MDIO and MDC doesn't work

KevinFFF · November 16, 2023, 3:31am

[ 1382.190712] mv88e6085 2310000.ethernet:02: probing switch. n=1
[ 1382.190892] mv88e6085 2310000.ethernet:02: <- addr: 0x10 reg: 0x03 val: 0x0000

It seems you could not read register and detect Marvell 88E6352 with R35.4.1.

Could you share the result of following command on both R35.1(work) and R35.4.1(failed)?

$ sudo cat /sys/kernel/debug/gpio|grep PG.05
$ cat /proc/device-tree/ethernet@2310000/nvidia,phy-reset-gpio

Seven0:

		soc_gpio18_pg5 {
			nvidia,pins = "soc_gpio18_pg5";
			nvidia,function = "rsvd0";
			nvidia,pull = <TEGRA_PIN_PULL_NONE>;
			nvidia,tristate = <TEGRA_PIN_DISABLE>;
			nvidia,enable-input = <TEGRA_PIN_DISABLE>;
			nvidia,lpdr = <TEGRA_PIN_DISABLE>;
		};

It seems you didn’t configure the pull for PG.05.
Could you share the pinmux spreadsheet for your configuration for PG.05 (ENET_RST_N)?

Seven0 · November 16, 2023, 3:56am

Thank you reply,I did not use pinmux spreadsheet,I modify this file directly and then refresh orin

Linux_for_Tegra/bootloader/t186ref/BCT/tegra234-mb1-bct-pinmux-p3701-0000-a04.dtsi

R35.4.1
titan@titan:~/Desktop$ sudo cat /sys/kernel/debug/gpio|grep PG.05
[sudo] password for titan:
gpio-388 (PG.05 |phy_reset ) out lo
titan@titan:~/Desktop$ cat /proc/device-tree/ethernet@2310000/nvidia,phy-reset-gpio
5

R35.1
titan@titan1:~/Desktop$ sudo cat /sys/kernel/debug/gpio |grep PG.05
[sudo] password for titan:
gpio-388 (PG.05 |phy_reset ) out hi
titan@titan1:~/Desktop$ cat /proc/device-tree/ethernet@2310000/nvidia,phy-reset-gpio
5

Seven0 · November 16, 2023, 3:58am

This my Linux_for_Tegra/bootloader/t186ref/BCT/tegra234-mb1-bct-pinmux-p3701-0000-a04.dtsi

tegra234-mb1-bct-pinmux-p3701-0000-a04.txt (63.6 KB)

WayneWWW · November 16, 2023, 3:59am

If you don’t set reset-gpio in device tree but control it with sysfs instead, will the driver starts to work?

Seven0 · November 16, 2023, 11:35am

Using sysfs to control reset-goio is still the same as it is now, the driver is not working.

Seven0 · November 16, 2023, 11:54am

After a manual reset using sysfs，I manually loaded the nvethernet.ko driver,but eth0 still unavailable
titan@titan:~/Desktop$ ifconfig
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1000 (Local Loopback)
RX packets 1523 bytes 106016 (106.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1523 bytes 106016 (106.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

rndis0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether c2:d8:6b:4a:7d:49 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

usb0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.43.100 netmask 255.255.255.0 broadcast 192.168.43.255
inet6 fe80::b5ea:f62d:a9ce:ffaf prefixlen 64 scopeid 0x20
ether ae:0c:29:a3:9b:6d txqueuelen 1000 (Ethernet)
RX packets 60 bytes 2678 (2.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 539 bytes 42054 (42.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

usb1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether c2:d8:6b:4a:7d:4b txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

titan@titan:~/Desktop$ ifconfig -a
dummy0: flags=130<BROADCAST,NOARP> mtu 1500
ether 22:1c:0d:6d:7c:3c txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

eth0: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether 48:b0:2d:95:10:31 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

l4tbr0: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether c2:d8:6b:4a:7d:49 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1000 (Local Loopback)
RX packets 1607 bytes 111894 (111.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1607 bytes 111894 (111.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

rndis0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether c2:d8:6b:4a:7d:49 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

usb0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.43.100 netmask 255.255.255.0 broadcast 192.168.43.255
inet6 fe80::b5ea:f62d:a9ce:ffaf prefixlen 64 scopeid 0x20
ether ae:0c:29:a3:9b:6d txqueuelen 1000 (Ethernet)
RX packets 62 bytes 2734 (2.7 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 564 bytes 43991 (43.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

usb1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether c2:d8:6b:4a:7d:4b txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

this is load the driver log
[ 527.149990] nvethernet 2310000.ethernet: Adding to iommu group 58
[ 527.150341] nvethernet 2310000.ethernet: failed to read skip mac reset flag, default 0
[ 527.150345] nvethernet 2310000.ethernet: failed to read MDIO address
[ 527.150351] nvethernet 2310000.ethernet: setting to default DMA bit mask
[ 527.150369] nvethernet 2310000.ethernet: missing nvidia,pad_auto_cal_pu_offset, setting default 0
[ 527.150372] nvethernet 2310000.ethernet: missing nvidia,pad_auto_cal_pd_offset, setting default 0
[ 527.150506] nvethernet 2310000.ethernet: failed to get phy reset gpio error: -2
[ 527.155597] nvethernet 2310000.ethernet: Ethernet MAC address: 48:b0:2d:95:10:31
[ 527.157046] -->macsec_probe()
[ 527.157078] nvethernet 2310000.ethernet: macsec param in DT is missing or disabled
[ 527.157083] <–macsec_probe()
[ 527.157086] nvethernet 2310000.ethernet: Macsec not supported/Not enabled in DT
[ 527.158546] nvethernet 2310000.ethernet: eth0 (HW ver: 53) created with 8 DMA channels
[ 527.193123] nvethernet 2310000.ethernet: failed to connect PHY
[ 527.199309] net eth0: ether_open: Cannot attach to PHY (error: -19)
s

KevinFFF · November 20, 2023, 8:27am

Is this from JP5.1.2(failed) or JP5.0.2(working)?

Could you use pinmux spreadsheet to configure this pin as following?