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author | Zhao Qiang <qiang.zhao@nxp.com> | 2016-05-17 10:38:58 +0800 |
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committer | Scott Wood <oss@buserror.net> | 2016-07-09 01:12:04 -0500 |
commit | 44a0554c1b8c5e4a6cd4cf776e1bbc9093c899ca (patch) | |
tree | 558242976cdbbacc3f9fc1a93e8cfdbac56a4240 /Documentation/devicetree/bindings/powerpc | |
parent | f0590990ba6db16d5ca8af41a3ad9d3cd8567844 (diff) | |
download | blackbird-obmc-linux-44a0554c1b8c5e4a6cd4cf776e1bbc9093c899ca.tar.gz blackbird-obmc-linux-44a0554c1b8c5e4a6cd4cf776e1bbc9093c899ca.zip |
QE: Add ucc hdlc document to bindings
Add ucc hdlc document to
Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/network.txt
Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Scott Wood <oss@buserror.net>
Diffstat (limited to 'Documentation/devicetree/bindings/powerpc')
-rw-r--r-- | Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/network.txt | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/network.txt b/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/network.txt index 29b28b8f9a89..03c741602c6d 100644 --- a/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/network.txt +++ b/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/network.txt @@ -41,3 +41,84 @@ Example: fsl,mdio-pin = <12>; fsl,mdc-pin = <13>; }; + +* HDLC + +Currently defined compatibles: +- fsl,ucc-hdlc + +Properties for fsl,ucc-hdlc: +- rx-clock-name +- tx-clock-name + Usage: required + Value type: <string> + Definition : Must be "brg1"-"brg16" for internal clock source, + Must be "clk1"-"clk24" for external clock source. + +- fsl,tdm-interface + Usage: optional + Value type: <empty> + Definition : Specify that hdlc is based on tdm-interface + +The property below is dependent on fsl,tdm-interface: +- fsl,rx-sync-clock + Usage: required + Value type: <string> + Definition : Must be "none", "rsync_pin", "brg9-11" and "brg13-15". + +- fsl,tx-sync-clock + Usage: required + Value type: <string> + Definition : Must be "none", "tsync_pin", "brg9-11" and "brg13-15". + +- fsl,tdm-framer-type + Usage: required for tdm interface + Value type: <string> + Definition : "e1" or "t1".Now e1 and t1 are used, other framer types + are not supported. + +- fsl,tdm-id + Usage: required for tdm interface + Value type: <u32> + Definition : number of TDM ID + +- fsl,tx-timeslot-mask +- fsl,rx-timeslot-mask + Usage: required for tdm interface + Value type: <u32> + Definition : time slot mask for TDM operation. Indicates which time + slots used for transmitting and receiving. + +- fsl,siram-entry-id + Usage: required for tdm interface + Value type: <u32> + Definition : Must be 0,2,4...64. the number of TDM entry. + +- fsl,tdm-internal-loopback + usage: optional for tdm interface + value type: <empty> + Definition : Internal loopback connecting on TDM layer. + +Example for tdm interface: + + ucc@2000 { + compatible = "fsl,ucc-hdlc"; + rx-clock-name = "clk8"; + tx-clock-name = "clk9"; + fsl,rx-sync-clock = "rsync_pin"; + fsl,tx-sync-clock = "tsync_pin"; + fsl,tx-timeslot-mask = <0xfffffffe>; + fsl,rx-timeslot-mask = <0xfffffffe>; + fsl,tdm-framer-type = "e1"; + fsl,tdm-id = <0>; + fsl,siram-entry-id = <0>; + fsl,tdm-interface; + }; + +Example for hdlc without tdm interface: + + ucc@2000 { + compatible = "fsl,ucc-hdlc"; + rx-clock-name = "brg1"; + tx-clock-name = "brg1"; + }; |