[U-Boot] [PATCH v4] cgtqmx6eval: Add Ethernet support
Otavio Salvador
otavio at ossystems.com.br
Wed Jul 29 01:24:41 CEST 2015
cgtqmx6eval can be populated with a AR8035 or KSZ9031 depending on the
board revision.
Add Ethernet support.
Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
---
Changes in v4:
- Rework to use macros where is possible
board/congatec/cgtqmx6eval/cgtqmx6eval.c | 207 +++++++++++++++++++++++++++++++
include/configs/cgtqmx6eval.h | 13 ++
include/micrel.h | 4 +
3 files changed, 224 insertions(+)
diff --git a/board/congatec/cgtqmx6eval/cgtqmx6eval.c b/board/congatec/cgtqmx6eval/cgtqmx6eval.c
index 7de6460..574891e 100644
--- a/board/congatec/cgtqmx6eval/cgtqmx6eval.c
+++ b/board/congatec/cgtqmx6eval/cgtqmx6eval.c
@@ -27,6 +27,10 @@
#include <power/pfuze100_pmic.h>
#include <linux/fb.h>
#include <ipu_pixfmt.h>
+#include <malloc.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <micrel.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -43,6 +47,11 @@ DECLARE_GLOBAL_DATA_PTR;
#define MX6Q_QMX6_PFUZE_MUX IMX_GPIO_NR(6, 9)
+
+#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)
+
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
@@ -98,6 +107,51 @@ static iomux_v3_cfg_t const usb_otg_pads[] = {
MX6_PAD_GPIO_1__USB_OTG_ID | MUX_PAD_CTRL(NO_PAD_CTRL),
};
+static iomux_v3_cfg_t enet_pads_ksz9031[] = {
+ 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_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RXC__GPIO6_IO30 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ MX6_PAD_RGMII_RD0__GPIO6_IO25 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ MX6_PAD_RGMII_RD1__GPIO6_IO27 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ MX6_PAD_RGMII_RD2__GPIO6_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ MX6_PAD_RGMII_RD3__GPIO6_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ MX6_PAD_RGMII_RX_CTL__GPIO6_IO24 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+static iomux_v3_cfg_t enet_pads_final_ksz9031[] = {
+ MX6_PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
+};
+
+static iomux_v3_cfg_t enet_pads_ar8035[] = {
+ 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_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
+};
+
#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
struct i2c_pads_info i2c_pad_info1 = {
.scl = {
@@ -169,6 +223,159 @@ int power_init_board(void)
return 0;
}
+
+int board_eth_init(bd_t *bis)
+{
+ struct phy_device *phydev;
+ struct mii_dev *bus;
+ unsigned short id1, id2;
+ int ret;
+
+ iomux_v3_cfg_t enet_reset = MX6_PAD_EIM_D23__GPIO3_IO23 |
+ MUX_PAD_CTRL(NO_PAD_CTRL);
+
+ /* check whether KSZ9031 or AR8035 has to be configured */
+ imx_iomux_v3_setup_multiple_pads(enet_pads_ar8035,
+ ARRAY_SIZE(enet_pads_ar8035));
+ imx_iomux_v3_setup_pad(enet_reset);
+
+ /* phy reset */
+ gpio_direction_output(IMX_GPIO_NR(3, 23), 0);
+ udelay(2000);
+ gpio_set_value(IMX_GPIO_NR(3, 23), 1);
+ udelay(500);
+
+ bus = fec_get_miibus(IMX_FEC_BASE, -1);
+ if (!bus)
+ return -EINVAL;
+ phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
+ if (!phydev) {
+ printf("Error: phy device not found.\n");
+ ret = -ENODEV;
+ goto free_bus;
+ }
+
+ /* get the PHY id */
+ id1 = phy_read(phydev, MDIO_DEVAD_NONE, 2);
+ id2 = phy_read(phydev, MDIO_DEVAD_NONE, 3);
+
+ if ((id1 == 0x22) && ((id2 & 0xFFF0) == 0x1620)) {
+ /* re-configure for Micrel KSZ9031 */
+ printf("configure Micrel KSZ9031 Ethernet Phy at address %d\n",
+ phydev->addr);
+
+ /* phy reset: gpio3-23 */
+ gpio_set_value(IMX_GPIO_NR(3, 23), 0);
+ gpio_set_value(IMX_GPIO_NR(6, 30), (phydev->addr >> 2));
+ gpio_set_value(IMX_GPIO_NR(6, 25), 1);
+ gpio_set_value(IMX_GPIO_NR(6, 27), 1);
+ gpio_set_value(IMX_GPIO_NR(6, 28), 1);
+ gpio_set_value(IMX_GPIO_NR(6, 29), 1);
+ imx_iomux_v3_setup_multiple_pads(enet_pads_ksz9031,
+ ARRAY_SIZE(enet_pads_ksz9031));
+ gpio_set_value(IMX_GPIO_NR(6, 24), 1);
+ udelay(500);
+ gpio_set_value(IMX_GPIO_NR(3, 23), 1);
+ imx_iomux_v3_setup_multiple_pads(enet_pads_final_ksz9031,
+ ARRAY_SIZE(enet_pads_final_ksz9031));
+ } else if ((id1 == 0x004d) && (id2 == 0xd072)) {
+ /* configure Atheros AR8035 - actually nothing to do */
+ printf("configure Atheros AR8035 Ethernet Phy at address %d\n",
+ phydev->addr);
+ } else {
+ printf("Unknown Ethernet-Phy: 0x%04x 0x%04x\n", id1, id2);
+ ret = -EINVAL;
+ goto free_phydev;
+ }
+
+ ret = fec_probe(bis, -1, IMX_FEC_BASE, bus, phydev);
+ if (ret)
+ goto free_phydev;
+
+ return 0;
+
+free_phydev:
+ free(phydev);
+free_bus:
+ free(bus);
+ return ret;
+}
+
+int mx6_rgmii_rework(struct phy_device *phydev)
+{
+ unsigned short id1, id2;
+ unsigned short val;
+
+ /* check whether KSZ9031 or AR8035 has to be configured */
+ id1 = phy_read(phydev, MDIO_DEVAD_NONE, 2);
+ id2 = phy_read(phydev, MDIO_DEVAD_NONE, 3);
+
+ if ((id1 == 0x22) && ((id2 & 0xFFF0) == 0x1620)) {
+ /* finalize phy configuration for Micrel KSZ9031 */
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, 2);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, 4);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, MII_KSZ9031_MOD_DATA_POST_INC_W | 0x2);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, 0x0000);
+
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, 2);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, 5);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, MII_KSZ9031_MOD_DATA_POST_INC_W | 0x2);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, MII_KSZ9031_MOD_REG);
+
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, 2);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, 6);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, MII_KSZ9031_MOD_DATA_POST_INC_W | 0x2);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, 0xFFFF);
+
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, 2);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, 8);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, MII_KSZ9031_MOD_DATA_POST_INC_W | 0x2);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, 0x3FFF);
+
+ /* fix KSZ9031 link up issue */
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, 0x0);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, 0x4);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, MII_KSZ9031_MOD_DATA_NO_POST_INC);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, 0x6);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, MII_KSZ9031_MOD_REG);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, 0x3);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, MII_KSZ9031_MOD_DATA_NO_POST_INC);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, 0x1A80);
+ }
+
+ if ((id1 == 0x004d) && (id2 == 0xd072)) {
+ /* enable AR8035 ouput a 125MHz clk from CLK_25M */
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, 0x7);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, MII_KSZ9031_MOD_DATA_POST_INC_RW | 0x16);
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_CONTROL, MII_KSZ9031_MOD_DATA_NO_POST_INC | 0x7);
+ val = phy_read(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA);
+ val &= 0xfe63;
+ val |= 0x18;
+ phy_write(phydev, MDIO_DEVAD_NONE, MMD_ACCESS_REG_DATA, val);
+
+ /* introduce tx clock delay */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5);
+ val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
+ val |= 0x0100;
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val);
+
+ /* disable hibernation */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0xb);
+ val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x3c40);
+ }
+ return 0;
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+ mx6_rgmii_rework(phydev);
+
+ if (phydev->drv->config)
+ phydev->drv->config(phydev);
+
+ return 0;
+}
static void setup_iomux_uart(void)
{
diff --git a/include/configs/cgtqmx6eval.h b/include/configs/cgtqmx6eval.h
index fb5b82e..92930c8 100644
--- a/include/configs/cgtqmx6eval.h
+++ b/include/configs/cgtqmx6eval.h
@@ -97,6 +97,19 @@
#define CONFIG_LBA48
#define CONFIG_LIBATA
+/* Ethernet */
+#define CONFIG_CMD_PING
+#define CONFIG_CMD_DHCP
+#define CONFIG_CMD_MII
+#define CONFIG_FEC_MXC
+#define CONFIG_MII
+#define IMX_FEC_BASE ENET_BASE_ADDR
+#define CONFIG_FEC_XCV_TYPE RGMII
+#define CONFIG_ETHPRIME "FEC"
+#define CONFIG_FEC_MXC_PHYADDR 6
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_ATHEROS
+
/* Command definition */
#define CONFIG_MXC_UART_BASE UART2_BASE
diff --git a/include/micrel.h b/include/micrel.h
index 04c9ecf..e6d145d 100644
--- a/include/micrel.h
+++ b/include/micrel.h
@@ -20,6 +20,10 @@
#define MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW 0x6
#define MII_KSZ9031_EXT_RGMII_CLOCK_SKEW 0x8
+/* Registers */
+#define MMD_ACCESS_CONTROL 0xd
+#define MMD_ACCESS_REG_DATA 0xe
+
struct phy_device;
int ksz9021_phy_extended_write(struct phy_device *phydev, int regnum, u16 val);
int ksz9021_phy_extended_read(struct phy_device *phydev, int regnum);
--
2.4.6
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