DaVinci DM6467: Added ET1011C (LSI) PHY support

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>

diff --git a/arch/arm/cpu/arm926ejs/davinci/Makefile b/arch/arm/cpu/arm926ejs/davinci/Makefile
index 4eb1d876eafd8e14478114c79255555a327c1322..3183e6a6567ba5968925a353cc08e2a313645df2 100644 (file)
--- a/arch/arm/cpu/arm926ejs/davinci/Makefile
+++ b/arch/arm/cpu/arm926ejs/davinci/Makefile
@@ -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
 

diff --git a/arch/arm/cpu/arm926ejs/davinci/et1011c.c b/arch/arm/cpu/arm926ejs/davinci/et1011c.c
new file mode 100644 (file)
index 0000000..da07345
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/davinci/et1011c.c
@@ -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 */

diff --git a/arch/arm/include/asm/arch-davinci/emac_defs.h b/arch/arm/include/asm/arch-davinci/emac_defs.h
index 76493a138a40fc3af69f6ac2f8c89da35d7b150d..4a4ee04229f8116da510446bed0cb9c960118046 100644 (file)
--- a/arch/arm/include/asm/arch-davinci/emac_defs.h
+++ b/arch/arm/include/asm/arch-davinci/emac_defs.h
@@ -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_ */

diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index 2067a54a88f0e87e21659112e101d86e710977ff..c359f54f9df8040249ef50ec5c9c4e3c8534bcc8 100644 (file)
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -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;