Messages in this thread Patch in this message | | | From | "Ooi, Joyce" <> | Subject | [PATCH] arm64: dts: stratix10: Change pad skew values for EMAC0 PHY driver | Date | Tue, 24 Apr 2018 11:01:58 +0800 |
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The HPS EMAC0 drive strength is changed to 4mA because the initial 8mA drive strength has caused CE test to fail. This requires changes on the pad skew for EMAC0 PHY driver. Based on several measurements done, Tx clock does not require the extra 0.96ns delay.
Signed-off-by: Ooi, Joyce <joyce.ooi@intel.com> --- .../boot/dts/altera/socfpga_stratix10_socdk.dts | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts index 0007564..8785f78 100644 --- a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts +++ b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts @@ -79,7 +79,7 @@ rxd2-skew-ps = <420>; /* 0ps */ rxd3-skew-ps = <420>; /* 0ps */ txen-skew-ps = <0>; /* -420ps */ - txc-skew-ps = <1860>; /* 960ps */ + txc-skew-ps = <900>; /* 0ps */ rxdv-skew-ps = <420>; /* 0ps */ rxc-skew-ps = <1680>; /* 780ps */ }; -- 1.7.1
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