>
> *Hello,*
>
> *I'm on the Kernel 3.8.13-bone56 and I've still this problem :*
>
> *Scanning for Btrfs filesystems*
> *systemd-fsck[202]: rootfs: clean, 110431/966656 files, 771069/3864576
> blocks*
> *[ 7.665617] libphy: PHY 4a101000.mdio:00 not found*
> *[ 7.670642] net eth0: phy 4a101000.mdio:00 not found on slave 0*
> *[ 7.676834] libphy: PHY 4a101000.mdio:01 not found*
> *[ 7.681844] net eth0: phy 4a101000.mdio:01 not found on slave 1*
>
>
> *I've to reboot many times to get lucky .....*
Hello Micka,
This almost sounds like a power issue. How are you powering your board, and
what other peripherals are you using ?
On Mon, Jul 7, 2014 at 12:56 AM, Micka <mickamus...@gmail.com> wrote:
> I would like to know what this means ? Is it a electrical problems ? Can
> we monitor this ?
>
>
> On Mon, Jul 7, 2014 at 9:52 AM, Micka <mickamus...@gmail.com> wrote:
>
>> Hello,
>>
>> I'm on the Kernel *3.8.13-bone56* and I've still this problem :
>>
>> Scanning for Btrfs filesystems
>> systemd-fsck[202]: rootfs: clean, 110431/966656 files, 771069/3864576
>> blocks
>> [ 7.665617] libphy: PHY 4a101000.mdio:00 not found
>> [ 7.670642] net eth0: phy 4a101000.mdio:00 not found on slave 0
>> [ 7.676834] libphy: PHY 4a101000.mdio:01 not found
>> [ 7.681844] net eth0: phy 4a101000.mdio:01 not found on slave 1
>>
>>
>> I've to reboot many times to get lucky .....
>>
>>
>>
>>
>> On Sat, Jul 5, 2014 at 8:19 PM, John Syn <john3...@gmail.com> wrote:
>>
>>> This is a known problem with V3.15 and NFS. We are working on finding a
>>> solution. First, you must build the SMSC driver into the kernel. Currently
>>> it is built as a kernel module which won’t work because you have to mount
>>> the rootfs to load the kernel module. That will eliminate the first issue:
>>>
>>> *3.758612] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00,
>>> driver unknown*
>>>
>>> Next we are trying to find out why the network isn’t getting started.
>>> Looks like something to do with cpsw. Using the same MLO, u-boot, uEnv.txt
>>> and rootfs, V3.8.13-bone57 works just fine. Changing the kernel to
>>> V3.15.3-bone3, I get the same problem you have.
>>>
>>> Regards,
>>>
>>> John
>>>
>>> From: Vishnu Patekar <vishnupatekar0...@gmail.com>
>>> Reply-To: "beagleboard@googlegroups.com" <beagleboard@googlegroups.com>
>>> Date: Saturday, July 5, 2014 at 11:01 AM
>>> To: "beagleboard@googlegroups.com" <beagleboard@googlegroups.com>
>>> Subject: Re: [beagleboard] Re: Beaglebone Black Ethernet Phy Not
>>> Detected on Boot.
>>>
>>> Hello,
>>> I'm using BBB board A5C, and kernel version 3.15.3-bone3.1. I also see
>>> ethernet PHY is not detected. Log as below:
>>> Please refer detailed attached log.
>>>
>>>
>>> *[ 3.740457] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6*
>>> *[ 3.746859] davinci_mdio 4a101000.mdio: detected phy mask fffffffe*
>>> *[ 3.754398] libphy: 4a101000.mdio: probed*
>>> *[ 3.758612] davinci_mdio 4a101000.mdio: phy[0]: device
>>> 4a101000.mdio:00, driver unknown*
>>> *[ 3.767567] Detected MACID = 90:59:af:5c:61:78*
>>> *[ 3.773165] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)*
>>> *[ 3.779741] sr_init: No PMIC hook to init smartreflex*
>>> *[ 3.785201] sr_init: platform driver register failed for SR*
>>> *[ 3.794297] VFS: Cannot open root device "nfs" or
>>> unknown-block(0,255): error -6*
>>> *[ 3.802114] Please append a correct "root=" boot option; here are
>>> the available partitions:*
>>> *[ 3.810888] b300 1875968 mmcblk0 driver: mmcblk*
>>> *[ 3.816464] b301 72261 mmcblk0p1 00000000-01*
>>> *[ 3.822046] b302 1799280 mmcblk0p2 00000000-02*
>>> *[ 3.827617] b310 1024 mmcblk0boot1 (driver?)*
>>> *[ 3.833197] b308 1024 mmcblk0boot0 (driver?)*
>>> *[ 3.838767] Kernel panic - not syncing: VFS: Unable to mount root fs
>>> on unknown-block(0,255)*
>>> *[ 3.847616] CPU: 0 PID: 1 Comm: swapper Not tainted 3.15.3-bone3.1
>>> #1*
>>> *[ 3.854410] [<c00113f5>] (unwind_backtrace) from [<c000fa37>]
>>> (show_stack+0xb/0xc)*
>>> *[ 3.862356] [<c000fa37>] (show_stack) from [<c054dd05>]
>>> (panic+0x65/0x170)*
>>> *[ 3.869572] [<c054dd05>] (panic) from [<c08a6d0b>]
>>> (mount_block_root+0x1af/0x21c)*
>>> *[ 3.877421] [<c08a6d0b>] (mount_block_root) from [<c08a6eb1>]
>>> (prepare_namespace+0xe9/0x128)*
>>> *[ 3.886271] [<c08a6eb1>] (prepare_namespace) from [<c08a6a93>]
>>> (kernel_init_freeable+0x1ab/0x1b8)*
>>> *[ 3.895574] [<c08a6a93>] (kernel_init_freeable) from [<c054d37b>]
>>> (kernel_init+0xb/0xb4)*
>>> *[ 3.904060] [<c054d37b>] (kernel_init) from [<c000d1f9>]
>>> (ret_from_fork+0x11/0x38)*
>>> *[ 3.911998] drm_kms_helper: panic occurred, switching back to text
>>> console*
>>> *[ 3.919217] ---[ end Kernel panic - not syncing: VFS: Unable to
>>> mount root fs on unknown-block(0,255)*
>>>
>>>
>>>
>>> On Sat, Jun 28, 2014 at 2:22 AM, Jay @ Control Module Industries <
>>> cmidr...@gmail.com> wrote:
>>>
>>>> I have encountered the same issue(s) on A6A boards.
>>>>
>>>> I couldn't find a patch, so I wrote this patch to update the device
>>>> tree in the davinci_mdio driver in the 3.15.1 tree, it seems to correct it.
>>>> I would welcome any input on a different approach.
>>>>
>>>> diff --git a/drivers/net/ethernet/ti/davinci_mdio.c
>>>> b/drivers/net/ethernet/ti/davinci_mdio.c
>>>> index 0cca9de..e5a9cdc 100644
>>>> --- a/drivers/net/ethernet/ti/davinci_mdio.c
>>>> +++ b/drivers/net/ethernet/ti/davinci_mdio.c
>>>> @@ -39,6 +39,7 @@
>>>> #include <linux/of.h>
>>>> #include <linux/of_device.h>
>>>> #include <linux/pinctrl/consumer.h>
>>>> +#include <linux/phy.h>
>>>>
>>>> /*
>>>> * This timeout definition is a worst-case ultra defensive measure
>>>> against
>>>> @@ -97,6 +98,10 @@ struct davinci_mdio_data {
>>>> unsigned long access_time; /* jiffies */
>>>> };
>>>>
>>>> +#if IS_ENABLED(CONFIG_OF)
>>>> +static void davinci_mdio_update_dt_from_phymask(u32 phy_mask);
>>>> +#endif
>>>> +
>>>> static void __davinci_mdio_reset(struct davinci_mdio_data *data)
>>>> {
>>>> u32 mdio_in, div, mdio_out_khz, access_time;
>>>> @@ -150,6 +155,11 @@ static int davinci_mdio_reset(struct mii_bus *bus)
>>>> /* restrict mdio bus to live phys only */
>>>> dev_info(data->dev, "detected phy mask %x\n", ~phy_mask);
>>>> phy_mask = ~phy_mask;
>>>> +
>>>> + #if IS_ENABLED(CONFIG_OF)
>>>> + davinci_mdio_update_dt_from_phymask(phy_mask);
>>>> + #endif
>>>> +
>>>> } else {
>>>> /* desperately scan all phys */
>>>> dev_warn(data->dev, "no live phy, scanning all\n");
>>>> @@ -312,6 +322,79 @@ static int davinci_mdio_probe_dt(struct
>>>> mdio_platform_data *data,
>>>> }
>>>> #endif
>>>>
>>>> +#if IS_ENABLED(CONFIG_OF)
>>>> +static void davinci_mdio_update_dt_from_phymask(u32 phy_mask)
>>>> +{
>>>> + int i, len;
>>>> + u32 addr;
>>>> + __be32 *old_phy_p, *phy_id_p;
>>>> + struct property *phy_id_property = NULL;
>>>> + struct device_node *node_p, *slave_p;
>>>> +
>>>> + addr = 0;
>>>> +
>>>> + for (i = 0; i < PHY_MAX_ADDR; i++) {
>>>> + if ((phy_mask & (1 << i)) == 0) {
>>>> + addr = (u32) i;
>>>> + break;
>>>> + }
>>>> + }
>>>> +
>>>> + for_each_compatible_node(node_p, NULL, "ti,cpsw") {
>>>> + for_each_node_by_name(slave_p, "slave") {
>>>> +
>>>> + old_phy_p = (__be32 *) of_get_property(slave_p, "phy_id",
>>>> &len);
>>>> +
>>>> + if (len != (sizeof(__be32 *) * 2))
>>>> + goto err_out;
>>>> +
>>>> + if (old_phy_p) {
>>>> +
>>>> + phy_id_property = kzalloc(sizeof(*phy_id_property),
>>>> GFP_KERNEL);
>>>> +
>>>> + if (! phy_id_property)
>>>> + goto err_out;
>>>> +
>>>> + phy_id_property->length = len;
>>>> + phy_id_property->name = kstrdup("phy_id", GFP_KERNEL);
>>>> + phy_id_property->value = kzalloc(len, GFP_KERNEL);
>>>> +
>>>> + if (! phy_id_property->name)
>>>> + goto err_out;
>>>> +
>>>> + if (! phy_id_property->value)
>>>> + goto err_out;
>>>> +
>>>> + memcpy(phy_id_property->value, old_phy_p, len);
>>>> +
>>>> + phy_id_p = (__be32 *) phy_id_property->value + 1;
>>>> +
>>>> + *phy_id_p = cpu_to_be32(addr);
>>>> +
>>>> + of_update_property(slave_p, phy_id_property);
>>>> +
>>>> + ++addr;
>>>> + }
>>>> + }
>>>> + }
>>>> +
>>>> + return;
>>>> +
>>>> +err_out:
>>>> +
>>>> + if (phy_id_property) {
>>>> + if (phy_id_property->name)
>>>> + kfree(phy_id_property->name);
>>>> +
>>>> + if (phy_id_property->value)
>>>> + kfree(phy_id_property->value);
>>>> +
>>>> + if (phy_id_property)
>>>> + kfree(phy_id_property);
>>>> + }
>>>> +}
>>>> +#endif
>>>> +
>>>> static int davinci_mdio_probe(struct platform_device *pdev)
>>>> {
>>>> struct mdio_platform_data *pdata = dev_get_platdata(&pdev->dev);
>>>>
>>>> --
>>>> For more options, visit http://beagleboard.org/discuss
>>>> ---
>>>> You received this message because you are subscribed to the Google
>>>> Groups "BeagleBoard" group.
>>>> To unsubscribe from this group and stop receiving emails from it, send
>>>> an email to beagleboard+unsubscr...@googlegroups.com.
>>>> For more options, visit https://groups.google.com/d/optout.
>>>>
>>>
>>> --
>>> For more options, visit http://beagleboard.org/discuss
>>> ---
>>> You received this message because you are subscribed to the Google
>>> Groups "BeagleBoard" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
>>> an email to beagleboard+unsubscr...@googlegroups.com.
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>> --
>>> For more options, visit http://beagleboard.org/discuss
>>> ---
>>> You received this message because you are subscribed to the Google
>>> Groups "BeagleBoard" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
>>> an email to beagleboard+unsubscr...@googlegroups.com.
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>
>>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to the Google Groups
> "BeagleBoard" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to beagleboard+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
>
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups
"BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to beagleboard+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
