On Tue, 18 Sep 2012 14:08:50 -0300
Fabio Estevam <fabio.este...@freescale.com> wrote:
> Add Ethernet support.
>
> Signed-off-by: Fabio Estevam <fabio.este...@freescale.com>
> ---
> As far as I can see mx6qarm2 and mx6qsabresd has the same circuitry related to
> AR8031 Ethernet PHY.
>
> However, with this patch I still get 25MHz instead of 125MHz in the AR8031
> CLKO
> pin and Ethernet is not functional.
>
> Any ideas are appreciated.
I managed to get it working a while back, at least on 1Gb links.
The following hack is based on the original version of your sabresd
support patch and the fsl bsp's. AFAICT, the largest difference is
how it taps into PHYLIB for some phy config stuff:
>From aaf4a8ff113d662a4c750d686be07c4bb54ec7d0 Mon Sep 17 00:00:00 2001
From: Kim Phillips <kim.phill...@freescale.com>
Date: Thu, 26 Jul 2012 14:09:03 -0500
Subject: [HACK] sabresd: add ethernet support
---
board/freescale/mx6qsabresd/mx6qsabresd.c | 119 ++++++++++++++++++++++++++++++
include/configs/mx6qsabresd.h | 23 ++++++
2 files changed, 142 insertions(+)
diff --git a/board/freescale/mx6qsabresd/mx6qsabresd.c
b/board/freescale/mx6qsabresd/mx6qsabresd.c
index 4382373..e90508f 100644
--- a/board/freescale/mx6qsabresd/mx6qsabresd.c
+++ b/board/freescale/mx6qsabresd/mx6qsabresd.c
@@ -26,6 +26,9 @@
#include <asm/gpio.h>
#include <mmc.h>
#include <fsl_esdhc.h>
+#include <micrel.h>
+#include <miiphy.h>
+#include <netdev.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -37,6 +40,10 @@ DECLARE_GLOBAL_DATA_PTR;
PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \
PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
+#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);
@@ -59,6 +66,60 @@ iomux_v3_cfg_t usdhc3_pads[] = {
MX6Q_PAD_NANDF_D0__GPIO_2_0 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
};
+iomux_v3_cfg_t enet_pads1[] = {
+ MX6Q_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_RGMII_TXC__ENET_RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_RGMII_TD0__ENET_RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_RGMII_TD1__ENET_RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_RGMII_TD2__ENET_RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_RGMII_TD3__ENET_RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ /* pin 35 - 1 (PHY_AD2) on reset */
+ MX6Q_PAD_RGMII_RXC__GPIO_6_30 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ /* pin 32 - 1 - (MODE0) all */
+ MX6Q_PAD_RGMII_RD0__GPIO_6_25 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ /* pin 31 - 1 - (MODE1) all */
+ MX6Q_PAD_RGMII_RD1__GPIO_6_27 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ /* pin 28 - 1 - (MODE2) all */
+ MX6Q_PAD_RGMII_RD2__GPIO_6_28 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ /* pin 27 - 1 - (MODE3) all */
+ MX6Q_PAD_RGMII_RD3__GPIO_6_29 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ /* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
+ MX6Q_PAD_RGMII_RX_CTL__GPIO_6_24 | MUX_PAD_CTRL(NO_PAD_CTRL),
+ /* pin 42 PHY nRST */
+ MX6Q_PAD_EIM_D23__GPIO_3_23 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+iomux_v3_cfg_t enet_pads2[] = {
+ MX6Q_PAD_RGMII_RXC__ENET_RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_RGMII_RD0__ENET_RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_RGMII_RD1__ENET_RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_RGMII_RD2__ENET_RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_RGMII_RD3__ENET_RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6Q_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
+};
+
+
+static void setup_iomux_enet(void)
+{
+ gpio_direction_output(87, 0); /* GPIO 3-23 */
+ gpio_direction_output(190, 1); /* GPIO 6-30 */
+ gpio_direction_output(185, 1); /* GPIO 6-25 */
+ gpio_direction_output(187, 1); /* GPIO 6-27 */
+ gpio_direction_output(188, 1); /* GPIO 6-28*/
+ gpio_direction_output(189, 1); /* GPIO 6-29 */
+ imx_iomux_v3_setup_multiple_pads(enet_pads1, ARRAY_SIZE(enet_pads1));
+ gpio_direction_output(184, 1); /* GPIO 6-24 */
+
+ /* Need delay 10ms according to KSZ9021 spec */
+ udelay(1000 * 10);
+ gpio_set_value(87, 1); /* GPIO 3-23 */
+
+ imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2));
+}
+
static void setup_iomux_uart(void)
{
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
@@ -83,6 +144,64 @@ int board_mmc_init(bd_t *bis)
}
#endif
+int mx6_rgmii_rework(struct phy_device *phydev)
+{
+ unsigned short 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)
+{
+
+#if 0 /* from upstream sabrelite */
+ /* min rx data delay */
+ ksz9021_phy_extended_write(phydev,
+ MII_KSZ9021_EXT_RGMII_RX_DATA_SKEW, 0x0);
+ /* min tx data delay */
+ ksz9021_phy_extended_write(phydev,
+ MII_KSZ9021_EXT_RGMII_TX_DATA_SKEW, 0x0);
+ /* max rx/tx clock delay, min rx/tx control */
+ ksz9021_phy_extended_write(phydev,
+ MII_KSZ9021_EXT_RGMII_CLOCK_SKEW, 0xf0f0);
+#else
+ mx6_rgmii_rework(phydev);
+#endif
+ if (phydev->drv->config)
+ phydev->drv->config(phydev);
+
+ 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 0;
+}
+
u32 get_board_rev(void)
{
return 0x63000 ;
diff --git a/include/configs/mx6qsabresd.h b/include/configs/mx6qsabresd.h
index 0afb815..bd26170 100644
--- a/include/configs/mx6qsabresd.h
+++ b/include/configs/mx6qsabresd.h
@@ -42,6 +42,14 @@
#define CONFIG_MXC_UART
#define CONFIG_MXC_UART_BASE UART1_BASE
+/* I2C Configs */
+#define CONFIG_CMD_I2C
+#define CONFIG_HARD_I2C
+#define CONFIG_I2C_MXC
+#define CONFIG_SYS_I2C_BASE I2C3_BASE_ADDR
+#define CONFIG_SYS_I2C_SPEED 100000
+#define CONFIG_SYS_I2C_SLAVE 0xfe
+
/* MMC Configs */
#define CONFIG_FSL_ESDHC
#define CONFIG_FSL_USDHC
@@ -55,6 +63,21 @@
#define CONFIG_CMD_FAT
#define CONFIG_DOS_PARTITION
+#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 RGMII
+#define CONFIG_ETHPRIME "FEC"
+#define CONFIG_FEC_MXC_PHYADDR 1
+
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_MICREL
+#define CONFIG_PHY_MICREL_KSZ9021
+
/* allow to overwrite serial and ethaddr */
#define CONFIG_ENV_OVERWRITE
#define CONFIG_CONS_INDEX 1
--
1.7.12
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