From 3d248d37e1a176326ac8bf6a39144076707530e3 Mon Sep 17 00:00:00 2001
From: Ben Gardiner <bengardiner@nanometrics.ca>
Date: Thu, 14 Oct 2010 17:26:29 -0400
Subject: [PATCH] da850evm: basic MII EMAC support

The current da850evm support in u-boot/master omits any use of
the davinci EMAC. This patch adds basic support for the EMAC using
the MII PHY found on the baseboard of the EVM. The MAC address is
read from the environment variable 'ethadd'. Note that this is
different from the da850evm support in the u-boot omapl1 tree
where the MAC address is read from SPI flash.

Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca>
CC: Sandeep Paulraj <s-paulraj@ti.com>
CC: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
CC: Ben Warren <biggerbadderben@gmail.com>
CC: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
---
 board/davinci/da8xxevm/da850evm.c | 49 +++++++++++++++++++++++++++++++
 include/configs/da850evm.h        | 15 ++++++++++
 2 files changed, 64 insertions(+)

diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c
index 0eb9e29ea3..c8c5e1b30e 100644
--- a/board/davinci/da8xxevm/da850evm.c
+++ b/board/davinci/da8xxevm/da850evm.c
@@ -23,8 +23,11 @@
 
 #include <common.h>
 #include <i2c.h>
+#include <net.h>
+#include <netdev.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/emif_defs.h>
+#include <asm/arch/emac_defs.h>
 #include <asm/io.h>
 #include "../common/misc.h"
 #include "common.h"
@@ -49,6 +52,28 @@ static const struct pinmux_config uart_pins[] = {
 	{ pinmux(4), 2, 5 }
 };
 
+#ifdef CONFIG_DRIVER_TI_EMAC
+static const struct pinmux_config emac_pins[] = {
+	{ pinmux(2), 8, 1 },
+	{ pinmux(2), 8, 2 },
+	{ pinmux(2), 8, 3 },
+	{ pinmux(2), 8, 4 },
+	{ pinmux(2), 8, 5 },
+	{ pinmux(2), 8, 6 },
+	{ pinmux(2), 8, 7 },
+	{ pinmux(3), 8, 0 },
+	{ pinmux(3), 8, 1 },
+	{ pinmux(3), 8, 2 },
+	{ pinmux(3), 8, 3 },
+	{ pinmux(3), 8, 4 },
+	{ pinmux(3), 8, 5 },
+	{ pinmux(3), 8, 6 },
+	{ pinmux(3), 8, 7 },
+	{ pinmux(4), 8, 0 },
+	{ pinmux(4), 8, 1 }
+};
+#endif /* CONFIG_DRIVER_TI_EMAC */
+
 /* I2C pin muxer settings */
 static const struct pinmux_config i2c_pins[] = {
 	{ pinmux(4), 2, 2 },
@@ -142,6 +167,14 @@ int board_init(void)
 	if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
 		return 1;
 
+#ifdef CONFIG_DRIVER_TI_EMAC
+	if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0)
+		return 1;
+	/* set cfgchip3 to select MII */
+	writel(readl(&davinci_syscfg_regs->cfgchip3) & ~(1 << 8),
+			     &davinci_syscfg_regs->cfgchip3);
+#endif /* CONFIG_DRIVER_TI_EMAC */
+
 	/* enable the console UART */
 	writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
 		DAVINCI_UART_PWREMU_MGMT_UTRST),
@@ -149,3 +182,19 @@ int board_init(void)
 
 	return 0;
 }
+
+#ifdef CONFIG_DRIVER_TI_EMAC
+
+/*
+ * Initializes on-board ethernet controllers.
+ */
+int board_eth_init(bd_t *bis)
+{
+	if (!davinci_emac_initialize()) {
+		printf("Error: Ethernet init failed!\n");
+		return -1;
+	}
+
+	return 0;
+}
+#endif /* CONFIG_DRIVER_TI_EMAC */
diff --git a/include/configs/da850evm.h b/include/configs/da850evm.h
index 91dc0c68f0..d544c13a6c 100644
--- a/include/configs/da850evm.h
+++ b/include/configs/da850evm.h
@@ -26,6 +26,7 @@
 /*
  * Board
  */
+#define CONFIG_DRIVER_TI_EMAC
 
 /*
  * SoC Configuration
@@ -101,6 +102,20 @@
 #define DEF_BOOTM			""
 #endif
 
+/*
+ * Network & Ethernet Configuration
+ */
+#ifdef CONFIG_DRIVER_TI_EMAC
+#define CONFIG_EMAC_MDIO_PHY_NUM	0
+#define CONFIG_MII
+#define CONFIG_BOOTP_DEFAULT
+#define CONFIG_BOOTP_DNS
+#define CONFIG_BOOTP_DNS2
+#define CONFIG_BOOTP_SEND_HOSTNAME
+#define CONFIG_NET_RETRY_COUNT	10
+#define CONFIG_NET_MULTI
+#endif
+
 /*
  * U-Boot general configuration
  */
-- 
2.30.2