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imx6/linux: limit ethernet speed to 100mbits which works reliable [backport of #1617]

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to enable gigabit speed module parameter via kernel command line
must be set in form fec.disable_giga=0
This commit is contained in:
Peter Vicman 2017-05-10 18:31:29 +02:00
parent d7ff410795
commit be49525470
5 changed files with 126 additions and 5 deletions
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5
projects/imx6/bootloader/uEnv-matrix.txt
View File

@ -11,7 +11,10 @@ console_arg=quiet morequiet
# enable debugging (kodi debug)
#debugging_arg=debugging
# enable gigabit speed instead of 100mbit
#enable_giga_arg=fec.disable_giga=0
zImage=/KERNEL
bootfile=/KERNEL
mmcargs=setenv bootargs "boot=/dev/mmcblk0p1 disk=/dev/mmcblk0p2 ${ssh_arg} ${console_arg} ${debugging_arg} video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 dmfc=3 consoleblank=0"
mmcargs=setenv bootargs "boot=/dev/mmcblk0p1 disk=/dev/mmcblk0p2 ${ssh_arg} ${console_arg} ${debugging_arg} ${enable_giga_arg} video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 dmfc=3 consoleblank=0"
uenvcmd=if test -n $ethaddr; then true; else setenv ethaddr 1E:ED:19:27:1A:B2; fi

8
projects/imx6/bootloader/uEnv-udoo.txt
View File

@ -1,5 +1,4 @@
# enable only one video section
# enable only one video output
# HDMI
video=mxcfb0:dev=hdmi,1920x1080M@60,bpp=32
@ -27,6 +26,9 @@ console_arg=quiet morequiet
# enable debugging (kodi debug)
#debugging_arg=debugging
# enable gigabit speed instead of 100mbit
#enable_giga_arg=fec.disable_giga=0
zImage=/KERNEL
bootfile=/KERNEL
mmcargs=setenv bootargs boot=/dev/mmcblk0p1 disk=/dev/mmcblk0p2 ${ssh_arg} ${console_arg} ${debugging_arg} video=${video} dmfc=3 consoleblank=0
mmcargs=setenv bootargs boot=/dev/mmcblk0p1 disk=/dev/mmcblk0p2 ${ssh_arg} ${console_arg} ${debugging_arg} ${enable_giga_arg} video=${video} dmfc=3 consoleblank=0

8
projects/imx6/bootloader/uEnv.txt
View File

@ -11,6 +11,12 @@ console_arg=quiet morequiet
# enable debugging (kodi debug)
#debugging_arg=debugging
# overwrite dtb file
#fdt_file=imx6q-cubox-i.dtb
# enable gigabit speed instead of 100mbit
#enable_giga_arg=fec.disable_giga=0
zImage=/KERNEL
bootfile=/KERNEL
mmcargs=setenv bootargs "boot=/dev/mmcblk0p1 disk=/dev/mmcblk0p2 ${ssh_arg} ${console_arg} ${debugging_arg} video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 dmfc=3 consoleblank=0"
mmcargs=setenv bootargs "boot=/dev/mmcblk0p1 disk=/dev/mmcblk0p2 ${ssh_arg} ${console_arg} ${debugging_arg} ${enable_giga_arg} video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 dmfc=3 consoleblank=0"

55
projects/imx6/patches/linux/3.14-sr/linux-410-limit-eth-speed-100mbits.patch Normal file
View File

@ -0,0 +1,55 @@
From a868ebd7d7e9ee8dc97b41ac89e5fa8d8cfc65d7 Mon Sep 17 00:00:00 2001
From: Peter Vicman <peter.vicman@gmail.com>
Date: Wed, 9 May 2017 20:18:07 +0200
Subject: [PATCH] limit eth speed 100mbits
default ethernet speed is set to 100mbits which works reliable
to enable gigabit speed module parameter via kernel command line
must be set in form fec.disable_giga=0
based on https://github.com/boundarydevices/linux-imx6/commit/aef0deef3c95aa0daf4fa5d082cca4ed2057c65f
---
drivers/net/ethernet/freescale/fec_main.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 716fcb1..af01828 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -140,6 +140,10 @@ static unsigned char macaddr[ETH_ALEN];
module_param_array(macaddr, byte, NULL, 0);
MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
+static int disable_giga = 1;
+module_param(disable_giga, int, 0644);
+MODULE_PARM_DESC(disable_giga, "disable gigabit speeds");
+
#if defined(CONFIG_M5272)
/*
* Some hardware gets it MAC address out of local flash memory.
@@ -1948,15 +1952,18 @@ static int fec_enet_mii_probe(struct net
}
/* mask with MAC supported features */
- if (fep->quirks & FEC_QUIRK_HAS_GBIT) {
+ if (!disable_giga && (fep->quirks & FEC_QUIRK_HAS_GBIT)) {
+ netdev_info(ndev, "set 1000mbps\n");
phy_dev->supported &= PHY_GBIT_FEATURES;
phy_dev->supported &= ~SUPPORTED_1000baseT_Half;
#if !defined(CONFIG_M5272)
phy_dev->supported |= SUPPORTED_Pause;
#endif
}
- else
+ else {
+ netdev_info(ndev, "set 100mbps\n");
phy_dev->supported &= PHY_BASIC_FEATURES;
+ }
phy_dev->advertising = phy_dev->supported;
--
2.7.4

55
projects/imx6/patches/linux/4.4-xbian/linux-410-limit-eth-speed-100mbits.patch Normal file
View File

@ -0,0 +1,55 @@
From a868ebd7d7e9ee8dc97b41ac89e5fa8d8cfc65d7 Mon Sep 17 00:00:00 2001
From: Peter Vicman <peter.vicman@gmail.com>
Date: Wed, 9 May 2017 20:18:07 +0200
Subject: [PATCH] limit eth speed 100mbits
default ethernet speed is set to 100mbits which works reliable
to enable gigabit speed module parameter via kernel command line
must be set in form fec.disable_giga=0
based on https://github.com/boundarydevices/linux-imx6/commit/aef0deef3c95aa0daf4fa5d082cca4ed2057c65f
---
drivers/net/ethernet/freescale/fec_main.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 716fcb1..af01828 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -142,6 +142,10 @@ static unsigned char macaddr[ETH_ALEN];
module_param_array(macaddr, byte, NULL, 0);
MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
+static int disable_giga = 1;
+module_param(disable_giga, int, 0644);
+MODULE_PARM_DESC(disable_giga, "disable gigabit speeds");
+
#if defined(CONFIG_M5272)
/*
* Some hardware gets it MAC address out of local flash memory.
@@ -1973,15 +1977,18 @@ static int fec_enet_mii_probe(struct net
}
/* mask with MAC supported features */
- if (fep->quirks & FEC_QUIRK_HAS_GBIT) {
+ if (!disable_giga && (fep->quirks & FEC_QUIRK_HAS_GBIT)) {
+ netdev_info(ndev, "set 1000mbps\n");
phy_dev->supported &= PHY_GBIT_FEATURES;
phy_dev->supported &= ~SUPPORTED_1000baseT_Half;
#if !defined(CONFIG_M5272)
phy_dev->supported |= SUPPORTED_Pause;
#endif
}
- else
+ else {
+ netdev_info(ndev, "set 100mbps\n");
phy_dev->supported &= PHY_BASIC_FEATURES;
+ }
phy_dev->advertising = phy_dev->supported;
--
2.7.4