diff options
| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2021-10-20 14:36:13 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2021-11-21 05:37:17 +0300 |
| commit | 25501d8d3ab3f5dc83799731dfb8ebaf03ca5000 (patch) | |
| tree | 761801715275f84d1fee4fd52aeb1a317bc4b0b4 /arch/arm64 | |
| parent | e691f9282a89e24a8e87cdb91a181c6283ee5124 (diff) | |
| download | linux-25501d8d3ab3f5dc83799731dfb8ebaf03ca5000.tar.xz | |
arm64: dts: lx2160abluebox3: update RGMII delays for sja1105 switch
In the new behavior, the sja1105 driver expects there to be explicit
RGMII delays present on the fixed-link ports, otherwise it will complain
that it falls back to legacy behavior, which is to apply RGMII delays
incorrectly derived from the phy-mode string.
In this case, the legacy behavior of the driver is to apply both RX and
TX delays. To preserve that, add explicit 2 nanosecond delays, which are
identical with what the driver used to add (a 90 degree phase shift).
The delays from the phy-mode are ignored by new kernels (it's still
RGMII as long as it's "rgmii*" something), and the explicit
{rx,tx}-internal-delay-ps properties are ignored by old kernels, so the
change works both ways.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/fsl-lx2160a-bluebox3.dts | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-bluebox3.dts b/arch/arm64/boot/dts/freescale/fsl-lx2160a-bluebox3.dts index b21be03da0af..042c486bdda2 100644 --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-bluebox3.dts +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-bluebox3.dts @@ -386,6 +386,8 @@ reg = <2>; ethernet = <&dpmac17>; phy-mode = "rgmii-id"; + rx-internal-delay-ps = <2000>; + tx-internal-delay-ps = <2000>; fixed-link { speed = <1000>; @@ -529,6 +531,8 @@ reg = <2>; ethernet = <&dpmac18>; phy-mode = "rgmii-id"; + rx-internal-delay-ps = <2000>; + tx-internal-delay-ps = <2000>; fixed-link { speed = <1000>; |