Commit c633e898 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'devicetree-fixes-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux 

Pull DeviceTree fixes from Rob Herring:

 - Remove mc13892 as a trivial device

 - Improve of_find_node_by_name() documentation

 - Fix unit test dtc warnings

 - Clean-ups of USB binding documentation

 - Fix potential NULL deref in of_pci_map_rid

* tag 'devicetree-fixes-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  dt-bindings: trivial-devices: Remove fsl,mc13892
  of: Document exactly what of_find_node_by_name() puts
  of: unittest: disable interrupts_property warning
  of: unittest: let dtc generate __local_fixups__
  dt-bindings: usb: document hub and host-controller properties
  dt-bindings: usb: clean up compatible property
  dt-bindings: usb: fix reg-property port-number range
  dt-bindings: usb: fix example hub node name
  of/pci: Fix theoretical NULL dereference
parents bf8973fc def4db33

Documentation/devicetree/bindings/trivial-devices.txt

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@@ -55,7 +55,6 @@ epson,rx8010 I2C-BUS INTERFACE REAL TIME CLOCK MODULE 
epson,rx8581		I2C-BUS INTERFACE REAL TIME CLOCK MODULE

emmicro,em3027		EM Microelectronic EM3027 Real-time Clock

fsl,mag3110		MAG3110: Xtrinsic High Accuracy, 3D Magnetometer

fsl,mc13892		MC13892: Power Management Integrated Circuit (PMIC) for i.MX35/51

fsl,mma7660		MMA7660FC: 3-Axis Orientation/Motion Detection Sensor

fsl,mma8450		MMA8450Q: Xtrinsic Low-power, 3-axis Xtrinsic Accelerometer

fsl,mpl3115		MPL3115: Absolute Digital Pressure Sensor

Documentation/devicetree/bindings/usb/usb-device.txt

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@@ -4,24 +4,35 @@ Usually, we only use device tree for hard wired USB device. 
The reference binding doc is from:

http://www.devicetree.org/open-firmware/bindings/usb/usb-1_0.ps





Required properties:

- compatible: usbVID,PID. The textual representation of VID, PID shall

  be in lower case hexadecimal with leading zeroes suppressed. The

  other compatible strings from the above standard binding could also

  be used, but a device adhering to this binding may leave out all except

  for usbVID,PID.

- reg: the port number which this device is connecting to, the range

  is 1-31.

- compatible: "usbVID,PID", where VID is the vendor id and PID the product id.

  The textual representation of VID and PID shall be in lower case hexadecimal

  with leading zeroes suppressed. The other compatible strings from the above

  standard binding could also be used, but a device adhering to this binding

  may leave out all except for "usbVID,PID".

- reg: the number of the USB hub port or the USB host-controller port to which

  this device is attached. The range is 1-255.





Required properties for hub nodes with device nodes:

- #address-cells: shall be 1

- #size-cells: shall be 0



Example:



&usb1 {

Required properties for host-controller nodes with device nodes:

- #address-cells: shall be 1

- #size-cells: shall be 0





Example:



&usb1 {	/* host controller */

	#address-cells = <1>;

	#size-cells = <0>;



	hub: genesys@1 {

	hub@1 {	/* hub connected to port 1 */

		compatible = "usb5e3,608";

		reg = <1>;

	};

}
 
};

drivers/of/base.c

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@@ -761,10 +761,10 @@ EXPORT_SYMBOL(of_find_node_opts_by_path); 


/**

 *	of_find_node_by_name - Find a node by its "name" property

 *	@from:	The node to start searching from or NULL, the node

 *	@from:	The node to start searching from or NULL; the node

 *		you pass will not be searched, only the next one

 *		will; typically, you pass what the previous call

 *		returned. of_node_put() will be called on it

 *		will. Typically, you pass what the previous call

 *		returned. of_node_put() will be called on @from.

 *	@name:	The name string to match against

 *

 *	Returns a node pointer with refcount incremented, use

drivers/of/of_pci.c

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@@ -374,7 +374,7 @@ int of_pci_map_rid(struct device_node *np, u32 rid, 


		pr_debug("%pOF: %s, using mask %08x, rid-base: %08x, out-base: %08x, length: %08x, rid: %08x -> %08x\n",

			np, map_name, map_mask, rid_base, out_base,

			rid_len, rid, *id_out);

			rid_len, rid, masked_rid - rid_base + out_base);

		return 0;

	}

drivers/of/unittest-data/Makefile

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# SPDX-License-Identifier: GPL-2.0

DTC_FLAGS_testcases := -Wno-interrupts_property

obj-y += testcases.dtb.o



targets += testcases.dtb testcases.dtb.S

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