RGMII doesn't work with ksz9031

[_YonMeen]

Hi,
I used micrel,ksz9031 for RGMII.and set the pinmux and GPIOs dtsi.
And set the dts file tegra234-ethernet-3737-0000.dtsi as follow.
tegra234-mb1-bct-pinmux-p3701-0000-a04.dtsi (64.6 KB)
tegra234-mb1-bct-gpio-p3701-0000-a04.dtsi (3.9 KB)
tegra234-ethernet-3737-0000.dtsi (1.4 KB)

After flashed the custom board,there were some error:

[ 11.752779] nvethernet 2310000.ethernet: Adding to iommu group 51
[ 11.759175] nvethernet 2310000.ethernet: failed to read skip mac reset flag, default 0
[ 11.767366] nvethernet 2310000.ethernet: failed to read MDIO address
[ 11.773911] nvethernet 2310000.ethernet: Failed to read nvida,pause_frames, so setting to defaulte
[ 11.784756] nvethernet 2310000.ethernet: setting to default DMA bit mask
[ 11.791681] nvethernet 2310000.ethernet: max-platform-mtu DT entry missing, setting default 1500
[ 11.811213] nvethernet 2310000.ethernet: Ethernet MAC address: 48:b0:2d:94:96:ab
[ 11.819231] nvethernet 2310000.ethernet: Macsec not enabled
[ 11.824970] nvethernet 2310000.ethernet: Macsec: Reduced MTU: 1466 Max: 1500
[ 11.833442] nvethernet 2310000.ethernet: eth0 (HW ver: 53) created with 8 DMA channels
…
[ 104.494257] nvethernet 2310000.ethernet: failed to connect PHY
[ 104.500401] net eth0: ether_open: Cannot attach to PHY (error: -19)
…

I can see the eth0 use cmd “ip addr”:

host@1:~$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 4a:99:1a:53:61:be brd ff:ff:ff:ff:ff:ff
3: eth0: <BROADCAST,MULTICAST> mtu 1466 qdisc noop state DOWN group default qlen 1000
link/ether 48:b0:2d:94:96:ab brd ff:ff:ff:ff:ff:ff

But when I link it up,there were some errors:

host@1:~$ sudo ip link set eth0 up
[sudo] password for host:
[ 456.207357] nvethernet 2310000.ethernet: failed to connect PHY
[ 456.213407] net eth0: ether_open: Cannot attach to PHY (error: -19)
RTNETLINK answers: No such device

So,what’s the problem ? I really don’t known how to fixed it now,could you help me?
Thanks!

[WayneWWW]

please refer to

PHY KSZ9031 not working with Jetpack 5.0.2

Dear NVidia Team In the topic JetPack 5.0 DP - Ethernet Port "RGMII" not working with KSZ9031 we already mentioned that our PHY KSZ9031 does not work anymore with the new JetPack Version. With JetPack 4.6 and older, we did not see any problems. Now we started testing with the release JetPack 5.0.2 and face again the same problem. Do we need to change something in our configuration? Here is our device tree: out.dts (263.7 KB) And here the dmesg output: dmesg.txt (107.3 KB) We specificall…

[_YonMeen]

Thanks！
I tried it. And it can work now.
I refer to

Problem about replacing PHY of Xavier with a Switch

Hi,we are replacing the PHY(Marvell 88E1512) of Xavier with a Switch(Marvell 88E6352),and the switch connect with Xavier through RGMII and SMI(MDC/MDIO) interface . But RGMII communication is not successful,the Switch can only be detected a few times(about 1/10) through SMI interface ,and The PHYs of the Switch can communication with each other. Kernel configuration: CONFIG_NET_DSA=y CONFIG_NET_DSA_MV88E6XXX=y CONFIG_NET_DSA_MV88E6XXX_GLOBAL2=y then compiling and flashing…I can find the mv…

and

RGMII Ethernet changes not applying changes in dts( converted from dtb) file

Hi team , I am modifying “tegra234-p3711-ethernet.dtsi” file for RGMI interface as below code snippet for phy address 7 and with micrel,ksz9031. After building this changes are not appearing in "tegra234-p3701-0004-p3737-0000.dts( converted from tegra234-p3701-0004-p3737-0000.dtb) attached this file. I need to modify any other file ? any standard steps ? ( made sure GPIO pinmux for RGMII configured properly). tegra234-p3701-0004-p3737-0000.dts (487.8 KB) tegra234-p3711-ethernet.dtsi (1…

and

PHY KSZ9031 not working with Jetpack 5.0.2

We added the following lines without success: /* 1:10G, 0:5G / nvidia,uphy-gbe-mode = <1>; / 0:XFI 10G, 1:XFI 5G, 2:USXGMII 10G, 3:USXGMII 5G */ nvidia,phy-iface-mode = <0> What are the settings for 1 GBE and RGMII? Compared to the original device tree of the xavier agx devkit, we just changed the PHY node to the following: phy@0 { compatible = "micrel,ksz9031"; reg = <0x0>; interrupt-parent = <0xb>; …

There are two ways can make it works.
way #1:
add “fixed-link” to file “platform/t23x/concord/kernel-dts/cvb/tegra234-ethernet-3737-0000.dtsi”.
fixed-link{
speed = <1000>;
full-duplex;
}
then comment phy-handle.
//phy-handle = <&rgmii_phy>;
then it can work, But only fixed speed to 1000Mbps.If I want to use 100Mbps,I should change speed = <100>.

way #2:
I Changed the tegra_defconfig . Let “CONFIG_MICREL_PHY=y”, Because I use ksz9031.
Then I changed tegra234-ethernet-3737-0000.dtsi almost like this:
tegra234-ethernet-3737-0000.dtsi (1.7 KB)

Then it can word with both 100Mbps and 1000Mbps.

Thanks!