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>

diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c
index 0eb9e29ea35e2a3b8347bdca391a4b304a41cdab..c8c5e1b30edb5f08fdbb0b5f2c8b3b82ad1e6c04 100644 (file)
--- 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 91dc0c68f0d5f3d3b43c31c58c8e4da919cbe04f..d544c13a6c9ec64003fbce27e030d4b5f7e02a3a 100644 (file)
--- 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
  */