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LF-13425 arm64: dts: imx8mq: adjust TX drive strength of FEC

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The default drive strength of TXD, TXC and TX_CTL were all set
to 0x7, which is the maximum drive strength. However, it will
cause low dB margin issue at 250MHz frequency band. Based on
the suggestion from SE team, change the drive strength from
0x7 to 0x6.

Signed-off-by: Wei Fang <wei.fang@nxp.com>
Reviewed-by: Clark Wang <xiaoning.wang@nxp.com>
Acked-by: Jason Liu <jason.hui.liu@nxp.com>
This commit is contained in:
Wei Fang 2024-09-04 13:06:28 +08:00 committed by Jason Liu
parent 3da9266a17
commit d23d64eea5
1 changed files with 6 additions and 6 deletions
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12
arch/arm64/boot/dts/freescale/imx8mq-evk.dts
View File

@ -894,18 +894,18 @@
fsl,pins = <
MX8MQ_IOMUXC_ENET_MDC_ENET1_MDC 0x3
MX8MQ_IOMUXC_ENET_MDIO_ENET1_MDIO 0x23
MX8MQ_IOMUXC_ENET_TD3_ENET1_RGMII_TD3 0x1f
MX8MQ_IOMUXC_ENET_TD2_ENET1_RGMII_TD2 0x1f
MX8MQ_IOMUXC_ENET_TD1_ENET1_RGMII_TD1 0x1f
MX8MQ_IOMUXC_ENET_TD0_ENET1_RGMII_TD0 0x1f
MX8MQ_IOMUXC_ENET_TD3_ENET1_RGMII_TD3 0x1e
MX8MQ_IOMUXC_ENET_TD2_ENET1_RGMII_TD2 0x1e
MX8MQ_IOMUXC_ENET_TD1_ENET1_RGMII_TD1 0x1e
MX8MQ_IOMUXC_ENET_TD0_ENET1_RGMII_TD0 0x1e
MX8MQ_IOMUXC_ENET_RD3_ENET1_RGMII_RD3 0x91
MX8MQ_IOMUXC_ENET_RD2_ENET1_RGMII_RD2 0x91
MX8MQ_IOMUXC_ENET_RD1_ENET1_RGMII_RD1 0x91
MX8MQ_IOMUXC_ENET_RD0_ENET1_RGMII_RD0 0x91
MX8MQ_IOMUXC_ENET_TXC_ENET1_RGMII_TXC 0x1f
MX8MQ_IOMUXC_ENET_TXC_ENET1_RGMII_TXC 0x1e
MX8MQ_IOMUXC_ENET_RXC_ENET1_RGMII_RXC 0x91
MX8MQ_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL 0x91
MX8MQ_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL 0x1f
MX8MQ_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL 0x1e
MX8MQ_IOMUXC_GPIO1_IO09_GPIO1_IO9 0x19
>;
};