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arm: spear: x600: Add support for Micrel KSZ9031 PHY 

As the old ethernet PHY is not available any more, the x600 board has
been redesigned with the Micrel KSZ9031 PHY. This patch adds support
to autodetect the PHY and configure the Micrel PHY correctly.

Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Stefan Roese 2016-04-27 09:10:42 +02:00
parent 452b3813f9
commit f7c32e8ece
2 changed files with 55 additions and 15 deletions
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68
board/spear/x600/x600.c
View File

@ -8,6 +8,7 @@
*/
#include <common.h>
#include <micrel.h>
#include <nand.h>
#include <netdev.h>
#include <phy.h>
@ -69,27 +70,64 @@ void board_nand_init(void)
int board_phy_config(struct phy_device *phydev)
{
/* Extended PHY control 1, select GMII */
phy_write(phydev, MDIO_DEVAD_NONE, 23, 0x0020);
unsigned short id1, id2;
/* Software reset necessary after GMII mode selction */
phy_reset(phydev);
/* check whether KSZ9031 or AR8035 has to be configured */
id1 = phy_read(phydev, MDIO_DEVAD_NONE, 2);
id2 = phy_read(phydev, MDIO_DEVAD_NONE, 3);
/* Enable extended page register access */
phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0001);
if ((id1 == 0x22) && ((id2 & 0xFFF0) == 0x1620)) {
/* PHY configuration for Micrel KSZ9031 */
printf("PHY KSZ9031 detected - ");
/* 17e: Enhanced LED behavior, needs to be written twice */
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0x09ff);
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0x09ff);
phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, 0x1c00);
/* 16e: Enhanced LED method select */
phy_write(phydev, MDIO_DEVAD_NONE, 16, 0xe0ea);
/* control data pad skew - devaddr = 0x02, register = 0x04 */
ksz9031_phy_extended_write(phydev, 0x02,
MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
0x0000);
/* rx data pad skew - devaddr = 0x02, register = 0x05 */
ksz9031_phy_extended_write(phydev, 0x02,
MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
0x0000);
/* tx data pad skew - devaddr = 0x02, register = 0x05 */
ksz9031_phy_extended_write(phydev, 0x02,
MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
0x0000);
/* gtx and rx clock pad skew - devaddr = 0x02, reg = 0x08 */
ksz9031_phy_extended_write(phydev, 0x02,
MII_KSZ9031_EXT_RGMII_CLOCK_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
0x03FF);
} else {
/* PHY configuration for Vitesse VSC8641 */
printf("PHY VSC8641 detected - ");
/* Disable extended page register access */
phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0000);
/* Extended PHY control 1, select GMII */
phy_write(phydev, MDIO_DEVAD_NONE, 23, 0x0020);
/* Enable clock output pin */
phy_write(phydev, MDIO_DEVAD_NONE, 18, 0x0049);
/* Software reset necessary after GMII mode selction */
phy_reset(phydev);
/* Enable extended page register access */
phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0001);
/* 17e: Enhanced LED behavior, needs to be written twice */
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0x09ff);
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0x09ff);
/* 16e: Enhanced LED method select */
phy_write(phydev, MDIO_DEVAD_NONE, 16, 0xe0ea);
/* Disable extended page register access */
phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0000);
/* Enable clock output pin */
phy_write(phydev, MDIO_DEVAD_NONE, 18, 0x0049);
}
if (phydev->drv->config)
phydev->drv->config(phydev);

2
include/configs/x600.h
View File

@ -80,6 +80,8 @@
#define CONFIG_PHY_RESET_DELAY 10000 /* in usec */
#define CONFIG_PHY_ADDR 0 /* PHY address */
#define CONFIG_PHY_GIGE /* Include GbE speed/duplex detection */
#define CONFIG_PHY_MICREL
#define CONFIG_PHY_MICREL_KSZ9031
#define CONFIG_SPEAR_GPIO