[U-Boot] [PATCH 2/2] mx6sxsabresd: Add Ethernet support
Fabio Estevam
festevam at gmail.com
Fri Aug 15 05:24:29 CEST 2014
From: Fabio Estevam <fabio.estevam at freescale.com>
mx6sxsabresd board has 2 FEC ports, each one connected to a AR8031.
Add support for one FEC port initially.
Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
---
FEC is not functional after this series.
There is still another patch for FEC that I will submit later that makes
FEC functional on mx6solox, but it is orthogonal to this series.
arch/arm/include/asm/arch-mx6/crm_regs.h | 1 +
arch/arm/include/asm/arch-mx6/iomux.h | 10 +++
board/freescale/mx6sxsabresd/mx6sxsabresd.c | 116 ++++++++++++++++++++++++++++
include/configs/mx6sxsabresd.h | 17 ++++
4 files changed, 144 insertions(+)
diff --git a/arch/arm/include/asm/arch-mx6/crm_regs.h b/arch/arm/include/asm/arch-mx6/crm_regs.h
index 9a7fb34..e67b5b9 100644
--- a/arch/arm/include/asm/arch-mx6/crm_regs.h
+++ b/arch/arm/include/asm/arch-mx6/crm_regs.h
@@ -981,6 +981,7 @@ struct mxc_ccm_reg {
#define BM_ANADIG_PLL_ENET_RSVD1 0x7FE00000
#define BF_ANADIG_PLL_ENET_RSVD1(v) \
(((v) << 21) & BM_ANADIG_PLL_ENET_RSVD1)
+#define BM_ANADIG_PLL_ENET_REF_25M_ENABLE 0x00200000
#define BM_ANADIG_PLL_ENET_ENABLE_SATA 0x00100000
#define BM_ANADIG_PLL_ENET_ENABLE_PCIE 0x00080000
#define BM_ANADIG_PLL_ENET_PFD_OFFSET_EN 0x00040000
diff --git a/arch/arm/include/asm/arch-mx6/iomux.h b/arch/arm/include/asm/arch-mx6/iomux.h
index 6a4a632..f54db69 100644
--- a/arch/arm/include/asm/arch-mx6/iomux.h
+++ b/arch/arm/include/asm/arch-mx6/iomux.h
@@ -65,6 +65,16 @@
#define IOMUX_GPR1_FEC_MASK (IOMUX_GPR1_FEC_CLOCK_MUX1_SEL_MASK \
| IOMUX_GPR1_FEC_CLOCK_MUX2_SEL_MASK)
+#define IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK (0x1 << 17)
+#define IOMUX_GPR1_FEC1_CLOCK_MUX2_SEL_MASK (0x1 << 13)
+#define IOMUX_GPR1_FEC1_MASK (IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK \
+ | IOMUX_GPR1_FEC1_CLOCK_MUX2_SEL_MASK)
+
+#define IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK (0x1 << 18)
+#define IOMUX_GPR1_FEC2_CLOCK_MUX2_SEL_MASK (0x1 << 14)
+#define IOMUX_GPR1_FEC2_MASK (IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK \
+ | IOMUX_GPR1_FEC2_CLOCK_MUX2_SEL_MASK)
+
#define IOMUXC_GPR13_SATA_PHY_8_RXEQ_0P5DB (0<<24)
#define IOMUXC_GPR13_SATA_PHY_8_RXEQ_1P0DB (1<<24)
#define IOMUXC_GPR13_SATA_PHY_8_RXEQ_1P5DB (2<<24)
diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
index 6cd2b4a..5eaec1b 100644
--- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
+++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
@@ -7,6 +7,7 @@
*/
#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/mx6-pins.h>
@@ -20,6 +21,8 @@
#include <fsl_esdhc.h>
#include <mmc.h>
#include <i2c.h>
+#include <miiphy.h>
+#include <netdev.h>
#include <power/pmic.h>
#include <power/pfuze100_pmic.h>
@@ -38,6 +41,21 @@ DECLARE_GLOBAL_DATA_PTR;
PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
PAD_CTL_ODE)
+#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE | \
+ PAD_CTL_SPEED_HIGH | \
+ PAD_CTL_DSE_48ohm | PAD_CTL_SRE_FAST)
+
+#define ENET_CLK_PAD_CTRL (PAD_CTL_SPEED_MED | \
+ PAD_CTL_DSE_120ohm | PAD_CTL_SRE_FAST)
+
+#define ENET_RX_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
+ PAD_CTL_SPEED_HIGH | PAD_CTL_SRE_FAST)
+
+#define I2C_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
+ PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
+ PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
+ PAD_CTL_ODE)
+
int dram_init(void)
{
gd->ram_size = PHYS_SDRAM_SIZE;
@@ -60,11 +78,83 @@ static iomux_v3_cfg_t const usdhc4_pads[] = {
MX6_PAD_SD4_DATA7__GPIO6_IO_21 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
+static iomux_v3_cfg_t const fec1_pads[] = {
+ MX6_PAD_ENET1_MDC__ENET1_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET1_MDIO__ENET1_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII1_RX_CTL__ENET1_RX_EN | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+ MX6_PAD_RGMII1_RD0__ENET1_RX_DATA_0 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+ MX6_PAD_RGMII1_RD1__ENET1_RX_DATA_1 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+ MX6_PAD_RGMII1_RD2__ENET1_RX_DATA_2 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+ MX6_PAD_RGMII1_RD3__ENET1_RX_DATA_3 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+ MX6_PAD_RGMII1_RXC__ENET1_RX_CLK | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+ MX6_PAD_RGMII1_TX_CTL__ENET1_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII1_TD0__ENET1_TX_DATA_0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII1_TD1__ENET1_TX_DATA_1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII1_TD2__ENET1_TX_DATA_2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII1_TD3__ENET1_TX_DATA_3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_RGMII1_TXC__ENET1_RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+};
+
+static iomux_v3_cfg_t const peri_3v3_pads[] = {
+ MX6_PAD_QSPI1A_DATA0__GPIO4_IO_16 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+static iomux_v3_cfg_t const phy_control_pads[] = {
+ /* 25MHz Ethernet PHY Clock */
+ MX6_PAD_ENET2_RX_CLK__ENET2_REF_CLK_25M | MUX_PAD_CTRL(ENET_CLK_PAD_CTRL),
+
+ /* ENET PHY Power */
+ MX6_PAD_ENET2_COL__GPIO2_IO_6 | MUX_PAD_CTRL(NO_PAD_CTRL),
+
+ /* AR8031 PHY Reset */
+ MX6_PAD_ENET2_CRS__GPIO2_IO_7 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
static void setup_iomux_uart(void)
{
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
}
+static int setup_fec(void)
+{
+ struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
+ struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
+ int ret;
+ int reg;
+
+ /* Use 125MHz anatop loopback REF_CLK1 for ENET1 */
+ clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC1_MASK, 0);
+
+ imx_iomux_v3_setup_multiple_pads(phy_control_pads,
+ ARRAY_SIZE(phy_control_pads));
+
+ /* Enable the ENET power, active low */
+ gpio_direction_output(IMX_GPIO_NR(2, 6) , 0);
+
+ /* Reset AR8031 PHY */
+ gpio_direction_output(IMX_GPIO_NR(2, 7) , 0);
+ udelay(500);
+ gpio_set_value(IMX_GPIO_NR(2, 7), 1);
+
+ reg = readl(&anatop->pll_enet);
+ reg |= BM_ANADIG_PLL_ENET_REF_25M_ENABLE;
+ writel(reg, &anatop->pll_enet);
+
+ ret = enable_fec_anatop_clock(ENET_125MHz);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+ imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
+ setup_fec();
+
+ return cpu_eth_init(bis);
+}
+
#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
/* I2C1 for PMIC */
struct i2c_pads_info i2c_pad_info1 = {
@@ -131,11 +221,37 @@ static int pfuze_init(void)
return 0;
}
+int board_phy_config(struct phy_device *phydev)
+{
+ /*
+ * Enable 1.8V(SEL_1P5_1P8_POS_REG) on
+ * Phy control debug reg 0
+ */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
+
+ /* rgmii tx clock delay enable */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
+
+ if (phydev->drv->config)
+ phydev->drv->config(phydev);
+
+ return 0;
+}
+
int board_early_init_f(void)
{
setup_iomux_uart();
setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
+ /* Enable PERI_3V3, which is used by SD2, ENET, LVDS, BT */
+ imx_iomux_v3_setup_multiple_pads(peri_3v3_pads,
+ ARRAY_SIZE(peri_3v3_pads));
+
+ /* Active high for ncp692 */
+ gpio_direction_output(IMX_GPIO_NR(4, 16) , 1);
+
return 0;
}
diff --git a/include/configs/mx6sxsabresd.h b/include/configs/mx6sxsabresd.h
index 7967b5d..1eda65e 100644
--- a/include/configs/mx6sxsabresd.h
+++ b/include/configs/mx6sxsabresd.h
@@ -181,6 +181,23 @@
#define CONFIG_POWER_PFUZE100
#define CONFIG_POWER_PFUZE100_I2C_ADDR 0x08
+/* Network */
+#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_MXC_PHYADDR 0x1
+
+#define CONFIG_FEC_XCV_TYPE RGMII
+#define CONFIG_ETHPRIME "FEC"
+
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_ATHEROS
+
/* FLASH and environment organization */
#define CONFIG_SYS_NO_FLASH
--
1.9.1
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