Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1522762

[PATCH net 0/3] Fix OdroidC2 Gigabit Tx link issue

Show all headers | View raw

This patchset fixes an issue with the OdroidC2 board (DWMAC + RTL8211F).
Initially reported as a low Tx throughput issue at gigabit speed, the
platform enters LPI too often. This eventually break the link (both Tx
and Rx), and require to bring the interface down and up again to get the
Rx path working again.

The root cause of this issue is not fully understood yet but disabling EEE
advertisement on the PHY prevent this feature to be negotiated.
With this change, the link is stable and reliable, with the expected
throughput performance.

The patchset adds options in the realtek phy driver to disable EEE
advertisement, through device tree, for the phy version supporting EEE.
Then EEE is disabled in the OdroidC2 device tree for Gigabit speed.
100M is not affected by this issue.

Jerome Brunet (3):
  net: phy: realtek: add eee advertisement disable options
  dt-bindings: net: add DT bindings for realtek phys
  ARM64: dts: meson: odroidc2: disable 1000t-eee advertisement

 .../devicetree/bindings/net/realtek-phy.txt        | 20 +++++++
 .../arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 15 +++++
 drivers/net/phy/realtek.c                          | 65 +++++++++++++++++++++-
 3 files changed, 99 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/net/realtek-phy.txt

-- 
2.7.4

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH net 0/3] Fix OdroidC2 Gigabit Tx link issue Jerome Brunet <jbrunet@baylibre.com> - 2016-11-15 15:30 +0100
  [PATCH net 1/3] net: phy: realtek: add eee advertisement disable options Jerome Brunet <jbrunet@baylibre.com> - 2016-11-15 15:30 +0100
    Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement disable  options Andrew Lunn <andrew@lunn.ch> - 2016-11-15 17:40 +0100
      Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement disable  options Florian Fainelli <f.fainelli@gmail.com> - 2016-11-15 18:10 +0100
        Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement  disable options Jerome Brunet <jbrunet@baylibre.com> - 2016-11-16 11:00 +0100
          Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement disable  options Andrew Lunn <andrew@lunn.ch> - 2016-11-16 14:30 +0100
            Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement  disable options Jerome Brunet <jbrunet@baylibre.com> - 2016-11-16 16:00 +0100
              Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement disable  options Andrew Lunn <andrew@lunn.ch> - 2016-11-16 16:10 +0100
                Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement  disable options Jerome Brunet <jbrunet@baylibre.com> - 2016-11-16 16:40 +0100
                Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement disable  options Florian Fainelli <f.fainelli@gmail.com> - 2016-11-16 18:10 +0100
    Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement disable options Anand Moon <linux.amoon@gmail.com> - 2016-11-16 18:10 +0100
      Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement  disable options Jerome Brunet <jbrunet@baylibre.com> - 2016-11-17 11:30 +0100
        Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement disable options Anand Moon <linux.amoon@gmail.com> - 2016-11-17 19:10 +0100
          Re: [PATCH net 1/3] net: phy: realtek: add eee advertisement  disable options Jerome Brunet <jbrunet@baylibre.com> - 2016-11-17 22:50 +0100
  [PATCH net 2/3] dt-bindings: net: add DT bindings for realtek phys Jerome Brunet <jbrunet@baylibre.com> - 2016-11-15 15:40 +0100
    Re: [PATCH net 2/3] dt-bindings: net: add DT bindings for realtek  phys Rob Herring <robh@kernel.org> - 2016-11-16 16:20 +0100
      Re: [PATCH net 2/3] dt-bindings: net: add DT bindings for realtek  phys Jerome Brunet <jbrunet@baylibre.com> - 2016-11-16 16:30 +0100
  [PATCH net 3/3] ARM64: dts: meson: odroidc2: disable 1000t-eee advertisement Jerome Brunet <jbrunet@baylibre.com> - 2016-11-15 15:40 +0100

csiph-web