Dear colleagues,
I have setup a LAN8720 phy for my imx6Solo/DL custom board but no packets coming out. I can see 50MHz going into the phy from the REF_OUT Pin of the SOLO, I can read the phy ID using the u-boot MDIO commands but when I do ftp or ping nothing comes out.
mx6s > mdio list FEC: 0 - SMSC LAN8710/LAN8720 <--> FEC
For this design I am using ENET_ANATOP_ETHERNET_REF_OUT. Have you used LAN8720 in a similar configuration:
The pinmux i have is the following:
/* * Ethernet PINS for LAN8720 */ static iomux_v3_cfg_t const enet_pads[] = { MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL), MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL), MX6_PAD_ENET_CRS_DV__ENET_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL), MX6_PAD_GPIO_16__ENET_ANATOP_ETHERNET_REF_OUT | MUX_PAD_CTRL(ENET_PAD_CTRL), MX6_PAD_ENET_RX_ER__ENET_RX_ER | MUX_PAD_CTRL(ENET_PAD_CTRL), MX6_PAD_ENET_TX_EN__ENET_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL), MX6_PAD_ENET_RXD0__ENET_RDATA_0 | MUX_PAD_CTRL(ENET_PAD_CTRL), MX6_PAD_ENET_RXD1__ENET_RDATA_1 | MUX_PAD_CTRL(ENET_PAD_CTRL), MX6_PAD_ENET_TXD0__ENET_TDATA_0 | MUX_PAD_CTRL(ENET_PAD_CTRL), MX6_PAD_ENET_TXD1__ENET_TDATA_1 | MUX_PAD_CTRL(ENET_PAD_CTRL), /* LAN8720 PHY Reset */ MX6_PAD_SD4_DAT1__GPIO_2_9 | MUX_PAD_CTRL(NO_PAD_CTRL), /* Note: The INT is not handled */ MX6_PAD_ENET_REF_CLK__GPIO_1_23 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
Where ENET_PAT_CTRL is set as:
#define ENET_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \ PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
And the Ethernet configuration in the config file as follows:
/* Ethernet Configuration */ #define CONFIG_CMD_PING #define CONFIG_CMD_DHCP #define CONFIG_CMD_MII #define CONFIG_CMD_NET #define CONFIG_FEC_MXC #define CONFIG_MII #define IMX_FEC_BASE ENET_BASE_ADDR #define CONFIG_FEC_XCV_TYPE RMII #define CONFIG_ETHPRIME "FEC" #define CONFIG_FEC_MXC_PHYADDR 0
#define CONFIG_PHYLIB #define CONFIG_PHY_SMSC
In the board file:
#ifdef CONFIG_FEC_MXC
/* * Initialise the pins, and reset the PHY */ static void setup_iomux_enet(void) { imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
/* Reset LAN8720 PHY */ gpio_direction_output(ETH_PHY_RESET, 1); udelay(150); gpio_set_value(ETH_PHY_RESET, 0); udelay(150); gpio_set_value(ETH_PHY_RESET, 1); udelay(200); }
int enable_fec_anatop_clock(void) { u32 reg = 0; s32 timeout = 100000;
struct anatop_regs __iomem *anatop = (struct anatop_regs __iomem *)ANATOP_BASE_ADDR;
reg = readl(&anatop->pll_enet); if ((reg & BM_ANADIG_PLL_ENET_POWERDOWN) || (!(reg & BM_ANADIG_PLL_ENET_LOCK))) { reg &= ~BM_ANADIG_PLL_ENET_POWERDOWN; writel(reg, &anatop->pll_enet); while (timeout--) { if (readl(&anatop->pll_enet) & BM_ANADIG_PLL_ENET_LOCK) break; } if (timeout < 0) return -ETIMEDOUT; }
/* Enable FEC clock */ reg |= BM_ANADIG_PLL_ENET_ENABLE; reg &= ~BM_ANADIG_PLL_ENET_BYPASS; writel(reg, &anatop->pll_enet);
return 0; }
int board_eth_init(bd_t *bis) { int ret;
setup_iomux_enet();
ret = cpu_eth_init(bis); if (ret) { printf("FEC MXC: %s:failed\n", __func__); return ret; }
return 0; }
static int setup_fec(void) { struct iomuxc_base_regs *iomuxc_regs = (struct iomuxc_base_regs *)IOMUXC_BASE_ADDR; int ret;
/* set gpr1[21] to select anatop clock */ clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK, 1 << 21);
ret = enable_fec_anatop_clock(); if (ret) return ret;
return 0; } #endif
int board_late_init(void) { #ifdef CONFIG_CMD_BMODE add_board_boot_modes(board_boot_modes); #endif
return 0; }
int board_init(void) { /* address of boot parameters */ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
/* Read the board ID */
/* Setup the FEC clock */ #ifdef CONFIG_FEC_MXC setup_fec(); #endif
return 0; }
The clock gating are as: /* set the default clock gate to save power */ DATA 4, CCM_CCGR0, 0x00C03F3F DATA 4, CCM_CCGR1, 0x0030FC03 DATA 4, CCM_CCGR2, 0x0FFFC000 DATA 4, CCM_CCGR3, 0x3FF00000 DATA 4, CCM_CCGR4, 0x00FFF300 DATA 4, CCM_CCGR5, 0x0F0000C3 DATA 4, CCM_CCGR6, 0x000003FF
/* enable AXI cache for VDOA/VPU/IPU */ DATA 4, MX6_IOMUXC_GPR4, 0xF00000CF /* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */ DATA 4, MX6_IOMUXC_GPR6, 0x007F007F DATA 4, MX6_IOMUXC_GPR7, 0x007F007F
/* * Setup CCM_CCOSR register as follows: * * cko1_en = 1 --> CKO1 enabled * cko1_div = 111 --> divide by 8 * cko1_sel = 1011 --> ahb_clk_root * * This sets CKO1 at ahb_clk_root/8 = 132/8 = 16.5 MHz */ DATA 4, CCM_CCOSR, 0x000000fb
The ethaddr: ethaddr=02:24:08:32:68:08
Any assistance will be very much appreciated. Thank you. A