMAC_GENERIC)	+= dwmac-generic.o
 obj-$(CONFIG_DWMAC_IMX8)	+= dwmac-imx.o
 obj-$(CONFIG_DWMAC_TEGRA)	+= dwmac-tegra.o