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authorDavid Woodhouse <David.Woodhouse@intel.com>2010-05-10 14:32:46 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2010-05-10 14:32:46 +0100
commit0ae28a35bcb7984838acbf28bfba9c030f8b74f0 (patch)
tree4f449d929b5df9e126e839f388ff0fd2b52028a0 /Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt
parent6f1f3d0ab5c3eeea9f04486481c25e9afdfa26c5 (diff)
parentb57f95a38233a2e73b679bea4a5453a1cc2a1cc9 (diff)
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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: drivers/mtd/mtdcore.c Pull in the bdi fixes and ARM platform changes that other outstanding patches depend on.
Diffstat (limited to 'Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt')
-rw-r--r--Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt54
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diff --git a/Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt b/Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt
index 6e37be1..4f89302 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>;
+ ...
+ };