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Groups > linux.kernel > #1575712
| From | Andrew Lunn <andrew@lunn.ch> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v3 3/3] net: phy: dp83867: Recover from "port mirroring" N/A MODE4 |
| Date | 2017-02-07 14:10 +0100 |
| Message-ID | <t8dGZ-3hn-115@gated-at.bofh.it> (permalink) |
| References | <t86vM-6Us-7@gated-at.bofh.it> <t86vM-6Us-15@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, Feb 07, 2017 at 06:20:24AM +0100, Lukasz Majewski wrote:
> The DP83867 when not properly bootstrapped - especially with LED_0 pin -
> can enter N/A MODE4 for "port mirroring" feature.
>
> To provide normal operation of the PHY, one needs not only to explicitly
> disable the port mirroring feature, but as well stop some IC internal
> testing (which disables RGMII communication).
>
> To do that the STRAP_STS1 (0x006E) register must be read and RESERVED bit
> 11 examined. When it is set, the another RESERVED bit (11) at PHYCR
> (0x0010) register must be clear to disable testing mode and enable RGMII
> communication.
>
> Thorough explanation of the problem can be found at following e2e thread:
> "DP83867IR: Problem with RESERVED bits in PHY Control Register (PHYCR) -
> Linux driver"
>
> https://e2e.ti.com/support/interface/ethernet/f/903/p/571313/2096954#2096954
>
> Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Andrew
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[PATCH v3 2/3] net: phy: dp83867: Add lane swapping support in the DP83867 TI's PHY driver Lukasz Majewski <lukma@denx.de> - 2017-02-07 06:30 +0100
[PATCH v3 3/3] net: phy: dp83867: Recover from "port mirroring" N/A MODE4 Lukasz Majewski <lukma@denx.de> - 2017-02-07 06:30 +0100
Re: [PATCH v3 3/3] net: phy: dp83867: Recover from "port mirroring" N/A MODE4 Andrew Lunn <andrew@lunn.ch> - 2017-02-07 14:10 +0100
Re: [PATCH v3 3/3] net: phy: dp83867: Recover from "port mirroring" N/A MODE4 David Miller <davem@davemloft.net> - 2017-02-07 20:10 +0100
Re: [PATCH v3 2/3] net: phy: dp83867: Add lane swapping support in the DP83867 TI's PHY driver Andrew Lunn <andrew@lunn.ch> - 2017-02-07 14:10 +0100
Re: [PATCH v3 2/3] net: phy: dp83867: Add lane swapping support in the DP83867 TI's PHY driver Andrew Lunn <andrew@lunn.ch> - 2017-02-07 14:20 +0100
Re: [PATCH v3 2/3] net: phy: dp83867: Add lane swapping support in the DP83867 TI's PHY driver David Miller <davem@davemloft.net> - 2017-02-07 20:10 +0100
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