Commit 5339f9d4 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'devicetree-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux 

Pull DeviceTree updates from Rob Herring:

 - Rework and export the changeset API to make it available to users
   other than DT overlays

 - ARM secure devices binding

 - OCTEON USB binding

 - Clean-up of various SRAM binding docs

 - Various other binding doc updates

* tag 'devicetree-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (21 commits)
  drivers/of: Export OF changeset functions
  Fix documentation for adp1653 DT
  ARM: psci: Fix indentation in DT bindings
  of/platform: export of_default_bus_match_table
  of/unittest: Show broken behaviour in the platform bus
  of: fix declaration of of_io_request_and_map
  of/address: replace printk(KERN_ERR ...) with pr_err(...)
  of/irq: optimize device node matching loop in of_irq_init()
  dt-bindings: tda998x: Document the required 'port' node.
  net/macb: bindings doc: Merge cdns-emac to macb
  dt-bindings: Misc fix for the ATH79 DDR controllers
  dt-bindings: Misc fix for the ATH79 MISC interrupt controllers
  Documentation: dt: Add bindings for Secure-only devices
  dt-bindings: ARM: add arm,cortex-a72 compatible string
  ASoC: Atmel: ClassD: add GCK's parent clock in DT binding
  DT: add Olimex to vendor prefixes
  Documentation: fsl-quadspi: Add fsl,ls1021-qspi compatible string
  Documentation/devicetree: document OCTEON USB bindings
  usb: misc: usb3503: Describe better how to bind clock to the hub
  dt-bindings: Consolidate SRAM bindings from all vendors
  ...
parents cf8d7e38 18322377

Documentation/devicetree/bindings/arm/arm,scpi.txt

+1 −1
Original line number Diff line number Diff line
@@ -63,7 +63,7 @@ Required properties: 
- compatible : should be "arm,juno-sram-ns" for Non-secure SRAM on Juno



The rest of the properties should follow the generic mmio-sram description

found in ../../misc/sysram.txt

found in ../../sram/sram.txt



Each sub-node represents the reserved area for SCPI.

Documentation/devicetree/bindings/arm/cpus.txt

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@@ -157,6 +157,7 @@ nodes to be present and contain the properties described below. 
			    "arm,cortex-a17"

			    "arm,cortex-a53"

			    "arm,cortex-a57"

			    "arm,cortex-a72"

			    "arm,cortex-m0"

			    "arm,cortex-m0+"

			    "arm,cortex-m1"

Documentation/devicetree/bindings/arm/psci.txt

+14 −11
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@@ -23,17 +23,20 @@ Main node required properties: 


 - compatible    : should contain at least one of:



				 * "arm,psci" : for implementations complying to PSCI versions prior to

					0.2. For these cases function IDs must be provided.



				 * "arm,psci-0.2" : for implementations complying to PSCI 0.2. Function

					IDs are not required and should be ignored by an OS with PSCI 0.2

					support, but are permitted to be present for compatibility with

					existing software when "arm,psci" is later in the compatible list.



				* "arm,psci-1.0" : for implementations complying to PSCI 1.0. PSCI 1.0 is

					backward compatible with PSCI 0.2 with minor specification updates,

					as defined in the PSCI specification[2].

     * "arm,psci"     : For implementations complying to PSCI versions prior

			to 0.2.

			For these cases function IDs must be provided.



     * "arm,psci-0.2" : For implementations complying to PSCI 0.2.

			Function IDs are not required and should be ignored by

			an OS with PSCI 0.2 support, but are permitted to be

			present for compatibility with existing software when

			"arm,psci" is later in the compatible list.



     * "arm,psci-1.0" : For implementations complying to PSCI 1.0.

			PSCI 1.0 is backward compatible with PSCI 0.2 with

			minor specification updates, as defined in the PSCI

			specification[2].



 - method        : The method of calling the PSCI firmware. Permitted

                   values are:

Documentation/devicetree/bindings/arm/secure.txt

0 → 100644
+53 −0
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* ARM Secure world bindings



ARM CPUs with TrustZone support have two distinct address spaces,

"Normal" and "Secure". Most devicetree consumers (including the Linux

kernel) are not TrustZone aware and run entirely in either the Normal

world or the Secure world. However some devicetree consumers are

TrustZone aware and need to be able to determine whether devices are

visible only in the Secure address space, only in the Normal address

space, or visible in both. (One example of that situation would be a

virtual machine which boots Secure firmware and wants to tell the

firmware about the layout of the machine via devicetree.)



The general principle of the naming scheme for Secure world bindings

is that any property that needs a different value in the Secure world

can be supported by prefixing the property name with "secure-". So for

instance "secure-foo" would override "foo". For property names with

a vendor prefix, the Secure variant of "vendor,foo" would be

"vendor,secure-foo". If there is no "secure-" property then the Secure

world value is the same as specified for the Normal world by the

non-prefixed property. However, only the properties listed below may

validly have "secure-" versions; this list will be enlarged on a

case-by-case basis.



Defining the bindings in this way means that a device tree which has

been annotated to indicate the presence of Secure-only devices can

still be processed unmodified by existing Non-secure software (and in

particular by the kernel).



Note that it is still valid for bindings intended for purely Secure

world consumers (like kernels that run entirely in Secure) to simply

describe the view of Secure world using the standard bindings. These

secure- bindings only need to be used where both the Secure and Normal

world views need to be described in a single device tree.



Valid Secure world properties:



- secure-status : specifies whether the device is present and usable

  in the secure world. The combination of this with "status" allows

  the various possible combinations of device visibility to be

  specified. If "secure-status" is not specified it defaults to the

  same value as "status"; if "status" is not specified either then

  both default to "okay". This means the following combinations are

  possible:



   /* Neither specified: default to visible in both S and NS */

   secure-status = "okay";                          /* visible in both */

   status = "okay";                                 /* visible in both */

   status = "okay"; secure-status = "okay";         /* visible in both */

   secure-status = "disabled";                      /* NS-only */

   status = "okay"; secure-status = "disabled";     /* NS-only */

   status = "disabled"; secure-status = "okay";     /* S-only */

   status = "disabled";                             /* disabled in both */

   status = "disabled"; secure-status = "disabled"; /* disabled in both */

Documentation/devicetree/bindings/display/bridge/tda998x.txt

+4 −0
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@@ -5,6 +5,10 @@ Required properties; 


  - reg: I2C address



Required node:

  - port: Input port node with endpoint definition, as described

        in Documentation/devicetree/bindings/graph.txt



Optional properties:

  - interrupts: interrupt number and trigger type

	default: polling

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