[U-Boot] [PATCH V2 14/18] arm: mx6: cm_fx6: add ethernet support

Nikita Kiryanov
2014-08-10T17:12:56Z

Add ethernet support for Compulab CM-FX6 CoM

Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tom Rini <trini@ti.com>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
---
Changes in V2:
- No changes

board/compulab/cm_fx6/cm_fx6.c | 100 +++++++++++++++++++++++++++++++++++++++++
board/compulab/cm_fx6/common.h | 1 +
include/configs/cm_fx6.h | 16 ++++++-
3 files changed, 115 insertions(+), 2 deletions(-)

diff --git a/board/compulab/cm_fx6/cm_fx6.c b/board/compulab/cm_fx6/cm_fx6.c
index ac7940b..e993de2 100644
--- a/board/compulab/cm_fx6/cm_fx6.c
+++ b/board/compulab/cm_fx6/cm_fx6.c
@@ -9,13 +9,100 @@
*/

#include <common.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <fdt_support.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/sys_proto.h>
#include <asm/io.h>
+#include <asm/gpio.h>
#include "common.h"

DECLARE_GLOBAL_DATA_PTR;

+#ifdef CONFIG_FEC_MXC
+#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
+ PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
+
+static int mx6_rgmii_rework(struct phy_device *phydev)
+{
+ unsigned short val;
+
+ /* Ar8031 phy SmartEEE feature cause link status generates glitch,
+ * which cause ethernet link down/up issue, so disable SmartEEE
+ */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x3);
+ phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x805d);
+ phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4003);
+ val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe);
+ val &= ~(0x1 << 8);
+ phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val);
+
+ /* To enable AR8031 ouput a 125MHz clk from CLK_25M */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7);
+ phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016);
+ phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007);
+
+ val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe);
+ val &= 0xffe3;
+ val |= 0x18;
+ phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 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);
+
+ return 0;
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+ mx6_rgmii_rework(phydev);
+
+ if (phydev->drv->config)
+ return phydev->drv->config(phydev);
+
+ return 0;
+}
+
+static iomux_v3_cfg_t const enet_pads[] = {
+ IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_GPIO_0__CCM_CLKO1 | MUX_PAD_CTRL(NO_PAD_CTRL)),
+ IOMUX_PADS(PAD_GPIO_3__CCM_CLKO2 | MUX_PAD_CTRL(NO_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD4_DAT0__GPIO2_IO08 | MUX_PAD_CTRL(0x84)),
+ IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK |
+ MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL |
+ MUX_PAD_CTRL(ENET_PAD_CTRL)),
+ IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL |
+ MUX_PAD_CTRL(ENET_PAD_CTRL)),
+};
+
+int board_eth_init(bd_t *bis)
+{
+ SETUP_IOMUX_PADS(enet_pads);
+ /* phy reset */
+ gpio_direction_output(CM_FX6_ENET_NRST, 0);
+ udelay(500);
+ gpio_set_value(CM_FX6_ENET_NRST, 1);
+ enable_enet_clk(1);
+ return cpu_eth_init(bis);
+}
+#endif
+
#ifdef CONFIG_NAND_MXS
static iomux_v3_cfg_t const nand_pads[] = {
IOMUX_PADS(PAD_NANDF_CLE__NAND_CLE | MUX_PAD_CTRL(NO_PAD_CTRL)),
@@ -66,6 +153,19 @@ int board_mmc_init(bd_t *bis)
}
#endif

+#ifdef CONFIG_OF_BOARD_SETUP
+void ft_board_setup(void *blob, bd_t *bd)
+{
+ uint8_t enetaddr[6];
+
+ /* MAC addr */
+ if (eth_getenv_enetaddr("ethaddr", enetaddr)) {
+ fdt_find_and_setprop(blob, "/fec", "local-mac-address",
+ enetaddr, 6, 1);
+ }
+}
+#endif
+
int board_init(void)
{
gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
diff --git a/board/compulab/cm_fx6/common.h b/board/compulab/cm_fx6/common.h
index 05eab34..94ff39e 100644
--- a/board/compulab/cm_fx6/common.h
+++ b/board/compulab/cm_fx6/common.h
@@ -15,6 +15,7 @@

#define CM_FX6_ECSPI_BUS0_CS0 IMX_GPIO_NR(2, 30)
#define CM_FX6_GREEN_LED IMX_GPIO_NR(2, 31)
+#define CM_FX6_ENET_NRST IMX_GPIO_NR(2, 8)

#if defined(CONFIG_FSL_ESDHC)
#include <fsl_esdhc.h>
diff --git a/include/configs/cm_fx6.h b/include/configs/cm_fx6.h
index 345d715..dbe8a19 100644
--- a/include/configs/cm_fx6.h
+++ b/include/configs/cm_fx6.h
@@ -39,8 +39,6 @@
#undef CONFIG_CMD_XIMG
#undef CONFIG_CMD_FPGA
#undef CONFIG_CMD_IMLS
-#undef CONFIG_CMD_NET
-#undef CONFIG_CMD_NFS

/* MMC */
#define CONFIG_MMC
@@ -192,6 +190,19 @@
#define CONFIG_APBH_DMA_BURST8
#endif

+/* Ethernet */
+#define CONFIG_FEC_MXC
+#define CONFIG_FEC_MXC_PHYADDR 0
+#define CONFIG_FEC_XCV_TYPE RGMII
+#define IMX_FEC_BASE ENET_BASE_ADDR
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_ATHEROS
+#define CONFIG_MII
+#define CONFIG_ETHPRIME "FEC0"
+#define CONFIG_ARP_TIMEOUT 200UL
+#define CONFIG_NETMASK 255.255.255.0
+#define CONFIG_NET_RETRY_COUNT 5
+
/* GPIO */
#define CONFIG_MXC_GPIO

@@ -210,6 +221,7 @@
#define CONFIG_STACKSIZE (128 * 1024)
#define CONFIG_SYS_MALLOC_LEN (2 * 1024 * 1024)
#define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS 800 /* 400 KB */
+#define CONFIG_OF_BOARD_SETUP

/* SPL */
#define CONFIG_SPL
--
1.9.1