on kernel lf-5.10.35-2.0.0. Using ksz9131 phy error:
[ 5.863248] imx-dwmac 30bf0000.ethernet eth0: PHY [stmmac-1:02] driver [Microchip KSZ9131 Gigabit PHY] (irq=POLL)
[ 6.880650] imx-dwmac 30bf0000.ethernet: Failed to reset the dma
[ 6.886683] imx-dwmac 30bf0000.ethernet eth0: stmmac_hw_setup: DMA engine initialization failed
[ 6.895405] imx-dwmac 30bf0000.ethernet eth0: stmmac_open: Hw setup failed
Schematic diagram：
Device tree:
&eqos {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_eqos>;
phy-mode = "rgmii-id";
phy-handle = <ðphy0>;
snps,reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>;
/* snps,reset-active-low; */
snps,reset-delays-us = <0 10000 50000>;
status = "okay";
mdio {
compatible = "snps,dwmac-mdio";
#address-cells = <1>;
#size-cells = <0>;
phy-reset-post-delay = <150>;
phy-reset-duration = <10>;
ethphy0: ethernet-phy@1 {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <2>;
eee-broken-1000t;
rxc-dll-2ns = <1>;
txc-dll-2ns = <1>;
};
};
};
pinctrl_eqos: eqosgrp {
fsl,pins = <
MX8MP_IOMUXC_ENET_MDC__ENET_QOS_MDC 0x3
MX8MP_IOMUXC_ENET_MDIO__ENET_QOS_MDIO 0x3
MX8MP_IOMUXC_ENET_RD0__ENET_QOS_RGMII_RD0 0x91
MX8MP_IOMUXC_ENET_RD1__ENET_QOS_RGMII_RD1 0x91
MX8MP_IOMUXC_ENET_RD2__ENET_QOS_RGMII_RD2 0x91
MX8MP_IOMUXC_ENET_RD3__ENET_QOS_RGMII_RD3 0x91
MX8MP_IOMUXC_ENET_RXC__CCM_ENET_QOS_CLOCK_GENERATE_RX_CLK 0x91
MX8MP_IOMUXC_ENET_RX_CTL__ENET_QOS_RGMII_RX_CTL 0x91
MX8MP_IOMUXC_ENET_TD0__ENET_QOS_RGMII_TD0 0x1f
MX8MP_IOMUXC_ENET_TD1__ENET_QOS_RGMII_TD1 0x1f
MX8MP_IOMUXC_ENET_TD2__ENET_QOS_RGMII_TD2 0x1f
MX8MP_IOMUXC_ENET_TD3__ENET_QOS_RGMII_TD3 0x1f
MX8MP_IOMUXC_ENET_TX_CTL__ENET_QOS_RGMII_TX_CTL 0x1f
MX8MP_IOMUXC_ENET_TXC__CCM_ENET_QOS_CLOCK_GENERATE_TX_CLK 0x1f
>;
};
I solved this issue.
(1) for clock and pin configure
(2)voltage changer mismatch。
in voltage changer datasheet:
