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eth: dm: fec: Add gpio phy reset binding 

Add the missing gpio phy reset binding to the gpio and
reset time configuration

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Michael Trimarchi 2018-06-17 15:22:39 +02:00 committed by Stefano Babic
parent 824705d53c
commit efd0b79106
2 changed files with 41 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/net/fec_mxc.c
View File

@ -15,7 +15,6 @@
#include <miiphy.h>
#include <net.h>
#include <netdev.h>
#include "fec_mxc.h"
#include <asm/io.h>
#include <linux/errno.h>
@ -24,6 +23,9 @@
#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 +1247,19 @@ static int fec_phy_init(struct fec_priv *priv, struct udevice *dev)
return 0;
}
#ifdef CONFIG_DM_GPIO
/* FEC GPIO reset */
static void fec_gpio_reset(struct fec_priv *priv)
{
debug("fec_gpio_reset: fec_gpio_reset(dev)\n");
if (dm_gpio_is_valid(&priv->phy_reset_gpio)) {
dm_gpio_set_value(&priv->phy_reset_gpio, 1);
udelay(priv->reset_delay);
dm_gpio_set_value(&priv->phy_reset_gpio, 0);
}
}
#endif
static int fecmxc_probe(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_platdata(dev);
@ -1257,6 +1272,9 @@ static int fecmxc_probe(struct udevice *dev)
if (ret)
return ret;
#ifdef CONFIG_DM_GPIO
fec_gpio_reset(priv);
#endif
/* Reset chip. */
writel(readl(&priv->eth->ecntrl) | FEC_ECNTRL_RESET,
&priv->eth->ecntrl);
@ -1314,6 +1332,7 @@ static int fecmxc_remove(struct udevice *dev)
static int fecmxc_ofdata_to_platdata(struct udevice *dev)
{
int ret = 0;
struct eth_pdata *pdata = dev_get_platdata(dev);
struct fec_priv *priv = dev_get_priv(dev);
const char *phy_mode;
@ -1331,12 +1350,24 @@ 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", 0,
&priv->phy_reset_gpio, GPIOD_IS_OUT);
if (ret == 0) {
ret = dev_read_u32_array(dev, "phy-reset-duration",
&priv->reset_delay, 1);
} else if (ret == -ENOENT) {
priv->reset_delay = 1000;
ret = 0;
}
return 0;
if (priv->reset_delay > 1000) {
printf("FEX MXC: gpio reset timeout should be less the 1000\n");
priv->reset_delay = 1000;
}
#endif
return ret;
}
static const struct udevice_id fecmxc_ids[] = {

5
drivers/net/fec_mxc.h
View File

@ -250,7 +250,10 @@ struct fec_priv {
int phy_id;
int (*mii_postcall)(int);
#endif
#ifdef CONFIG_DM_GPIO
struct gpio_desc phy_reset_gpio;
uint32_t reset_delay;
#endif
#ifdef CONFIG_DM_ETH
u32 interface;
#endif