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openmptcprouter/root/target/linux/brcm2708/patches-4.19/0221-BCM270X_DT-Add-new-Ethernet-DT-parameters.patch
2019-04-22 17:10:09 +02:00

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From 874089065fe30eb0192cee7555d835058ab7529a Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 27 Nov 2018 16:56:50 +0000
Subject: [PATCH 221/432] 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(+)
diff --git a/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
index 69d2c2757e45..78742d623b6c 100644
--- a/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
+++ b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
@@ -50,5 +50,7 @@
tx_lpi_timer = <&eth_phy>,"microchip,tx-lpi-timer:0";
eth_led0 = <&eth_phy>,"microchip,led-modes:0";
eth_led1 = <&eth_phy>,"microchip,led-modes:4";
+ eth_downshift_after = <&eth_phy>,"microchip,downshift-after";
+ eth_max_speed = <&eth_phy>,"max-speed:0";
};
};
diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
index fb6d0ddbbc76..1e89b61a4906 100644
--- 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")
--
2.19.1