These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

6 files changed, 322 insertions, 4 deletions

diff --git a/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt b/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
index ac683480c..c78576bb7 100644
--- a/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
+++ b/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
@@ -1,8 +1,35 @@
 Broadcom BCM2835 device tree bindings
 -------------------------------------------
 
-Boards with the BCM2835 SoC shall have the following properties:
+Raspberry Pi Model A
+Required root node properties:
+compatible = "raspberrypi,model-a", "brcm,bcm2835";
 
-Required root node property:
+Raspberry Pi Model A+
+Required root node properties:
+compatible = "raspberrypi,model-a-plus", "brcm,bcm2835";
 
+Raspberry Pi Model B
+Required root node properties:
+compatible = "raspberrypi,model-b", "brcm,bcm2835";
+
+Raspberry Pi Model B (no P5)
+early model B with I2C0 rather than I2C1 routed to the expansion header
+Required root node properties:
+compatible = "raspberrypi,model-b-i2c0", "brcm,bcm2835";
+
+Raspberry Pi Model B rev2
+Required root node properties:
+compatible = "raspberrypi,model-b-rev2", "brcm,bcm2835";
+
+Raspberry Pi Model B+
+Required root node properties:
+compatible = "raspberrypi,model-b-plus", "brcm,bcm2835";
+
+Raspberry Pi Compute Module
+Required root node properties:
+compatible = "raspberrypi,compute-module", "brcm,bcm2835";
+
+Generic BCM2835 board
+Required root node properties:
 compatible = "brcm,bcm2835";
diff --git a/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,bcm63138.txt b/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,bcm63138.txt
index bd49987a8..b82b6a0ae 100644
--- a/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,bcm63138.txt
+++ b/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,bcm63138.txt
@@ -7,3 +7,79 @@ following properties:
 Required root node property:
 
 compatible: should be "brcm,bcm63138"
+
+An optional Boot lookup table Device Tree node is required for secondary CPU
+initialization as well as a 'resets' phandle to the correct PMB controller as
+defined in reset/brcm,bcm63138-pmb.txt for this secondary CPU, and an
+'enable-method' property.
+
+Required properties for the Boot lookup table node:
+- compatible: should be "brcm,bcm63138-bootlut"
+- reg: register base address and length for the Boot Lookup table
+
+Optional properties for the primary CPU node:
+- enable-method: should be "brcm,bcm63138"
+
+Optional properties for the secondary CPU node:
+- enable-method: should be "brcm,bcm63138"
+- resets: phandle to the relevant PMB controller, one integer indicating the internal
+  bus number, and a second integer indicating the address of the CPU in the PMB
+  internal bus number.
+
+Example:
+
+	cpus {
+		cpu@0 {
+			compatible = "arm,cotex-a9";
+			reg = <0>;
+			...
+			enable-method = "brcm,bcm63138";
+		};
+
+		cpu@1 {
+			compatible = "arm,cortex-a9";
+			reg = <1>;
+			...
+			enable-method = "brcm,bcm63138";
+			resets = <&pmb0 4 1>;
+		};
+	};
+
+	bootlut: bootlut@8000 {
+		compatible = "brcm,bcm63138-bootlut";
+		reg = <0x8000 0x50>;
+	};
+
+=======
+reboot
+------
+Two nodes are required for software reboot: a timer node and a syscon-reboot node.
+
+Timer node:
+
+- compatible: Must be "brcm,bcm6328-timer", "syscon"
+- reg: Register base address and length
+
+Syscon reboot node:
+
+See Documentation/devicetree/bindings/power/reset/syscon-reboot.txt for the
+detailed list of properties, the two values defined below are specific to the
+BCM6328-style timer:
+
+- offset: Should be 0x34 to denote the offset of the TIMER_WD_TIMER_RESET register
+  from the beginning of the TIMER block
+- mask: Should be 1 for the SoftRst bit.
+
+Example:
+
+	timer: timer@80 {
+		compatible = "brcm,bcm6328-timer", "syscon";
+		reg = <0x80 0x3c>;
+	};
+
+	reboot {
+		compatible = "syscon-reboot";
+		regmap = <&timer>;
+		offset = <0x34>;
+		mask = <0x1>;
+	};
diff --git a/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt b/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt
index 430608ec0..0d0c1ae81 100644
--- a/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt
+++ b/kernel/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/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,nsp.txt b/kernel/Documentation/devicetree/bindings/arm/bcm/brcm,nsp.txt
new file mode 100644
index 000000000..eae53e455
--- /dev/null
+++ b/kernel/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";
diff --git a/kernel/Documentation/devicetree/bindings/arm/bcm/ns2.txt b/kernel/Documentation/devicetree/bindings/arm/bcm/ns2.txt
new file mode 100644
index 000000000..35f056f4a
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/arm/bcm/ns2.txt
@@ -0,0 +1,9 @@
+Broadcom North Star 2 (NS2) device tree bindings
+------------------------------------------------
+
+Boards with NS2 shall have the following properties:
+
+Required root node property:
+
+NS2 SVK board
+compatible = "brcm,ns2-svk", "brcm,ns2";
diff --git a/kernel/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.txt b/kernel/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.txt
new file mode 100644
index 000000000..6824b3180
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.txt
@@ -0,0 +1,14 @@
+Raspberry Pi VideoCore firmware driver
+
+Required properties:
+
+- compatible:		Should be "raspberrypi,bcm2835-firmware"
+- mboxes:		Phandle to the firmware device's Mailbox.
+			  (See: ../mailbox/mailbox.txt for more information)
+
+Example:
+
+firmware {
+	compatible = "raspberrypi,bcm2835-firmware";
+	mboxes = <&mailbox>;
+};