* [help] PHY driver : Unable to find a PHY (unknown ID?) @ 2013-01-04 9:09 Mylene Josserand 2013-01-04 10:18 ` Thomas Petazzoni 0 siblings, 1 reply; 7+ messages in thread From: Mylene Josserand @ 2013-01-04 9:09 UTC (permalink / raw) To: barebox mailist Hi everyone ! I am new in compiling Barebox (with OE-core) and I need your help. I am using the master branch (maybe I need to checkout a tag ?). The ethernet of my board is a SMSC LAN8700 and the microchip is iMX27. I have configured the new source of barebox to use the Phylib and MII drivers. When my barebox starts, I have an error about the PHY driver : " Unable to find a PHY (unknown ID?) dhcp failed: I/O error dhcp: I/O error " My devinfo : " barebox:/ devinfo devices: `---- platform `---- imx_iim0 `---- imx27-ccm0 `---- imx1-gpt0 `---- imx1-gpio0 `---- imx1-gpio1 `---- imx1-gpio2 `---- imx1-gpio3 `---- imx1-gpio4 `---- imx1-gpio5 `---- imx21-wdt0 `---- imx27-esdctl0 `---- imx21-uart0 `---- cs0 `---- mem0 `---- 0x00000000-0x07ffffff: /dev/ram0 `---- mem1 `---- 0x00000000-0xfffffffe: /dev/mem `---- cfi_flash0 `---- 0x00000000-0x01ffffff: /dev/nor0 `---- 0x00000000-0x0003ffff: /dev/self0 `---- 0x00040000-0x0005ffff: /dev/env0 `---- 0x00000000-0x0003ffff: /dev/nor0.barebox `---- 0x00040000-0x0005ffff: /dev/nor0.bareboxenv `---- 0x00060000-0x002bffff: /dev/nor0.kernel `---- 0x002c0000-0x01ffffff: /dev/nor0.root `---- cfi_flash1 `---- 0x00000000-0x01ffffff: /dev/nor1 `---- imx_nand `---- nand0 `---- 0x00000000-0x1fffffff: /dev/nand0 `---- 0x00000000-0x00ffffff: /dev/nand_oob0 `---- i2c-fsl0 `---- i2c0 `---- lp39720 `---- 0x00000000-0x000000ff: /dev/lp3972 `---- ds133x0 `---- 0x00000000-0x000000ff: /dev/ds133x `---- pca95350 `---- 0x00000000-0x000000ff: /dev/pca9535 `---- i2c-fsl1 `---- i2c1 `---- imxfb `---- imx27-fec `---- miibus0 `---- eth0 `---- mdio_bus `---- i2c `---- fb `---- fb0 `---- 0x00000000-0x000bb7ff: /dev/fb0 `---- fs `---- ramfs0 `---- devfs0 `---- net `---- global drivers: imx27-ccm imx_serial imx-esdctl ramfs devfs tftp imx-gpt imx-gpio SMSC LAN83C185 SMSC LAN8187 SMSC LAN8700 SMSC LAN911x Internal PHY SMSC LAN8710/LAN8720 fec_imx Generic PHY imx_nand cfi_flash i2c-gpio i2c-fsl fb imxfb lp3972 ds133x pca9535 imx-watchdog mem " The SMSC LAN8700 is here but I can not make it work ! I have added some prints on the phy.c and the problem is in the fonction "mdiobus_scan" : if (!edev->phydev) { if (addr >= 0) { dev = mdiobus_scan(bus, addr); if (!dev) { << Failed here ret = -EIO; goto fail; } Did I miss something ? Did I have to specify something in the board info ? Is it correct to use the master branch ? I tried the v2012.12.1 tag but I get some errors before starting barebox ("no stack data available" and other errors). Thank you in advance for any help and happy new year ! -- Mylène JOSSERAND _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [help] PHY driver : Unable to find a PHY (unknown ID?) 2013-01-04 9:09 [help] PHY driver : Unable to find a PHY (unknown ID?) Mylene Josserand @ 2013-01-04 10:18 ` Thomas Petazzoni 2013-01-04 11:03 ` Mylene Josserand 0 siblings, 1 reply; 7+ messages in thread From: Thomas Petazzoni @ 2013-01-04 10:18 UTC (permalink / raw) To: Mylene Josserand; +Cc: barebox mailist Dear Mylene Josserand, Good to see some developers from Toulouse using Barebox! I'm close, in Colomiers. On Fri, 4 Jan 2013 10:09:05 +0100, Mylene Josserand wrote: > I am using the master branch (maybe I need to checkout a tag ?). The > ethernet of my board is a SMSC LAN8700 and the microchip is iMX27. > > I have configured the new source of barebox to use the Phylib and MII > drivers. When my barebox starts, I have an error about the PHY driver : Which board are you targeting? > The SMSC LAN8700 is here but I can not make it work ! > > I have added some prints on the phy.c and the problem is in the fonction > "mdiobus_scan" : > > if (!edev->phydev) { > if (addr >= 0) { > dev = mdiobus_scan(bus, addr); > if (!dev) { << Failed here > ret = -EIO; > goto fail; > } > > Did I miss something ? Do you have a correct PHY address in the fec_platform_data structure in your board file? Best regards, Thomas -- Thomas Petazzoni, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [help] PHY driver : Unable to find a PHY (unknown ID?) 2013-01-04 10:18 ` Thomas Petazzoni @ 2013-01-04 11:03 ` Mylene Josserand 2013-01-04 11:23 ` Thomas Petazzoni 0 siblings, 1 reply; 7+ messages in thread From: Mylene Josserand @ 2013-01-04 11:03 UTC (permalink / raw) To: Thomas Petazzoni; +Cc: barebox mailist Dear Thomas, Thank you for your quick answer ! Le 04/01/2013 11:18, Thomas Petazzoni a écrit : > Dear Mylene Josserand, > > Good to see some developers from Toulouse using Barebox! I'm close, in > Colomiers. Yes ! We are neighbour :) Free Electrons, I know you by name. And the kernel sources on your web site help me a lot ! > > On Fri, 4 Jan 2013 10:09:05 +0100, Mylene Josserand wrote: > >> I am using the master branch (maybe I need to checkout a tag ?). The >> ethernet of my board is a SMSC LAN8700 and the microchip is iMX27. >> >> I have configured the new source of barebox to use the Phylib and MII >> drivers. When my barebox starts, I have an error about the PHY driver : > > Which board are you targeting? It is a "home-made" board with a iMX27. > >> The SMSC LAN8700 is here but I can not make it work ! >> >> I have added some prints on the phy.c and the problem is in the fonction >> "mdiobus_scan" : >> >> if (!edev->phydev) { >> if (addr>= 0) { >> dev = mdiobus_scan(bus, addr); >> if (!dev) {<< Failed here >> ret = -EIO; >> goto fail; >> } >> >> Did I miss something ? > > Do you have a correct PHY address in the fec_platform_data structure in > your board file? Hum, I did not configured it myself. I used a previous configuration of the board which was : " static struct fec_platform_data fec_info = { .xcv_type = MII100, .phy_addr = 1, };" How can I know which address I need to put ? Sorry for, maybe, "newbie" question but I am self-taught in kernel development. > > Best regards, > > Thomas Best regards, -- Mylène JOSSERAND _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [help] PHY driver : Unable to find a PHY (unknown ID?) 2013-01-04 11:03 ` Mylene Josserand @ 2013-01-04 11:23 ` Thomas Petazzoni 2013-01-04 12:46 ` Mylene Josserand 0 siblings, 1 reply; 7+ messages in thread From: Thomas Petazzoni @ 2013-01-04 11:23 UTC (permalink / raw) To: Mylene Josserand; +Cc: barebox mailist Dear Mylene Josserand, On Fri, 4 Jan 2013 12:03:17 +0100, Mylene Josserand wrote: > > Good to see some developers from Toulouse using Barebox! I'm close, in > > Colomiers. > > Yes ! We are neighbour :) Indeed :) > Free Electrons, I know you by name. And the kernel sources on your web > site help me a lot ! Good to know this is useful. > > Which board are you targeting? > > It is a "home-made" board with a iMX27. Ok. > Hum, I did not configured it myself. I used a previous configuration of > the board which was : > " > static struct fec_platform_data fec_info = { > .xcv_type = MII100, > .phy_addr = 1, > };" > > How can I know which address I need to put ? Look at chapter "4.11 PHY Address strapping and LED Output Polarity Selection" of the LAN8700 manual. It says the PHY address is selected according to the value on pins PHYAD[0:4] during PHY reset. So you should check your board schematics and see how these pins are wired to find out what is the PHY address. Best regards, Thomas -- Thomas Petazzoni, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [help] PHY driver : Unable to find a PHY (unknown ID?) 2013-01-04 11:23 ` Thomas Petazzoni @ 2013-01-04 12:46 ` Mylene Josserand 2013-01-04 13:28 ` Eric Bénard 0 siblings, 1 reply; 7+ messages in thread From: Mylene Josserand @ 2013-01-04 12:46 UTC (permalink / raw) To: Thomas Petazzoni; +Cc: barebox mailist Dear Thomas, Le 04/01/2013 12:23, Thomas Petazzoni a écrit : > Dear Mylene Josserand, > > On Fri, 4 Jan 2013 12:03:17 +0100, Mylene Josserand wrote: > >>> Good to see some developers from Toulouse using Barebox! I'm close, in >>> Colomiers. >> >> Yes ! We are neighbour :) > > Indeed :) > >> Free Electrons, I know you by name. And the kernel sources on your web >> site help me a lot ! > > Good to know this is useful. > >>> Which board are you targeting? >> >> It is a "home-made" board with a iMX27. > > Ok. > >> Hum, I did not configured it myself. I used a previous configuration of >> the board which was : >> " >> static struct fec_platform_data fec_info = { >> .xcv_type = MII100, >> .phy_addr = 1, >> };" >> >> How can I know which address I need to put ? > > Look at chapter "4.11 PHY Address strapping and LED Output Polarity > Selection" of the LAN8700 manual. It says the PHY address is selected > according to the value on pins PHYAD[0:4] during PHY reset. So you > should check your board schematics and see how these pins are wired to > find out what is the PHY address. Ok, thank you for the explanation. I have checked and it is the good phy address. I will search deeper in the code the possible problem but if you have an idea of it, do not hesitate ! > > Best regards, > > Thomas Best regards, -- Mylène JOSSERAND _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [help] PHY driver : Unable to find a PHY (unknown ID?) 2013-01-04 12:46 ` Mylene Josserand @ 2013-01-04 13:28 ` Eric Bénard 2013-01-07 13:56 ` Mylene Josserand 0 siblings, 1 reply; 7+ messages in thread From: Eric Bénard @ 2013-01-04 13:28 UTC (permalink / raw) To: Mylene Josserand; +Cc: barebox mailist Hi Mylène, Le Fri, 4 Jan 2013 13:46:15 +0100, "Mylene Josserand" <Mylene.Josserand@navocap.com> a écrit : > I will search deeper in the code the possible problem but if you have an > idea of it, do not hesitate ! > did you check : - the pin mux is properly configured for MII operations (on the right pins connected to the PHY of course), - the reset pin is deasserted before probing the PHY, - the FEC's clock is enabled, Last thing, if you set phy_addr = -1, then IIRC the PHY address will be probed automatically. Best regards, Eric _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [help] PHY driver : Unable to find a PHY (unknown ID?) 2013-01-04 13:28 ` Eric Bénard @ 2013-01-07 13:56 ` Mylene Josserand 0 siblings, 0 replies; 7+ messages in thread From: Mylene Josserand @ 2013-01-07 13:56 UTC (permalink / raw) To: Eric Bénard; +Cc: barebox mailist Hi Eric Bénard, Thank you very much for your answer and your help ! Le 04/01/2013 14:28, Eric Bénard a écrit : > Hi Mylène, > > Le Fri, 4 Jan 2013 13:46:15 +0100, > "Mylene Josserand"<Mylene.Josserand@navocap.com> a écrit : >> I will search deeper in the code the possible problem but if you have an >> idea of it, do not hesitate ! >> > did you check : > - the pin mux is properly configured for MII operations (on the right > pins connected to the PHY of course), I will check that ! > - the reset pin is deasserted before probing the PHY, > - the FEC's clock is enabled, I checked and the clock is enabled. > > Last thing, if you set phy_addr = -1, then IIRC the PHY address will be > probed automatically. I tried it and it fixes the problem ! Maybe the phy_adress was not 1 as Thomas Petazonni indicated but according to LAN8700 documentation, it should. I will search which phy_address is currently the good one. Anyway, thank you Thomas Petazonni and Eric Bénard for your help ! > > Best regards, > Eric Best regards, -- Mylène JOSSERAND _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2013-01-07 13:57 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-01-04 9:09 [help] PHY driver : Unable to find a PHY (unknown ID?) Mylene Josserand 2013-01-04 10:18 ` Thomas Petazzoni 2013-01-04 11:03 ` Mylene Josserand 2013-01-04 11:23 ` Thomas Petazzoni 2013-01-04 12:46 ` Mylene Josserand 2013-01-04 13:28 ` Eric Bénard 2013-01-07 13:56 ` Mylene Josserand
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