3 files changed, 61 insertions, 2 deletions

diff --git a/Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt b/Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt
index 6e37be1eeb2d..4f8930263dd9 100644
--- a/Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt
+++ b/Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt
@@ -21,6 +21,15 @@ Required properties:
 - fsl,qe-num-snums: define how many serial number(SNUM) the QE can use for the
   threads.
 
+Optional properties:
+- fsl,firmware-phandle:
+    Usage: required only if there is no fsl,qe-firmware child node
+    Value type: <phandle>
+    Definition: Points to a firmware node (see "QE Firmware Node" below)
+        that contains the firmware that should be uploaded for this QE.
+        The compatible property for the firmware node should say,
+        "fsl,qe-firmware".
+
 Recommended properties
 - brg-frequency : the internal clock source frequency for baud-rate
   generators in Hz.
@@ -59,3 +68,48 @@ Example:
                 reg = <0 c000>;
         };
      };
+
+* QE Firmware Node
+
+This node defines a firmware binary that is embedded in the device tree, for
+the purpose of passing the firmware from bootloader to the kernel, or from
+the hypervisor to the guest.
+
+The firmware node itself contains the firmware binary contents, a compatible
+property, and any firmware-specific properties.  The node should be placed
+inside a QE node that needs it.  Doing so eliminates the need for a
+fsl,firmware-phandle property.  Other QE nodes that need the same firmware
+should define an fsl,firmware-phandle property that points to the firmware node
+in the first QE node.
+
+The fsl,firmware property can be specified in the DTS (possibly using incbin)
+or can be inserted by the boot loader at boot time.
+
+Required properties:
+  - compatible
+      Usage: required
+      Value type: <string>
+      Definition: A standard property.  Specify a string that indicates what
+          kind of firmware it is.  For QE, this should be "fsl,qe-firmware".
+
+   - fsl,firmware
+      Usage: required
+      Value type: <prop-encoded-array>, encoded as an array of bytes
+      Definition: A standard property.  This property contains the firmware
+          binary "blob".
+
+Example:
+        qe1@e0080000 {
+                compatible = "fsl,qe";
+                qe_firmware:qe-firmware {
+                        compatible = "fsl,qe-firmware";
+                        fsl,firmware = [0x70 0xcd 0x00 0x00 0x01 0x46 0x45 ...];
+                };
+                ...
+        };
+
+        qe2@e0090000 {
+                compatible = "fsl,qe";
+                fsl,firmware-phandle = <&qe_firmware>;
+                ...
+        };
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c
index 929d017535a3..d4f8be307cd5 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c
@@ -481,6 +481,8 @@ mpc52xx_lpbfifo_probe(struct of_device *op, const struct of_device_id *match)
         if (rc)
                 goto err_bcom_rx_irq;
 
+        lpbfifo.dma_irqs_enabled = 1;
+
         /* Request the Bestcomm transmit (memory --> fifo) task and IRQ */
         lpbfifo.bcom_tx_task =
                 bcom_gen_bd_tx_init(2, res.start + LPBFIFO_REG_FIFO_DATA,
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 406757a9d7ea..dee4fb56b094 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -376,8 +376,11 @@ unsigned long __init unflatten_dt_node(unsigned long mem,
                 if (!np->type)
                         np->type = "<NULL>";
         }
-        while (tag == OF_DT_BEGIN_NODE) {
-                mem = unflatten_dt_node(mem, p, np, allnextpp, fpsize);
+        while (tag == OF_DT_BEGIN_NODE || tag == OF_DT_NOP) {
+                if (tag == OF_DT_NOP)
+                        *p += 4;
+                else
+                        mem = unflatten_dt_node(mem, p, np, allnextpp, fpsize);
                 tag = be32_to_cpup((__be32 *)(*p));
         }
         if (tag != OF_DT_END_NODE) {