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dt-bindings: add sff,sff binding for SFP support

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Add "sff,sff" for SFF module support with SFP.  These have a different
phys_id value, and also have the present and rate select signals omitted
compared with their socketed counter-parts.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2017-12-14 10:27:42 +00:00 committed by David S. Miller
parent b4cf6a0a23
commit 512dc8fed9
1 changed files with 7 additions and 3 deletions
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10
Documentation/devicetree/bindings/net/sff,sfp.txt
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@ -3,7 +3,9 @@ Transceiver
Required properties:
- compatible : must be "sff,sfp"
- compatible : must be one of
"sff,sfp" for SFP modules
"sff,sff" for soldered down SFF modules
Optional Properties:
@ -11,7 +13,8 @@ Optional Properties:
interface
- mod-def0-gpios : GPIO phandle and a specifier of the MOD-DEF0 (AKA Mod_ABS)
module presence input gpio signal, active (module absent) high
module presence input gpio signal, active (module absent) high. Must
not be present for SFF modules
- los-gpios : GPIO phandle and a specifier of the Receiver Loss of Signal
Indication input gpio signal, active (signal lost) high
@ -24,10 +27,11 @@ Optional Properties:
- rate-select0-gpios : GPIO phandle and a specifier of the Rx Signaling Rate
Select (AKA RS0) output gpio signal, low: low Rx rate, high: high Rx rate
Must not be present for SFF modules
- rate-select1-gpios : GPIO phandle and a specifier of the Tx Signaling Rate
Select (AKA RS1) output gpio signal (SFP+ only), low: low Tx rate, high:
high Tx rate
high Tx rate. Must not be present for SFF modules
Example #1: Direct serdes to SFP connection