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Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0221-BCM270X_DT-Add-new-Ethernet-DT-parameters.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0221-BCM270X_DT-Add-new-Ethernet-DT-parameters.patch55
1 files changed, 55 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0221-BCM270X_DT-Add-new-Ethernet-DT-parameters.patch b/target/linux/brcm2708/patches-4.19/950-0221-BCM270X_DT-Add-new-Ethernet-DT-parameters.patch
new file mode 100644
index 0000000000..4b40e2f4d9
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0221-BCM270X_DT-Add-new-Ethernet-DT-parameters.patch
@@ -0,0 +1,55 @@
+From 64c215470c985bd740e378cc3cd6963e15f0a927 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 27 Nov 2018 16:56:50 +0000
+Subject: [PATCH 221/703] 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
+@@ -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";
+ };
+ };
+--- 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")
+