diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2017-12-14 13:27:42 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-15 21:23:22 +0300 |
| commit | 512dc8fed99a361e6caf185b14292ab0a60ebd2f (patch) | |
| tree | 606d1b5caaa00f910fcbe3df3e6ca791c90742d4 /Documentation | |
| parent | b4cf6a0a23bcf847def38f8e5220030b36dfabcf (diff) | |
| download | linux-512dc8fed99a361e6caf185b14292ab0a60ebd2f.tar.xz | |
dt-bindings: add sff,sff binding for SFP support
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/net/sff,sfp.txt | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/net/sff,sfp.txt b/Documentation/devicetree/bindings/net/sff,sfp.txt index 60e970ce10ee..f1c441bedf68 100644 --- a/Documentation/devicetree/bindings/net/sff,sfp.txt +++ b/Documentation/devicetree/bindings/net/sff,sfp.txt @@ -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 |