Merge branch 'ti-am65x-cpts-follow-up-dt-bindings-update'

Grygorii Strashko says:

====================
net: ethernet: ti: am65x-cpts: follow up dt bindings update

This series is follow update for  TI A65x/J721E Common platform time sync (CPTS)
driver [1] to implement  DT bindings review comments from
Rob Herring <robh@kernel.org> [2].
 - "reg" and "compatible" properties are made required for CPTS DT nodes which
   also required to change K3 CPSW driver to use of_platform_device_create()
   instead of of_platform_populate() for proper CPTS and MDIO initialization
 - minor DT bindings format changes
 - K3 CPTS example added to K3 MCU CPSW bindings

[1] https://lwn.net/Articles/819313/
[2] https://lwn.net/ml/linux-kernel/20200505040419.GA8509@bogus/
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml

@@ -144,7 +144,7 @@ patternProperties:
     description:
       CPSW MDIO bus.
 
-  "^cpts$":
+  "^cpts@[0-9a-f]+":
     type: object
     allOf:
       - $ref: "ti,k3-am654-cpts.yaml#"
@@ -171,6 +171,8 @@ examples:
     #include <dt-bindings/pinctrl/k3.h>
     #include <dt-bindings/soc/ti,sci_pm_domain.h>
     #include <dt-bindings/net/ti-dp83867.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
 
     mcu_cpsw: ethernet@46000000 {
         compatible = "ti,am654-cpsw-nuss";
@@ -229,4 +231,15 @@ examples:
                     ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
               };
         };
+
+        cpts@3d000 {
+             compatible = "ti,am65-cpts";
+             reg = <0x0 0x3d000 0x0 0x400>;
+             clocks = <&k3_clks 18 2>;
+             clock-names = "cpts";
+             interrupts-extended = <&gic500 GIC_SPI 858 IRQ_TYPE_LEVEL_HIGH>;
+             interrupt-names = "cpts";
+             ti,cpts-ext-ts-inputs = <4>;
+             ti,cpts-periodic-outputs = <2>;
+        };
     };

Documentation/devicetree/bindings/net/ti,k3-am654-cpts.yaml

@@ -42,7 +42,7 @@ description: |+
 
 properties:
   $nodename:
-    pattern: "^cpts(@.*|-[0-9a-f])*$"
+    pattern: "^cpts@[0-9a-f]+$"
 
   compatible:
     oneOf:
@@ -65,13 +65,13 @@ properties:
     items:
       - const: cpts
 
-  interrupts-extended:
+  interrupts:
     items:
       - description: CPTS events interrupt
 
   interrupt-names:
     items:
-      - const: "cpts"
+      - const: cpts
 
   ti,cpts-ext-ts-inputs:
     allOf:
@@ -107,9 +107,11 @@ properties:
       - clocks
 
 required:
+  - compatible
+  - reg
   - clocks
   - clock-names
-  - interrupts-extended
+  - interrupts
   - interrupt-names
 
 additionalProperties: false
@@ -140,13 +142,4 @@ examples:
                assigned-clock-parents = <&k3_clks 118 11>;
          };
     };
-  - |
 
-    cpts {
-             clocks = <&k3_clks 18 2>;
-             clock-names = "cpts";
-             interrupts-extended = <&gic500 GIC_SPI 858 IRQ_TYPE_LEVEL_HIGH>;
-             interrupt-names = "cpts";
-             ti,cpts-ext-ts-inputs = <4>;
-             ti,cpts-periodic-outputs = <2>;
-    };

arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi

@@ -248,7 +248,9 @@ davinci_mdio: mdio@f00 {
 			bus_freq = <1000000>;
 		};
 
-		cpts {
+		cpts@3d000 {
+			compatible = "ti,am65-cpts";
+			reg = <0x0 0x3d000 0x0 0x400>;
 			clocks = <&mcu_cpsw_cpts_mux>;
 			clock-names = "cpts";
 			interrupts-extended = <&gic500 GIC_SPI 570 IRQ_TYPE_LEVEL_HIGH>;

arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi

@@ -339,7 +339,9 @@ davinci_mdio: mdio@f00 {
 			bus_freq = <1000000>;
 		};
 
-		cpts {
+		cpts@3d000 {
+			compatible = "ti,am65-cpts";
+			reg = <0x0 0x3d000 0x0 0x400>;
 			clocks = <&k3_clks 18 2>;
 			clock-names = "cpts";
 			interrupts-extended = <&gic500 GIC_SPI 858 IRQ_TYPE_LEVEL_HIGH>;

drivers/net/ethernet/ti/am65-cpsw-nuss.c

@@ -2031,10 +2031,21 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
-	/* We do not want to force this, as in some cases may not have child */
-	if (ret)
-		dev_warn(dev, "populating child nodes err:%d\n", ret);
+	node = of_get_child_by_name(dev->of_node, "mdio");
+	if (!node) {
+		dev_warn(dev, "MDIO node not found\n");
+	} else if (of_device_is_available(node)) {
+		struct platform_device *mdio_pdev;
+
+		mdio_pdev = of_platform_device_create(node, NULL, dev);
+		if (!mdio_pdev) {
+			ret = -ENODEV;
+			goto err_pm_clear;
+		}
+
+		common->mdio_dev =  &mdio_pdev->dev;
+	}
+	of_node_put(node);
 
 	am65_cpsw_nuss_get_ver(common);
 
@@ -2090,7 +2101,8 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev)
 	return 0;
 
 err_of_clear:
-	of_platform_depopulate(dev);
+	of_platform_device_destroy(common->mdio_dev, NULL);
+err_pm_clear:
 	pm_runtime_put_sync(dev);
 	pm_runtime_disable(dev);
 	return ret;
@@ -2115,7 +2127,7 @@ static int am65_cpsw_nuss_remove(struct platform_device *pdev)
 	 */
 	am65_cpsw_nuss_cleanup_ndev(common);
 
-	of_platform_depopulate(dev);
+	of_platform_device_destroy(common->mdio_dev, NULL);
 
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);

drivers/net/ethernet/ti/am65-cpsw-nuss.h

@@ -9,6 +9,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/netdevice.h>
+#include <linux/platform_device.h>
 
 struct am65_cpts;
 
@@ -76,6 +77,7 @@ struct am65_cpsw_pdata {
 
 struct am65_cpsw_common {
 	struct device		*dev;
+	struct device		*mdio_dev;
 	const struct am65_cpsw_pdata *pdata;
 
 	void __iomem		*ss_base;