You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
2.4 KiB
56 lines
2.4 KiB
6 years ago
|
From d4539512edd83737f51377e3e87512040133628a Mon Sep 17 00:00:00 2001
|
||
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
||
|
|
Date: Tue, 27 Nov 2018 16:56:50 +0000
|
||
|
|
Subject: [PATCH 445/454] BCM270X_DT: Add new Ethernet DT parameters
|
||
|
|
|
||
|
|
Add "eth_downshift_after" DT parameter to allow the delay before the
|
||
|
|
downshift to be specified. The default is 2 auto-negotiation cycles,
|
||
|
|
and legal values are 2, 3, 4, 5 and 0 (disabled).
|
||
|
|
|
||
|
|
Add "eth_max_speed" DT parameter as a way of prohibiting 1000Mbps
|
||
|
|
links. This can be used to avoid the delay until the downshift mechanism
|
||
|
|
activates. Legal values are 10, 100 and 1000, where the default is
|
||
|
|
unlimited (effectively 1000Mbps).
|
||
|
|
|
||
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
||
|
|
---
|
||
|
|
arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi | 2 ++
|
||
|
|
arch/arm/boot/dts/overlays/README | 9 +++++++++
|
||
|
|
2 files changed, 11 insertions(+)
|
||
|
|
|
||
|
|
--- a/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
|
||
|
|
+++ b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
|
||
|
|
@@ -48,5 +48,7 @@
|
||
|
|
tx_lpi_timer = <ðernet>,"microchip,tx-lpi-timer:0";
|
||
|
|
eth_led0 = <ðernet>,"microchip,led-modes:0";
|
||
|
|
eth_led1 = <ðernet>,"microchip,led-modes:4";
|
||
|
|
+ eth_downshift_after = <ð_phy>,"microchip,downshift-after:0";
|
||
|
|
+ eth_max_speed = <ð_phy>,"max-speed:0";
|
||
|
|
};
|
||
|
|
};
|
||
|
|
--- a/arch/arm/boot/dts/overlays/README
|
||
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
||
|
|
@@ -98,6 +98,11 @@ Params:
|
||
|
|
compatible devices (default "on"). See also
|
||
|
|
"tx_lpi_timer".
|
||
|
|
|
||
|
|
+ eth_downshift_after Set the number of auto-negotiation failures
|
||
|
|
+ after which the 1000Mbps modes are disabled.
|
||
|
|
+ Legal values are 2, 3, 4, 5 and 0, where
|
||
|
|
+ 0 means never downshift (default 2).
|
||
|
|
+
|
||
|
|
eth_led0 Set mode of LED0 (usually orange) (default
|
||
|
|
"1"). The legal values are:
|
||
|
|
0=link/activity 1=link1000/activity
|
||
|
|
@@ -108,6 +113,10 @@ Params:
|
||
|
|
eth_led1 Set mode of LED1 (usually green) (default
|
||
|
|
"6"). See eth_led0 for legal values.
|
||
|
|
|
||
|
|
+ eth_max_speed Set the maximum speed a link is allowed
|
||
|
|
+ to negotiate. Legal values are 10, 100 and
|
||
|
|
+ 1000 (default 1000).
|
||
|
|
+
|
||
|
|
i2c_arm Set to "on" to enable the ARM's i2c interface
|
||
|
|
(default "off")
|
||
|
|
|