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Commit a21e282a authored by Vitaly Bordug's avatar Vitaly Bordug Committed by Kumar Gala
Browse files

[POWERPC] fsl_soc: add support to gianfar for fixed-link property 



fixed-link says: register new "Fixed/emulated PHY", i.e. PHY that
not connected to the real MDIO bus.

Signed-off-by: default avatarVitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent e3000765

Documentation/powerpc/booting-without-of.txt

+4 −0
Original line number Diff line number Diff line
@@ -1257,6 +1257,10 @@ platforms are moved over to use the flattened-device-tree model. 
      services interrupts for this device.

    - phy-handle : The phandle for the PHY connected to this ethernet

      controller.

    - fixed-link : <a b c d e> where a is emulated phy id - choose any,

      but unique to the all specified fixed-links, b is duplex - 0 half,

      1 full, c is link speed - d#10/d#100/d#1000, d is pause - 0 no

      pause, 1 pause, e is asym_pause - 0 no asym_pause, 1 asym_pause.



  Recommended properties:

arch/powerpc/sysdev/fsl_soc.c

+62 −17
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
#include <linux/platform_device.h>

#include <linux/of_platform.h>

#include <linux/phy.h>

#include <linux/phy_fixed.h>

#include <linux/spi/spi.h>

#include <linux/fsl_devices.h>

#include <linux/fs_enet_pd.h>
@@ -130,6 +131,37 @@ u32 get_baudrate(void) 
EXPORT_SYMBOL(get_baudrate);

#endif /* CONFIG_CPM2 */



#ifdef CONFIG_FIXED_PHY

static int __init of_add_fixed_phys(void)

{

	int ret;

	struct device_node *np;

	u32 *fixed_link;

	struct fixed_phy_status status = {};



	for_each_node_by_name(np, "ethernet") {

		fixed_link  = (u32 *)of_get_property(np, "fixed-link", NULL);

		if (!fixed_link)

			continue;



		status.link = 1;

		status.duplex = fixed_link[1];

		status.speed = fixed_link[2];

		status.pause = fixed_link[3];

		status.asym_pause = fixed_link[4];



		ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status);

		if (ret) {

			of_node_put(np);

			return ret;

		}

	}



	return 0;

}

arch_initcall(of_add_fixed_phys);

#endif /* CONFIG_FIXED_PHY */



static int __init gfar_mdio_of_init(void)

{

	struct device_node *np = NULL;
@@ -198,7 +230,6 @@ static const char *gfar_tx_intr = "tx"; 
static const char *gfar_rx_intr = "rx";

static const char *gfar_err_intr = "error";





static int __init gfar_of_init(void)

{

	struct device_node *np;
@@ -282,6 +313,19 @@ static int __init gfar_of_init(void) 
			gfar_data.interface = PHY_INTERFACE_MODE_MII;



		ph = of_get_property(np, "phy-handle", NULL);

		if (ph == NULL) {

			u32 *fixed_link;



			fixed_link = (u32 *)of_get_property(np, "fixed-link",

							   NULL);

			if (!fixed_link) {

				ret = -ENODEV;

				goto unreg;

			}



			gfar_data.bus_id = 0;

			gfar_data.phy_id = fixed_link[0];

		} else {

			phy = of_find_node_by_phandle(*ph);



			if (phy == NULL) {
@@ -304,6 +348,7 @@ static int __init gfar_of_init(void) 


			of_node_put(phy);

			of_node_put(mdio);

		}



		ret =

		    platform_device_add_data(gfar_dev, &gfar_data,