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DaVinci DM6467: Added ET1011C (LSI) PHY support

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Added arch/arm/cpu/arm926ejs/davinci/et1011c.c for handling
ET1011C gigabit phy. which overrides get_link_speed function
from default implementation. This enables output of 125 MHz
reference clock on SYS_CLK pin.

Signed-off-by: Prakash PM <prakash.pm@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
This commit is contained in:
Sandeep Paulraj 2010-12-28 15:43:16 -05:00 committed by Albert Aribaud
parent 2a7d603f37
commit 840f8923a0
4 changed files with 66 additions and 1 deletions
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2
arch/arm/cpu/arm926ejs/davinci/Makefile
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@ -32,7 +32,7 @@ COBJS-$(CONFIG_SOC_DM355) += dm355.o
COBJS-$(CONFIG_SOC_DM365) += dm365.o
COBJS-$(CONFIG_SOC_DM644X) += dm644x.o
COBJS-$(CONFIG_SOC_DM646X) += dm646x.o
COBJS-$(CONFIG_DRIVER_TI_EMAC) += lxt972.o dp83848.o
COBJS-$(CONFIG_DRIVER_TI_EMAC) += lxt972.o dp83848.o et1011c.o
SOBJS = reset.o

55
arch/arm/cpu/arm926ejs/davinci/et1011c.c Normal file
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@ -0,0 +1,55 @@
/*
* LSI ET1011C PHY Driver for TI DaVinci(TMS320DM6467) board.
*
* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <common.h>
#include <net.h>
#include <miiphy.h>
#include <asm/arch/emac_defs.h>
#ifdef CONFIG_DRIVER_TI_EMAC
#ifdef CONFIG_CMD_NET
/* LSI PHYSICAL LAYER TRANSCEIVER ET1011C */
#define MII_PHY_CONFIG_REG 22
/* PHY Config bits */
#define PHY_SYS_CLK_EN (1 << 4)
int et1011c_get_link_speed(int phy_addr)
{
u_int16_t data;
if (davinci_eth_phy_read(phy_addr, MII_STATUS_REG, &data) && (data & 0x04)) {
davinci_eth_phy_read(EMAC_MDIO_PHY_NUM,
MII_PHY_CONFIG_REG, &data);
/* Enable 125MHz clock sourced from PHY */
davinci_eth_phy_write(EMAC_MDIO_PHY_NUM,
MII_PHY_CONFIG_REG,
data | PHY_SYS_CLK_EN);
return (1);
}
return (0);
}
#endif /* CONFIG_CMD_NET */
#endif /* CONFIG_DRIVER_ETHER */

3
arch/arm/include/asm/arch-davinci/emac_defs.h
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@ -389,4 +389,7 @@ int dp83848_get_link_speed(int phy_addr);
int dp83848_init_phy(int phy_addr);
int dp83848_auto_negotiate(int phy_addr);
#define PHY_ET1011C (0x282f013)
int et1011c_get_link_speed(int phy_addr);
#endif /* _DM644X_EMAC_H_ */

7
drivers/net/davinci_emac.c
View File

@ -725,6 +725,13 @@ int davinci_emac_initialize(void)
phy.get_link_speed = dp83848_get_link_speed;
phy.auto_negotiate = dp83848_auto_negotiate;
break;
case PHY_ET1011C:
sprintf(phy.name, "ET1011C @ 0x%02x", active_phy_addr);
phy.init = gen_init_phy;
phy.is_phy_connected = gen_is_phy_connected;
phy.get_link_speed = et1011c_get_link_speed;
phy.auto_negotiate = gen_auto_negotiate;
break;
default:
sprintf(phy.name, "GENERIC @ 0x%02x", active_phy_addr);
phy.init = gen_init_phy;