[U-Boot] imx6 Solo and LAN8720
Andy Ng
andreas2025 at gmail.com
Fri Jan 17 13:17:09 CET 2014
Thank you for the configuration info about the PHY LAN8720 - I have applied
the changed you have mentioned but I am not getting anywhere.
I have enabled the debug at fec_mxc.c file, and when I execute the 'ping"
command I get the error -22 back, it seems that the problem might be at a
higher layer?
it times out at the send packet function: I am using u-boot-2013-10
U-Boot 2013.10- (Jan 17 2014 - 12:01:38)
CPU: Freescale i.MX6SOLO rev1.1 at 792 MHz
Reset cause: WDOG
Board: imx6 Solo
DRAM: 256 MiB
NAND: 256 MiB
MMC: FSL_SDHC: 0
Display: qvga-rgb (320x240)
Error: no valid bmp image at 10800000
In: serial
Out: serial
Err: serial
Net: eth_init: fec_probe(bd, -1, 0) @ 02188000
fec_mii_setspeed: mii_speed 00000014
fec_mdio_read: phy: 00 reg:02 val:0x7
fec_mdio_read: phy: 00 reg:03 val:0xc0f1
fec_mii_setspeed: mii_speed 00000014
fec_mdio_read: phy: 00 reg:00 val:0x3000
fec_mdio_write: phy: 00 reg:00 val:0xb000
fec_mdio_read: phy: 00 reg:00 val:0x3000
fec_mdio_read: phy: 00 reg:04 val:0x1e1
fec_mdio_read: phy: 00 reg:00 val:0x3000
FEC [PRIME]
Hit any key to stop autoboot: 0
mmc0 is current device
-------
mx6s > ping 172.18.2.5
eth_halt: wait for stop regs
eth_halt: done
fec_mii_setspeed: mii_speed 00000014
fec_open: fec_open(dev)
fec_mdio_read: phy: 00 reg:01 val:0x782d
fec_mdio_read: phy: 00 reg:01 val:0x782d
fec_open:Speed=100
Using FEC device
fec_send: status 0x8c00 index 0 ret -22
fec_recv: ievent 0x0
fec_recv: status 0x8000
fec_recv: stop
fec_recv: ievent 0x0
fec_recv: status 0x8000
fec_recv: stop
fec_recv: ievent 0x0
fec_recv: status 0x8000
fec_recv: stop
static int fec_send(struct eth_device *dev, void *packet, int length)
....
/*
* Wait until frame is sent. On each turn of the wait cycle, we must
* invalidate data cache to see what's really in RAM. Also, we need
* barrier here.
*/
while (--timeout) {
if (!(readl(&fec->eth->x_des_active) & FEC_X_DES_ACTIVE_TDAR))
break;
}
if (!timeout)
ret = -EINVAL;
invalidate_dcache_range(addr, addr + size);
if (readw(&fec->tbd_base[fec->tbd_index].status) & FEC_TBD_READY)
ret = -EINVAL;
debug("fec_send: status 0x%x index %d ret %i\n",
readw(&fec->tbd_base[fec->tbd_index].status),
fec->tbd_index, ret);
....
On Thu, Jan 16, 2014 at 9:37 PM, Andy Ng <andreas2025 at gmail.com> wrote:
> 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
>
>
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