Add PHY reset code for DM_ETH by retrieving phy-reset-gpios and phy-reset-duration in fec node.
Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- drivers/net/fec_mxc.c | 50 +++++++++++++++++++++++++++++++++++++------ drivers/net/fec_mxc.h | 7 ++++++ 2 files changed, 51 insertions(+), 6 deletions(-)
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c index a87f5b6848..0fdad5c5bf 100644 --- a/drivers/net/fec_mxc.c +++ b/drivers/net/fec_mxc.c @@ -16,7 +16,6 @@ #include <net.h> #include <netdev.h> #include <phy.h> -#include "fec_mxc.h"
#include <asm/io.h> #include <linux/errno.h> @@ -25,6 +24,9 @@ #include <asm/arch/clock.h> #include <asm/arch/imx-regs.h> #include <asm/mach-imx/sys_proto.h> +#include <asm-generic/gpio.h> + +#include "fec_mxc.h"
DECLARE_GLOBAL_DATA_PTR;
@@ -1245,6 +1247,33 @@ static int fec_phy_init(struct udevice *dev) return 0; }
+#if defined(CONFIG_DM_GPIO) +static int fec_mdio_reset(struct mii_dev *bus) +{ + struct udevice *dev = bus->priv; + struct fec_priv *priv = dev_get_priv(dev); + int ret; + + if (!dm_gpio_is_valid(&priv->reset_gpio)) + return 0; + + ret = dm_gpio_set_value(&priv->reset_gpio, 1); + if (ret) + return ret; + + if (priv->reset_delay > 20) + mdelay(priv->reset_delay); + else + udelay(priv->reset_delay * 1000); + + ret = dm_gpio_set_value(&priv->reset_gpio, 0); + if (ret) + return ret; + + return 0; +} +#endif + static int fec_mdio_read(struct mii_dev *bus, int addr, int devad, int reg) { struct udevice *dev = bus->priv; @@ -1275,6 +1304,9 @@ static int fec_mdio_init(struct udevice *dev) bus->read = fec_mdio_read; bus->write = fec_mdio_write; snprintf(bus->name, sizeof(bus->name), "%s", dev->name); +#if defined(CONFIG_DM_GPIO) + bus->reset = fec_mdio_reset; +#endif bus->priv = dev;
return mdio_register(bus); @@ -1365,6 +1397,7 @@ static int fecmxc_ofdata_to_platdata(struct udevice *dev) struct eth_pdata *pdata = dev_get_platdata(dev); struct fec_priv *priv = dev_get_priv(dev); const char *phy_mode; + int ret = 0;
pdata->iobase = (phys_addr_t)devfdt_get_addr(dev); priv->eth = (struct ethernet_regs *)pdata->iobase; @@ -1379,12 +1412,17 @@ static int fecmxc_ofdata_to_platdata(struct udevice *dev) return -EINVAL; }
- /* TODO - * Need to get the reset-gpio and related properties from DT - * and implemet the enet reset code on .probe call - */ +#ifdef CONFIG_DM_GPIO + ret = gpio_request_by_name(dev, "phy-reset-gpios", dev->seq, + &priv->reset_gpio, GPIOD_IS_OUT); + if (ret == 0) { + priv->reset_delay = dev_read_u32_default(dev, "phy-reset-duration", 1); + } else if (ret == -ENOENT) { + ret = 0; + } +#endif
- return 0; + return ret; }
static const struct udevice_id fecmxc_ids[] = { diff --git a/drivers/net/fec_mxc.h b/drivers/net/fec_mxc.h index 058341ca4a..ab5935bb83 100644 --- a/drivers/net/fec_mxc.h +++ b/drivers/net/fec_mxc.h @@ -241,6 +241,13 @@ struct fec_priv { int phy_id; int (*mii_postcall)(int); #endif + +#ifdef CONFIG_DM_ETH +# if CONFIG_IS_ENABLED(DM_GPIO) + struct gpio_desc reset_gpio; + uint32_t reset_delay; +# endif +#endif };
void imx_get_mac_from_fuse(int dev_id, unsigned char *mac);