topic U-Boot Port to Yocto - Phy not found in i.MX Processors

topic U-Boot Port to Yocto - Phy not found in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457935#M71653 <HTML><HEAD></HEAD><BODY><P>I am working on a custom u-boot project for Yocto. I pretty much have everything working but cannot get the ethernet to connect. The issue appears to be with the Phy device but once at the command prompt, I can see the KSZ9031 Phy device. I have added a board_phy_config() function in my board file and it is being executed. I am using the same config code that was previously used and verified under LTIB.</P><P></P><P>Following is the u-boot output with some printf debug lines I added to the phy driver. As can be seen, the Phy is addressable but still isn't seen during the boot.</P><P></P><P>Any ideas what is wrong?</P><P></P><P>U-Boot 2014.04 (Sep 17 2015 - 11:37:59)</P><P></P><P></P><P>CPU:   Freescale i.MX6Q rev1.2 at 792 MHz</P><P>CPU:   Temperature 37 C, calibration data: 0x5534cc69</P><P>Reset cause: POR</P><P>Board: SBC35-C398Q</P><P>Boot Device: SD</P><P>I2C:   ready</P><P>DRAM:  2 GiB</P><P>MMC:   FSL_SDHC: 0, FSL_SDHC: 1</P><P>*** Warning - bad CRC, using default environment</P><P></P><P></P><P>In:    serial</P><P>Out:   serial</P><P>Err:   serial</P><P>mmc1 is current device</P><P>Net:   <SPAN style="line-height: 1.5;">Phy not found</SPAN></P><P><SPAN style="line-height: 1.5;">phy_read++  addr = 7  devad = ffffffff  regnum = 0</SPAN></P><P>phy_write++  addr = 7  devad = ffffffff  regnum = 0 val = ffff</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 0</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 9</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = 9 val = 1b00</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = 2</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 4</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = c002</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 0</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = 2</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 5</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = c002</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 0</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = 2</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 6</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = c002</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 0</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = 2</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 8</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = c002</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 3ff</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = 2</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 10</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = c002</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 4000</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 0</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = 0 val = 1340</P><P>ksz9031_config()++</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 1</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = f</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 4</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 9</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 0</P><P>ksz9031_config()--</P><P>FEC</P><P>Normal Boot</P><P>Hit any key to stop autoboot:  0</P><P></P><P>SBC35-C398Q U-Boot > mii info</P><P>PHY 0x07: OUI = 0x0885, Model = 0x22, Rev = 0x01, 100baseT, FDX</P><P></P><P><SPAN style="line-height: 1.5;">SBC35-C398Q U-Boot > mdio read 7 2</SPAN></P><P>7 is not a known ethernet</P><P>Reading from bus FEC</P><P>PHY at address 7:</P><P>2 - 0x22</P><P></P><P>SBC35-C398Q U-Boot > mdio read 7 3</P><P>7 is not a known ethernet</P><P>Reading from bus FEC</P><P>PHY at address 7:</P><P>3 - 0x1621</P><P></P><P>SBC35-C398Q U-Boot ></P></BODY></HTML> Thu, 17 Sep 2015 17:20:50 GMT PaulDeMetrotion 2015-09-17T17:20:50Z U-Boot Port to Yocto - Phy not found https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457935#M71653 <HTML><HEAD></HEAD><BODY><P>I am working on a custom u-boot project for Yocto. I pretty much have everything working but cannot get the ethernet to connect. The issue appears to be with the Phy device but once at the command prompt, I can see the KSZ9031 Phy device. I have added a board_phy_config() function in my board file and it is being executed. I am using the same config code that was previously used and verified under LTIB.</P><P></P><P>Following is the u-boot output with some printf debug lines I added to the phy driver. As can be seen, the Phy is addressable but still isn't seen during the boot.</P><P></P><P>Any ideas what is wrong?</P><P></P><P>U-Boot 2014.04 (Sep 17 2015 - 11:37:59)</P><P></P><P></P><P>CPU:   Freescale i.MX6Q rev1.2 at 792 MHz</P><P>CPU:   Temperature 37 C, calibration data: 0x5534cc69</P><P>Reset cause: POR</P><P>Board: SBC35-C398Q</P><P>Boot Device: SD</P><P>I2C:   ready</P><P>DRAM:  2 GiB</P><P>MMC:   FSL_SDHC: 0, FSL_SDHC: 1</P><P>*** Warning - bad CRC, using default environment</P><P></P><P></P><P>In:    serial</P><P>Out:   serial</P><P>Err:   serial</P><P>mmc1 is current device</P><P>Net:   <SPAN style="line-height: 1.5;">Phy not found</SPAN></P><P><SPAN style="line-height: 1.5;">phy_read++  addr = 7  devad = ffffffff  regnum = 0</SPAN></P><P>phy_write++  addr = 7  devad = ffffffff  regnum = 0 val = ffff</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 0</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 9</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = 9 val = 1b00</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = 2</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 4</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = c002</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 0</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = 2</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 5</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = c002</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 0</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = 2</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 6</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = c002</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 0</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = 2</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 8</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = c002</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 3ff</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = 2</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 10</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = d val = c002</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = e val = 4000</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 0</P><P>phy_write++  addr = 7  devad = ffffffff  regnum = 0 val = 1340</P><P>ksz9031_config()++</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 1</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = f</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 4</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 9</P><P>phy_read++  addr = 7  devad = ffffffff  regnum = 0</P><P>ksz9031_config()--</P><P>FEC</P><P>Normal Boot</P><P>Hit any key to stop autoboot:  0</P><P></P><P>SBC35-C398Q U-Boot > mii info</P><P>PHY 0x07: OUI = 0x0885, Model = 0x22, Rev = 0x01, 100baseT, FDX</P><P></P><P><SPAN style="line-height: 1.5;">SBC35-C398Q U-Boot > mdio read 7 2</SPAN></P><P>7 is not a known ethernet</P><P>Reading from bus FEC</P><P>PHY at address 7:</P><P>2 - 0x22</P><P></P><P>SBC35-C398Q U-Boot > mdio read 7 3</P><P>7 is not a known ethernet</P><P>Reading from bus FEC</P><P>PHY at address 7:</P><P>3 - 0x1621</P><P></P><P>SBC35-C398Q U-Boot ></P></BODY></HTML> Thu, 17 Sep 2015 17:20:50 GMT https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457935#M71653 PaulDeMetrotion 2015-09-17T17:20:50Z Re: U-Boot Port to Yocto - Phy not found https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457936#M71654 <HTML><HEAD></HEAD><BODY><P>Not much of a response. After more analysis, I found that the 'Phy not found' message is generated in the function get_phy_device_by_mask() which is shown below. Maybe someone has some experience with this code. I cannot determine why the function search_for_existing_phy() does not return a valid value since the Phy device is present and addressable. I have verified that the address is a 7 which is the Phy device address. I cannot find where the array phymap[addr] is being initialized? Am I possibly missing some device initialization function that needs to be done before this code is called?  </P><P></P><P></P><P>static struct phy_device *search_for_existing_phy(struct mii_dev *bus,</P><P>                unsigned phy_mask, phy_interface_t interface)</P><P>{</P><P>        /* If we have one, return the existing device, with new interface */</P><P>        while (phy_mask) {</P><P>                int addr = ffs(phy_mask) - 1;</P><P>                if (<STRONG>bus->phymap[addr]</STRONG>) {</P><P>                        bus->phymap[addr]->interface = interface;</P><P>                        return bus->phymap[addr];</P><P>                }</P><P>                phy_mask &= ~(1 << addr);</P><P>        }</P><P>        return NULL;</P><P>}</P><P></P><P></P><P>static struct phy_device *get_phy_device_by_mask(struct mii_dev *bus,</P><P>                unsigned phy_mask, phy_interface_t interface)</P><P>{</P><P>        int i;</P><P>        struct phy_device *phydev;</P><P></P><P>        phydev = <STRONG>search_for_existing_phy</STRONG>(bus, phy_mask, interface);</P><P>        if (phydev)</P><P>                return phydev;</P><P>        /* Try Standard (ie Clause 22) access */</P><P>        /* Otherwise we have to try Clause 45 */</P><P>        for (i = 0; i < 5; i++) {</P><P>                phydev = create_phy_by_mask(bus, phy_mask,</P><P>                                i ? i : MDIO_DEVAD_NONE, interface);</P><P>                if (IS_ERR(phydev))</P><P>                        return NULL;</P><P>                if (phydev)</P><P>                        return phydev;</P><P>        }</P><P>        printf("Phy not found\n");</P><P>        return phy_device_create(bus, ffs(phy_mask) - 1, 0xffffffff, interface);</P><P>}</P></BODY></HTML> Fri, 18 Sep 2015 13:32:50 GMT https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457936#M71654 PaulDeMetrotion 2015-09-18T13:32:50Z Re: U-Boot Port to Yocto - Phy not found https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457937#M71655 <HTML><HEAD></HEAD><BODY><P>HI Paul</P><P></P><P>I believe it may be useful to look at micrel drivers at</P><P></P><P><A href="https://community.nxp.com/thread/311185">Micrel KSZ8091 drivers for i.MX6 platform. Any leads appreciated.</A> </P><P><A href="http://lists.infradead.org/pipermail/linux-arm-kernel/2013-June/178629.html" title="http://lists.infradead.org/pipermail/linux-arm-kernel/2013-June/178629.html">[PATCH 3/3] ARM: i.MX6: add ethernet phy fixup for KSZ9031</A> </P><P></P><P>Best regards</P><P>igor</P><P>-----------------------------------------------------------------------------------------------------------------------</P><P>Note: If this post answers your question, please click the Correct Answer button. Thank you!</P><P>-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Sat, 19 Sep 2015 14:55:46 GMT https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457937#M71655 igorpadykov 2015-09-19T14:55:46Z Re: U-Boot Port to Yocto - Phy not found https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457938#M71656 <HTML><HEAD></HEAD><BODY><P>These patches are for Linux drivers. I am having issues with u-boot access to the PHY.</P></BODY></HTML> Wed, 25 May 2016 19:45:19 GMT https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457938#M71656 PaulDeMetrotion 2016-05-25T19:45:19Z Re: U-Boot Port to Yocto - Phy not found https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457939#M71657 <HTML><HEAD></HEAD><BODY><P>HI, <STRONG style="background-color: #ffffff; color: #51626f; font-weight: normal;">Paul</STRONG></P><P><STRONG style="background-color: #ffffff; color: #51626f; font-weight: normal;">Did you solve this problem?</STRONG></P></BODY></HTML> Mon, 03 Apr 2017 06:41:39 GMT https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457939#M71657 kevinchau 2017-04-03T06:41:39Z Re: U-Boot Port to Yocto - Phy not found https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457940#M71658 <HTML><HEAD></HEAD><BODY><P>Yes I did. The following code in my board specific file was not scanning the appropriate phy addr</P><P></P><P>    /* scan phy 4,5,6,7 */<BR />    phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);</P><P></P><P>The second variable passed to the function phy_find_by_mask() needed to include address 7 which is the MSB of the mask. If you want to scan all addresses from 0-7, then pass 0xff as the parameter.</P></BODY></HTML> Fri, 07 Apr 2017 16:26:29 GMT https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457940#M71658 PaulDeMetrotion 2017-04-07T16:26:29Z Re: U-Boot Port to Yocto - Phy not found https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457941#M71659 <HTML><HEAD></HEAD><BODY><P>Hi Paul,</P><P>as per mii info command my phy id is 0x18 </P><P>what paramter should i pass in above function</P><P></P><P>thanks & regards</P></BODY></HTML> Sat, 06 May 2017 06:39:13 GMT https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457941#M71659 sameerarvikar 2017-05-06T06:39:13Z Re: U-Boot Port to Yocto - Phy not found https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457942#M71660 <HTML><HEAD></HEAD><BODY><P>imx6q with PHY chip AR8035, u-boot of L4.1.15-2.0.0 display error:</P><P>                   Net:   Board Net Initialization Failed</P><P>according to the method, it works well now, thanks so much.</P></BODY></HTML> Thu, 09 Nov 2017 09:36:09 GMT https://community.nxp.com/t5/i-MX-Processors/U-Boot-Port-to-Yocto-Phy-not-found/m-p/457942#M71660 liu_jialu 2017-11-09T09:36:09Z