From: Tim Harvey Date: Thu, 18 Sep 2025 15:44:48 +0000 (-0700) Subject: arm64: dts: imx8mm-venice-gw700x: reduce RGMII CLK drive strength X-Git-Tag: v6.19-rc1~100^2~20^2~110 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c4d3066a58f657e395762c0105f4052d9df52b2;p=thirdparty%2Fkernel%2Flinux.git arm64: dts: imx8mm-venice-gw700x: reduce RGMII CLK drive strength The i.MX8M Mini FEC RGMII tracelength is less than 1in and does not require a x6 drive strength. Reduce the CLK drive strength to x1 for lower emissions. Additionally since TXC is not a high frequency clock, use slow slew rate (FSEL=0) for lower emmissions and improved signal quality. Signed-off-by: Tim Harvey Reviewed-by: Peng Fan Signed-off-by: Shawn Guo --- diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw700x.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw700x.dtsi index baf46fe281334..dca213c85cc3b 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw700x.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw700x.dtsi @@ -446,7 +446,7 @@ MX8MM_IOMUXC_ENET_RD2_ENET1_RGMII_RD2 0x91 MX8MM_IOMUXC_ENET_RD1_ENET1_RGMII_RD1 0x91 MX8MM_IOMUXC_ENET_RD0_ENET1_RGMII_RD0 0x91 - MX8MM_IOMUXC_ENET_TXC_ENET1_RGMII_TXC 0x1f + MX8MM_IOMUXC_ENET_TXC_ENET1_RGMII_TXC 0x0 MX8MM_IOMUXC_ENET_RXC_ENET1_RGMII_RXC 0x91 MX8MM_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL 0x91 MX8MM_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL 0x1f