How can I connect RMII2 pins to MAC of AM3359 in uboot-2013.01.01

ge zhiming

Other Parts Discussed in Thread: AM3359

Hi,guys

I use a LAN8710A PHY connect am3359 through RMII2 ,

I adjust the configuration in uboot-2013.01.01 and provide a external low jitter 50 MHz RMII LVCMOS reference clock to both LAN8710a and AM335x,I make RMII2 pinmux like this

static struct module_pin_mux rmii2_pin_mux[] = {
{OFFSET(gpmc_a11), MODE(3) | RXACTIVE}, /* RMII2_RXD0 */
{OFFSET(gpmc_a10), MODE(3) | RXACTIVE}, /* RMII2_RXD1 */
{OFFSET(gpmc_wpn), MODE(3) | RXACTIVE}, /* RMII2_RXERR */
{OFFSET(gpmc_a0), MODE(3)}, /* RMII2_TXEN */
{OFFSET(gpmc_a5), MODE(3)}, /* RMII2_TXD0 */
{OFFSET(gpmc_a4), MODE(3)}, /* RMII2_TXD1 */
{OFFSET(gpmc_wait0), MODE(3) | RXACTIVE}, /* RMII2_CRS_DV */
{OFFSET(mii_col), MODE(1) | RXACTIVE}, /* RMII2_REFCLK */
{OFFSET(mdio_data), MODE(0) | RXACTIVE | PULLUP_EN},/* MDIO_DATA */
{OFFSET(mdio_clk), MODE(0) | PULLUP_EN}, /* MDIO_CLK */
{-1},
};

and set the RMII_SEL 0XC5,change cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if = PHY_INTERFACE_MODE_RMII;

now I can't find how the MAC connect the RMII2 pinmux.

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

This pinmux seems correct. What do you mean by "now I can't find how the MAC connect the RMII2 pinmux"?

0 ge zhiming over 10 years ago in reply to Biser Gatchev-XID

Intellectual 470 points

Hi,Biser

I did the pinmux,but I can't find where the system use it in uboot.

0 Miroslav Kiradzhiyski XID over 10 years ago in reply to ge zhiming

TI__Mastermind 25235 points

Hi,

The module_pin_mux structures are used inside <u-boot_dir>/board/ti/am335x/mux.c, more specifically inside the enable_board_pin_mux() function.

Best regards,
Miroslav

0 ge zhiming over 10 years ago in reply to Miroslav Kiradzhiyski XID

Intellectual 470 points

Hi,

I use the AM3559 connect to LAN8710a through RMII2,

I have made the following modifications:

+#define RMII_MODE_ENABLE 0xC5

###.....

static struct cpsw_slave_data cpsw_slaves[] = {
{
.slave_reg_ofs = 0x208,
.sliver_reg_ofs = 0xd80,
.phy_id = 1,
},
{
.slave_reg_ofs = 0x308,
.sliver_reg_ofs = 0xdc0,
.phy_id = 0, //my PHY AD pins connect to GND through resistor.
},
};

#####.....

if (board_is_bone() || board_is_bone_lt() || board_is_idk()) {
writel(RMII_MODE_ENABLE, &cdev->miisel);
cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
PHY_INTERFACE_MODE_RMII;

}

but there has no data send in tx0 and tx1 pins when I make ping,are there any configure should I do?

0 ge zhiming over 9 years ago in reply to Biser Gatchev-XID

Intellectual 470 points

Hi,Biser,

Thank you for your help,now the RMII2 works fine.

Processors

Processors forum

How can I connect RMII2 pins to MAC of AM3359 in uboot-2013.01.01