On 8/30/2017 2:11 PM, Baruch Siach wrote:

On Wed, Aug 30, 2017 at 02:04:11PM +0300, Sergei Shtylyov wrote:
On 8/30/2017 12:51 PM, Baruch Siach wrote:

Add device-tree binding documentation SFP transceivers. Support for SFP
transceivers has been recently introduced (drivers/net/phy/sfp.c).

Signed-off-by: Baruch Siach <bar...@tkos.co.il>
---
v2:
    Rename -gpio properties to -gpios
    Rename the rate-select-gpio property to rate-select0-gpios
    Add the rate-select1-gpios property
    Add examples
---
   Documentation/devicetree/bindings/net/sff,sfp.txt | 74 
+++++++++++++++++++++++
   1 file changed, 74 insertions(+)
   create mode 100644 Documentation/devicetree/bindings/net/sff,sfp.txt

diff --git a/Documentation/devicetree/bindings/net/sff,sfp.txt 
b/Documentation/devicetree/bindings/net/sff,sfp.txt
new file mode 100644
index 000000000000..1d9c786d6287
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/sff,sfp.txt
@@ -0,0 +1,74 @@
+Small Form Factor (SFF) Committee Small Form-factor Pluggable (SFP)
+Transceiver
+
+Required properties:
+
+- compatible : must be "sff,sfp"
+
+Optional Properties:
+
+- i2c-bus : phandle of an I2C bus controller for the SFP two wire serial
+  interface
+
+- moddef0-gpios : phandle of the MOD-DEF0 (AKA Mod_ABS) module presence input
+  gpio signal

    Your example shows there's GPIO phandle *and* specifier.

Would "GPIO specifier" be enough here?

   No, specifier is the cells following GPIO (or any other) phandle.

[...]

MBR, Sergei

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