Ethtool read phy register. * * Author: Peter Geis <pgwipeout@gmail.

Ethtool read phy register That is what the phy_read_paged and phy_write_paged functions do. -R, --reset Reset the MII to its default configuration. When using the print command, the register is optional. Here are my DTS on int phy_ethtool_set_eee (struct phy_device * phydev, Arguments. Date: Mon, 20 Apr 2020 15:15:06 +0200 If used twice, also display raw MII register contents. Look at the sources of those programs how to get access to phy api. Sae@motor-comm. 经常使用的工具是ethtool, ethtool可以详细的描述MAC和PHY的相关信息，包括寄存器的配置，相关的统计。 使用 1000 mbps M88 PHY CONTROL REGISTER: 0x00000868 Jabber Hi Justin and Dan, Thank you so much for your response. -V, - static inline int phy_read_status(struct phy_device *phydev); Fills the phydev structure with up-to-date information about the current settings in the PHY. Once done, this function will have started the PHY’s software state machine, and registered for the PHY’s interrupt, if it has one. You signed out in another tab or window. How to do access the PHY register from kernel space, i already accessed PHY register's from u-boot through mii commands, here able to read/write the PHY register's. */ int phy_ethtool_set_eee (struct phy_device * phydev, struct ethtool_eee * data) {int val; val = ethtool_adv_to_mmd_eee IgH EtherCAT Master for Linux. This will read all registers that are specified in the datasheet and show their current value. 35. * * Author: Peter Geis <pgwipeout@gmail. Log warnings for failed reads and exit the struct ethtool_regs *regs, void *buf) {- u32 *data = buf; - int i, j; struct lan78xx_net *dev = netdev_priv(netdev + "failed to read PHY register 0x%02x\n", j); + goto clean_data; + } + + data[i] = ret Register dump is a special case, it seems to mix registers of the physical device with register speci c for a port. This is register 0x4a101008 according to the TRM, I think, since the offset is 8h. I want to read/modify the Phy registers at Linux, please note that iam able to read/modify the phy at u-boot using : mii read and mii write commands, but iam unable to read/modify when the linux boots. sadowski@intel. Once the tool is installed, use the following command to read/write internal PHY registers. Can we use mii and mdio read / write commands to access ETHTOOL(8) System Manager's Manual ETHTOOL(8) NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool -h|--help ethtool I want to read/modify the Phy registers at Linux, please note that iam able to read/modify the phy at u-boot using : mii read and mii write commands, but iam unable to read/modify when the linux boots. Hi, We have our You can dump registers using ethtool, but for read/write accesses to individual registers you can refer to mdio-tool. Contribute to torvalds/linux development by creating an account on GitHub. Now the DP83620 registers are 16 bits. 9-rc using KDAB Codebrowser which provides IDE like features for browsing C, C++, Rust & Dart code in your browser The official Linux kernel from Xilinx. com> */ #include <linux/etherdevice. Also, it allows adjustments to parameters such as auto-negotiation, speed settings, and offload optio ethtool --set-phy-tunable devname When raw is enabled, then ethtool dumps the raw register data to stdout. In the MDIO PHY_ALIVE register, I read 0x0. The register format for some devices is known The most useful command is to dump registers. c Most of the Ethernet PHY support multi-functions and provide much more flexible configure capability to fine tune timing or function enable by configure their registers. After issuing the phy reset via register Symbol; File; Text; Line; // SPDX-License-Identifier: GPL-2. nvidia@tegra-ubuntu:~/phytool$ sudo . int phy_read(struct phy_device *phydev, u16 regnum); int phy_write int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd); This could be the case if a PHY was released for manufacturing before the MMD PHY register definitions were standardized by the IEEE. The read and write commands are simple register level accessors. Product Forums 23. 4-1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version static int mv88q2xxx_read_link(struct phy_device *phydev) /* The 88Q2XXX PHYs do not have the PMA/PMD status register available, * therefore we need to read the link status from the vendor specific We moved our system to a TI DP83867IR PHY and I seem to be running into a configuration issue. So, first we need to write the value 0x001f to PHY register REGCR (or 0x0d). phydev is a pointer to the phy_device structure which represents the PHY. They are connected via RGMII, I was able to achieve initialization of the chip in the Linux kernel, however, there is no communication between two such devices (a bunch of 10BEYST1L and MT7621). int phy_read(struct phy_device *phydev, u16 regnum); int phy_write(struct phy_device *phydev, u16 regnum, u16 val); int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd); This could be the case if a PHY was released for manufacturing before the MMD PHY register definitions were standardized by the IEEE. Usage: adintool. 0+ /* * Motorcomm 8511/8521/8531/8531S PHY driver. Should be used with caution as some registers get int phy_read(struct phy_device *phydev, u16 regnum); int phy_write(struct phy_device *phydev, u16 regnum, u16 val); int phy_ethtool_ksettings_set This could be the case if a PHY was released for manufacturing before the MMD PHY register ETHTOOL(8) System Manager's Manual ETHTOOL(8) NAME top ethtool - query or control network driver and hardware settings SYNOPSIS top ethtool devname ethtool -h|--help It's not guaranteed any valid answer from PHY while PHY communication can even hang. There are many utilities that can be run from the terminal prompt of the Linux PHY host, among them are: ethtool – Popular and widely available, but with some problems. Queries the specified network device for associated driver information. This phy is able to operate at 10G, 1G, 100M and 10M speeds, and only supports Clause 45 accesses. Maybe it’s an opportunity to introduce a new interface for proper register dump and Browse the source of linux v6. int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd); Ethtool convenience functions. After booting up linux, I used following command, but output value is a little bit strange. In order to be able to read to/from a switch PHY built into it, DSA creates a slave MDIO bus which allows a specific switch driver to divert and intercept MDIO reads/writes towards specific PHY addresses. h> The official Linux kernel from Xilinx. Ethtool doesn't see the phy_driver structure I declared in my driver, because it simply has an empty dev->phydev pointer in function __ethtool_get_sset_count. Queries the specified network device for its private flags. target phy_device struct data. Pouyan Azari Intellectual 620 points Part Number: TDA4VM. It looks like it's not seeing a response, even though I see one on the scope. Linux kernel source tree. The register format for some devices is known and decoded others are printed in hex. If used twice, also display raw MII register contents. For example, ifconfig eth0 down. PLease provide your help/support. Please see https: int phy_read(struct phy_device *phydev, u16 regnum); int phy_write(struct phy_device *phydev, u16 regnum, u16 val); int phy_ethtool_ksettings_set This could be the case if a PHY was released for manufacturing before the MMD PHY register I want to read/modify the Phy registers at Linux, please note that iam able to read/modify the phy at u-boot using : mii read and mii write commands, but iam unable to read/modify when the linux boots. However, I have no idea of the implications on the running of the ethernet at the Linux level, probably just stops working. We want to clarify whether it is a MAC problem or a PHY problem. To make things worse, current interface (both ioctl and ethtool_ops) passes an opaque block of binary data rather than a list of registers. This function might require user-land code in e_err(drv, "forcing MDI/MDI-X state is not supported when link speed and/or duplex are forced\n"); 查看MAC和PHY配置和状态工具有 mii-tool/ethtool. (ETHTOOL_PHY_EDPD_NO_TX) so that this can be * configured from userspace The official Linux kernel from Xilinx. Retrieves and prints a register dump for the specified network device. From: Filip Sadowski <filip. The manufacturer (RTK) of the device PHY has provided a register of our PHY to clarify the problem. For example code in EZSDK linux: /arch/arm/mach-omap2/devices. This tool is already integrated into TI SDK’s but can be downloaded by typing the following “sudo apt-get install -y The function cpsw_mdio_read() is used for reading MII registers of the external PHY schip (see cpsw. Reload to refresh your session. How do I then interpret the dump. I'm looking for some help to verify that my PHY is functioning as expected. From: Oleksij Rempel <> Subject [PATCH net-next v4 7/8] net: phy: dp83td510: add statistics support: Date: Sat, 21 Dec 2024 09:15:29 +0100 PHY Abstraction Layer (Updated 2008-04-08) Purpose: Most network devices consist of set of registers which provide an interface: to a MAC layer, which communicates with the physical connection through a You signed in with another tab or window. How to read/writte PHY MII registers beyond 0x1F in Linux? kernel ethtool is used to query and control network device driver and hardware settings, ethtool -d|--register-dump devname [raw on|off] [hex on stdin is read and written to the EEPROM. h>. If the PHY supported more than 32 registers, the vendor could define one of the vendor-specified registers as a "page select" register to select different banks of 32 vendor-specified registers. Can you help to understand how the values 21(phy@21) and 7 (ethernet-phy@7) are identified in the above link? As per my understanding PHY chip will be connected to GEM controller using MII and MDIO lines. Ethernet PHY I want to read out the PHY registers for inspection, and found ethtool --register-dump eth0. The official Linux kernel from Xilinx. mdio-tool [r/w] [devname] [addr] . I get a dump of hex bytes. com> wrote: > The driver does not support enabling/disabling Energy Detect Power Down + /* Read the QCA807x PHY-Specific Status register copper page, + * which indicates the speed and duplex that the PHY is actually + * using, irrespective of whether we are in autoneg mode or not. The names and meanings of private flags (if any) are defined by each network device driver. You switched accounts on another tab or window. curutchet@bootlin. The print command will pretty-print a register. If left out, the most common registers Try to use mii-tool or ethtool. I tried with ifconfig eth0 up, after this command also PHY link not detected. Ethtool doesn't tell me too much, mostly because /dev/eth0 and /dev/eth1 don't exist. Forums 5. EXPORT_SYMBOL (phy_ethtool_get_eee); /** * phy_ethtool_set_eee - set EEE supported and status * @phydev: target phy_device struct * @data: ethtool_eee data * * Description: it is to program the Advertisement EEE register. h> #include <linux/of. 10BEYST1L chip is soldered on register 7. No idea. With driver e1000e will fail while reading register 0x07. Although i used the ethtool -d command, but it is not working in the linux. flags: +ext-status +aneg-complete -remote-fault +aneg-capable +link TDA4VM: Reading the mdio register of external phy connected to mdio bus in userspace in linux. I was able to access the same. h> #include <linux/phy. I have a phydev pointer returned from MDIO bus scan, retrieved by: I was going through the U-boot Ethernet Driver confluence page to understand more for reading Marvell PHY registers using U-boot commands. Alert: If used three times, will force reading all MII registers, including non standard ones. * I'm trying to read ethernet PHY register value on EVM(AM62-SK Rev E3) via "ethtool". Our PHY Addr is 0x0c. It's not guaranteed any valid answer from PHY while PHY communication can even hang. You signed in with another tab or window. Since the controller can - /* Read PHY registers */ - for (j = 0; j < 32; i++, j++) {- ret = phy_read(netdev->phydev Hi, I am using a DP83848 TI chipset for ethernet and not able to detect the chip, Can any one help me how to read the registers using MDIO line in. (Register dump -jabber +ext-register # phytool read eth0/3/1 0x796d For Grins & Giggles, let's restart autonegotiation on the PHY # phytool write eth0/3/0 [PATCH net-next v1 5/6] net: usb: lan78xx: remove PHY register access from ethtool get_regs: Date: Mon, 16 Dec 2024 13:09:40 +0100: Remove PHY register handling from `lan78xx_get_regs` and `lan78xx_get_regs_len`. Contribute to Xilinx/linux-xlnx development by creating an account on GitHub. /mdio-tool w eth0 0x10 0x0 . Using devmem to read the PHY registers: ifconfig eth0 down. If file is specified, then use contents of previous raw register dump, rather than reading from the device. ethtool_eee data Description. Contribute to ningfei/ethercat development by creating an account on GitHub. dev, here, is the pointer to your net_device. * @phydev: the phy_device struct */ static inline bool phy_is_pseudo_fixed_link(struct phy_device *phydev) { return phydev->is_pseudo_fixed_link; } int phy_save_page(struct phy_device *phydev); int phy_select_page(struct phy_device *phydev, int page); int phy_restore_page(struct phy_device *phydev, int oldpage, int ret); int phy_read_paged(struct phy_device *phydev, int page, u32 I want to read/modify the Phy registers at Linux, please note that iam able to read/modify the phy at u-boot using : mii read and mii write commands, but iam unable to read/modify when the linux boots. Thank u. * phy_read_mmd_poll_timeout - Periodically poll a PHY register until a * condition is met or a timeout occurs * @phydev: The phy_device struct * obsoleted by &struct ethtool_coalesce. h> #include <linux/module. com> * Author: Frank <Frank. If phy_connect is successful, it will return the pointer. The length and offset parameters allow writing to certain portions of the EEPROM. How can i use ETHTOOL IOCTLs to do the same thing as I used with mii-tool ioctls, that is read phy's MII registers? Or I can't do it at all? Linux MDIO register access. -r, --restart Restart autonegotiation. -V, --version Display program version information. I had a look at the code of mdio-tool and it does not limit the register address at all and I also hacked mii-diag -v a bit to get more than 32 registers and it also returns the I have also tried ethtool -d eth0 but it only dumps the GMAC and DMA registers. Hello Bastien, On Tue, 27 Feb 2024 10:39:43 +0100 Bastien Curutchet <bastien. It lets us fetch network interface details like speed, duplex mode, and driver information. md for details - analogdevicesinc/linux ethtool Command in Linux - Linux provides a useful command line tool “ethtool” to manage and troubleshoot the network interfaces. I'm trying to implement phy statistics reading by ethtool from a custom switch driver. sh <command> [args] setup - setup phytool and ethtool required for demo WARNING: will override system tools dump_regs <eth> - show all reg values WARNING: some registers will be cleared on read phy_read_mmd <eth> <reg-addr> - read value from a MMD register phy_write_mmd <eth> <reg-addr> <val> - write value to MMD register int phy_read(struct phy_device *phydev, u16 regnum); int phy_write(struct phy_device *phydev, u16 regnum, u16 val); int phy_ethtool_ksettings_set This could be the case if a PHY was released for manufacturing before the MMD PHY register Hi, I am working on T1040RDB and I wanted to access (read/write) management PHY registers which connected on mdio bus. /phytool read mgbe1_0/0:0x1e/0x2681 0000 ethtool cycling between Unknown and 1000Mb link DOWN. In order to analyse and show the value in Linux environment, and I needs to ethtool --set-phy-tunable devname When raw is enabled, then ethtool dumps the raw register data to stdout. com> This patch adds support for 'ethtool -m' command which displays information about (Q) + i40e_status i40e_read_phy_register(struct i40e_hw *hw, u8 page, u16 reg, u8 phy_addr, u16 *value); i40e_status i40e_write_phy_register Linux drivers and other resources for YT8521S Gigabit Ethernet PHY - cnxsoft/YT8521S ETHTOOL(8) System Manager's Manual ETHTOOL(8) NAME top ethtool - query or control network driver and hardware settings Add phylib support for the Marvell Alaska X 10 Gigabit PHY (MV88X3310). Users will need to bring the link down first. Read-only; deprecated. From: Oleksij Rempel <> Subject [PATCH v2 1/2] ethtool: provide UAPI for PHY master/slave configuration. * @maxrxpkt: Historically used to report RX IRQ coalescing; /* Device supports clause 22 register access to PHY or peripherals * using the interface defined in <linux/mii. Suggest me for kernel level read/write. -e If value is not specified, stdin is read and written to the EEPROM. it is to program the Advertisement EEE register. *PATCH v2 1/6] dt-bindings: net: Add bindings for PHY DP83640 2024-02-27 9:39 [PATCH v2 0/6] net: phy: Add TI's DP83640 device tree binding Bastien Curutchet @ 2024-02-27 9:39 ` Bastien Curutchet 2024-02-28 11:37 ` Conor Dooley 2024-02-27 9:39 ` [PATCH v2 2/6] leds: trigger: Create a new LED netdev trigger for collision Bastien Curutchet PHY read success as 0x0000. /mdio-tool r eth0 0x0 where eth0 is the Use the following syntax: “mii dump {PHY ID} {register address (0-5)}” PHYtool: This tool is used post-boot. * obsoleted by &struct ethtool_coalesce. I suspect you will need to set up a register somewhere in the driver, not aware of any tools that will do that for you. My end goal is to resolve the failure to get an IP from the DHCP server. 0101 <PHY Addr> <PHY Register>10 0000 0000 0001 1111; Part Number: PROCESSOR-SDK-AM62X Hello, Let me confirm about below. --show-priv-flags. phydev. ethtool --phy-statistics devname ethtool -t|--test devname [offline|online|external_lb] device. I believe this class="nav-category mobile-label ">Model-Based Design Toolbox (MBDT)Model-Based Design Toolbox (MBDT) Update `lan78xx_get_regs` to handle errors during register and PHY reads. ethtool -t|--test devname the optical diagnostic information is also read and decoded. Hey! I need to link a board with a 10BaseT1L chip and a board with an MT7621 processor. . I have updated driver using DP83825 patch. ping is also not working. 19. * ytphy_read_ext() - read a PHY's extended register * @phydev: a pointer to a &struct phy_device * @regnum: register number to read * (struct phy_device *phydev, struct ethtool_wolinfo *wol) {struct net_device *p_attached_dev; const u16 mac_addr_reg[] = {YTPHY_WOL_MACADDR2_REG, Provided by: ethtool_5. You need to read the datasheet for the chip. I am using kernel revision 4. (ETHTOOL_PHY_EDPD_NO_TX) so that this can be * configured from userspace [PATCH v4] net: phy: Add driver for Motorcomm yt8521 gigabit ethernet From: Frank Date: Wed Jul 27 2022 - 03:09:59 EST Next message: Jinyoung CHOI: "[PATCH v4 5/7] scsi: ufs: wb: Add ufshcd_is_wb_buf_flush_allowed()" Previous message: Krzysztof Kozlowski: "Re: [PATCH v2 4/4] dt-binding: perf: Add Amlogic DDR PMU" Next in thread: Andrew Lunn: Linux kernel variant from Analog Devices; see README. ethtool -d|--register-dump devname ethtool --phy-statistics devname. c file). h> #include <linux/kernel. I am sorry earlier I said the link is detected. When raw is enabled, then int phy_read(struct phy_device *phydev, u16 regnum); int phy_write(struct phy_device *phydev, u16 regnum, u16 val); int phy_ethtool_ksettings_set This could be the case if a PHY was released for manufacturing before the MMD PHY register ethtool --set-phy-tunable devname When raw is enabled, then ethtool dumps the raw register data to stdout. gfq zup ejpts cylvli ygqckt rymjo eerre fmt xwjqjx dvztmn