Merge tag 'arm-soc/for-4.4/devicetree' of http://github.com/Broadcom/stblinux into next/dt

Merge "Broadcom devicetree changes for v4.4" from Florian Fainelli:

This pull requests contains the following Broadcom SoCs Device Tree changes:

- Brian Norris documents the BCM7445 SoCs Power Management controllers and
  hardware and updates the reference BCM7445 Device Tree with these nodes

- Florian Fainelli documents the BCM7xxx write-pairing feature in the top-level
  BCM7xxx binding document

- Hauke Merthens enables the NAND controller for the Asus RT-AC87U and adds the
  GPIO pin controlling the USB power supply on Netgear R6250

- Jon Mason adds support for the NorthStar Plus SoC by providing a top-level
  binding document and the minimalist device tree skeleton for these SoCs

- Rafal Milecki adds support for the Netgear R7000 (BCM5301x SoC)

- Ray Jui provides a set of Cygnus DT changes that make the Device Tree clearer
  and more correct with respect to how the hardware is designed. He also enables
  the NAND controller on the bcm911360_entphn design, enables a bunch of
  peripherals on the bcm958305k evaluation board, and adds a skeleton .dtsi file
  for the touchscreen extansion board(s)

* tag 'arm-soc/for-4.4/devicetree' of http://github.com/Broadcom/stblinux:
  ARM: dts: move aliases back to .dts in Cygnus
  ARM: dts: fix Cygnus nand device node
  ARM: dts: enable touchscreen support on Cygnus
  ARM: dts: Enable NAND support on bcm911360_entphn
  ARM: dts: Enable various peripherals on bcm958305k
  ARM: dts: Reorder Cygnus peripherals
  ARM: dts: Move all Cygnus peripherals into axi bus
  ARM: dts: Put Cygnus core components under core bus
  ARM: dts: Use label for device nodes in Cygnus dts
  ARM: dts: consolidate aliases for Cygnus dt files
  ARM: BCM5301X: Netgear R6250 add USB GPIO
  Documentation: bindings: brcmstb: Document write-pairing
  ARM: dts: brcmstb: add BCM7445 system PM DT nodes
  Documentation: dt: brcmstb: add system PM bindings
  ARM: BCM5301X: add NAND flash chip description for Asus RT-AC87U
  ARM: BCM5301X: Add DT for Netgear R7000
  ARM: NSP: add minimal Northstar Plus device tree
  dt-bindings: Create Documentation for NSP DT bindings

2 files changed, 194 insertions, 2 deletions

diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt b/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt
index 430608ec09f0..0d0c1ae81bed 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt
@@ -20,6 +20,25 @@ system control is required:
     - compatible: "brcm,bcm<chip_id>-hif-cpubiuctrl", "syscon"
     - compatible: "brcm,bcm<chip_id>-hif-continuation", "syscon"
 
+hif-cpubiuctrl node
+-------------------
+SoCs with Broadcom Brahma15 ARM-based CPUs have a specific Bus Interface Unit
+(BIU) block which controls and interfaces the CPU complex to the different
+Memory Controller Ports (MCP), one per memory controller (MEMC). This BIU block
+offers a feature called Write Pairing which consists in collapsing two adjacent
+cache lines into a single (bursted) write transaction towards the memory
+controller (MEMC) to maximize write bandwidth.
+
+Required properties:
+
+    - compatible: must be "brcm,bcm7445-hif-cpubiuctrl", "syscon"
+
+Optional properties:
+
+    - brcm,write-pairing:
+	Boolean property, which when present indicates that the chip
+	supports write-pairing.
+
 example:
     rdb {
         #address-cells = <1>;
@@ -35,6 +54,7 @@ example:
         hif_cpubiuctrl: syscon@3e2400 {
             compatible = "brcm,bcm7445-hif-cpubiuctrl", "syscon";
             reg = <0x3e2400 0x5b4>;
+            brcm,write-pairing;
         };
 
         hif_continuation: syscon@452000 {
@@ -43,8 +63,7 @@ example:
         };
     };
 
-Lastly, nodes that allow for support of SMP initialization and reboot are
-required:
+Nodes that allow for support of SMP initialization and reboot are required:
 
 smpboot
 -------
@@ -95,3 +114,142 @@ example:
         compatible = "brcm,brcmstb-reboot";
         syscon = <&sun_top_ctrl 0x304 0x308>;
     };
+
+
+
+Power management
+----------------
+
+For power management (particularly, S2/S3/S5 system suspend), the following SoC
+components are needed:
+
+= Always-On control block (AON CTRL)
+
+This hardware provides control registers for the "always-on" (even in low-power
+modes) hardware, such as the Power Management State Machine (PMSM).
+
+Required properties:
+- compatible     : should contain "brcm,brcmstb-aon-ctrl"
+- reg            : the register start and length for the AON CTRL block
+
+Example:
+
+aon-ctrl@410000 {
+	compatible = "brcm,brcmstb-aon-ctrl";
+	reg = <0x410000 0x400>;
+};
+
+= Memory controllers
+
+A Broadcom STB SoC typically has a number of independent memory controllers,
+each of which may have several associated hardware blocks, which are versioned
+independently (control registers, DDR PHYs, etc.). One might consider
+describing these controllers as a parent "memory controllers" block, which
+contains N sub-nodes (one for each controller in the system), each of which is
+associated with a number of hardware register resources (e.g., its PHY). See
+the example device tree snippet below.
+
+== MEMC (MEMory Controller)
+
+Represents a single memory controller instance.
+
+Required properties:
+- compatible     : should contain "brcm,brcmstb-memc" and "simple-bus"
+
+Should contain subnodes for any of the following relevant hardware resources:
+
+== DDR PHY control
+
+Control registers for this memory controller's DDR PHY.
+
+Required properties:
+- compatible     : should contain one of these
+	"brcm,brcmstb-ddr-phy-v225.1"
+	"brcm,brcmstb-ddr-phy-v240.1"
+	"brcm,brcmstb-ddr-phy-v240.2"
+
+- reg            : the DDR PHY register range
+
+== DDR SHIMPHY
+
+Control registers for this memory controller's DDR SHIMPHY.
+
+Required properties:
+- compatible     : should contain "brcm,brcmstb-ddr-shimphy-v1.0"
+- reg            : the DDR SHIMPHY register range
+
+== MEMC DDR control
+
+Sequencer DRAM parameters and control registers. Used for Self-Refresh
+Power-Down (SRPD), among other things.
+
+Required properties:
+- compatible     : should contain "brcm,brcmstb-memc-ddr"
+- reg            : the MEMC DDR register range
+
+Example:
+
+memory_controllers {
+	ranges;
+	compatible = "simple-bus";
+
+	memc@0 {
+		compatible = "brcm,brcmstb-memc", "simple-bus";
+		ranges;
+
+		ddr-phy@f1106000 {
+			compatible = "brcm,brcmstb-ddr-phy-v240.1";
+			reg = <0xf1106000 0x21c>;
+		};
+
+		shimphy@f1108000 {
+			compatible = "brcm,brcmstb-ddr-shimphy-v1.0";
+			reg = <0xf1108000 0xe4>;
+		};
+
+		memc-ddr@f1102000 {
+			reg = <0xf1102000 0x800>;
+			compatible = "brcm,brcmstb-memc-ddr";
+		};
+	};
+
+	memc@1 {
+		compatible = "brcm,brcmstb-memc", "simple-bus";
+		ranges;
+
+		ddr-phy@f1186000 {
+			compatible = "brcm,brcmstb-ddr-phy-v240.1";
+			reg = <0xf1186000 0x21c>;
+		};
+
+		shimphy@f1188000 {
+			compatible = "brcm,brcmstb-ddr-shimphy-v1.0";
+			reg = <0xf1188000 0xe4>;
+		};
+
+		memc-ddr@f1182000 {
+			reg = <0xf1182000 0x800>;
+			compatible = "brcm,brcmstb-memc-ddr";
+		};
+	};
+
+	memc@2 {
+		compatible = "brcm,brcmstb-memc", "simple-bus";
+		ranges;
+
+		ddr-phy@f1206000 {
+			compatible = "brcm,brcmstb-ddr-phy-v240.1";
+			reg = <0xf1206000 0x21c>;
+		};
+
+		shimphy@f1208000 {
+			compatible = "brcm,brcmstb-ddr-shimphy-v1.0";
+			reg = <0xf1208000 0xe4>;
+		};
+
+		memc-ddr@f1202000 {
+			reg = <0xf1202000 0x800>;
+			compatible = "brcm,brcmstb-memc-ddr";
+		};
+	};
+};
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,nsp.txt b/Documentation/devicetree/bindings/arm/bcm/brcm,nsp.txt
new file mode 100644
index 000000000000..eae53e4556be
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,nsp.txt
@@ -0,0 +1,34 @@
+Broadcom Northstar Plus device tree bindings
+--------------------------------------------
+
+Broadcom Northstar Plus family of SoCs are used for switching control
+and management applications as well as residential router/gateway
+applications. The SoC features dual core Cortex A9 ARM CPUs, integrating
+several peripheral interfaces including multiple Gigabit Ethernet PHYs,
+DDR3 memory, PCIE Gen-2, USB 2.0 and USB 3.0, serial and NAND flash,
+SATA and several other IO controllers.
+
+Boards with Northstar Plus SoCs shall have the following properties:
+
+Required root node property:
+
+BCM58522
+compatible = "brcm,bcm58522", "brcm,nsp";
+
+BCM58525
+compatible = "brcm,bcm58525", "brcm,nsp";
+
+BCM58535
+compatible = "brcm,bcm58535", "brcm,nsp";
+
+BCM58622
+compatible = "brcm,bcm58622", "brcm,nsp";
+
+BCM58623
+compatible = "brcm,bcm58623", "brcm,nsp";
+
+BCM58625
+compatible = "brcm,bcm58625", "brcm,nsp";
+
+BCM88312
+compatible = "brcm,bcm88312", "brcm,nsp";