Andrew
On 5/20/20 10:36 AM, Andrew Lunn wrote:
Hi Dan
Having it required with PHY_INTERFACE_MODE_RGMII_ID or
PHY_INTERFACE_MODE_RGMII_RXID is pretty unusual. Normally these
properties are used to fine tune the delay, if the default of 2ns does
not work.
Also if the MAC phy-mode is configured with RGMII-ID and no internal delay
values defined wouldn't that be counter intuitive?
Most PHYs don't allow the delay to be fine tuned. You just pass for
example PHY_INTERFACE_MODE_RGMII_ID to the PHY driver and it enables a
2ns delay. That is what people expect, and is documented.
Being able to tune the delay is an optional extra, which some PHYs
support, but that is always above and beyond
PHY_INTERFACE_MODE_RGMII_ID.
I am interested in knowing where that is documented. I want to RTM I
grepped for a few different words but came up empty
Since this is a tuneable phy we need to program the ID. 2ns is the
default value
Maybe I can change it from Required to Configurable or Used.
Dan
Andrew
