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| author | Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com> | 2026-05-07 06:32:02 +0300 |
|---|---|---|
| committer | Dinh Nguyen <dinguyen@kernel.org> | 2026-05-07 15:07:22 +0300 |
| commit | c5637e5ceb4b4bbe80fceec77f5e663c4ff7b508 (patch) | |
| tree | 3316db1eb64900aa1c08cde897d2d7889742d35f | |
| parent | 90d083b05f057c3107a7344f652d3a1ae1a2536e (diff) | |
| download | linux-c5637e5ceb4b4bbe80fceec77f5e663c4ff7b508.tar.xz | |
arm64: dts: socfpga: agilex5: Fix phy-mode to rgmii as HW provides clock delay
The Agilex5 SoC provides RGMII TX/RX clock delay compensation through
its integrated I/O hardware. Using phy-mode = "rgmii-id" instructs the
MAC driver to additionally insert internal TX/RX delays, resulting in
double delay being applied and causing Ethernet link timing issues.
Change phy-mode to "rgmii" across all Agilex5 device tree files to
reflect that the clock delay is already handled by the hardware and
no additional software-inserted delay is required. Add an inline comment
to satisfy checkpatch and document the hardware-provided delay.
Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
4 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts index dae0db9f8819..57d3c5807c65 100644 --- a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts @@ -44,7 +44,7 @@ &gmac2 { status = "okay"; - phy-mode = "rgmii-id"; + phy-mode = "rgmii"; /* TX/RX clock delays provided by Agilex5 I/O hardware */ phy-handle = <&emac2_phy0>; max-frame-size = <9000>; diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_013b.dts b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_013b.dts index 86137380df04..82cd4115746e 100644 --- a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_013b.dts +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_013b.dts @@ -43,7 +43,7 @@ &gmac2 { status = "okay"; - phy-mode = "rgmii-id"; + phy-mode = "rgmii"; /* TX/RX clock delays provided by Agilex5 I/O hardware */ phy-handle = <&emac2_phy0>; max-frame-size = <9000>; diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_modular.dts b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_modular.dts index e728cedb4cbd..4d32b6928ce1 100644 --- a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_modular.dts +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_modular.dts @@ -46,7 +46,7 @@ &gmac2 { status = "okay"; - phy-mode = "rgmii-id"; + phy-mode = "rgmii"; /* TX/RX clock delays provided by Agilex5 I/O hardware */ phy-handle = <&emac2_phy0>; max-frame-size = <9000>; diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_nand.dts b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_nand.dts index 21faa47681fa..81443096cf99 100644 --- a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_nand.dts +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_nand.dts @@ -41,7 +41,7 @@ &gmac0 { status = "okay"; - phy-mode = "rgmii-id"; + phy-mode = "rgmii"; /* TX/RX clock delays provided by Agilex5 I/O hardware */ phy-handle = <&emac0_phy0>; max-frame-size = <9000>; |