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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-02 19:49:50 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-02 19:49:50 -0700 |
commit | d4509e5a6edf8862c18d887a642ce4994bde297d (patch) | |
tree | 51669f2e0fa6004fb02c5907c2957a48d025c2a1 /Documentation | |
parent | 0afa80ab6ff9aac57f118463699cee306ad6ed8a (diff) | |
parent | ed01f64b831481762437c8eedddcca8481dc7f67 (diff) | |
download | kernel_samsung_aries-d4509e5a6edf8862c18d887a642ce4994bde297d.zip kernel_samsung_aries-d4509e5a6edf8862c18d887a642ce4994bde297d.tar.gz kernel_samsung_aries-d4509e5a6edf8862c18d887a642ce4994bde297d.tar.bz2 |
Merge branch 'merge' of git://git.secretlab.ca/git/linux-2.6
* 'merge' of git://git.secretlab.ca/git/linux-2.6:
powerpc/5200: in lpbfifo, flag DMA irqs as enabled after requesting them
powerpc/fsl: add device tree binding for QE firmware
of/flattree: Fix unhandled OF_DT_NOP tag when unflattening the device tree
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt | 54 |
1 files changed, 54 insertions, 0 deletions
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>; + ... + }; |