[U-Boot] [PATCH 10/11] omap3: cm-t3517: add Ethernet support

Igor Grinberg
2014-11-03T09:32:26Z

Add both EMAC and SMC911x support.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
---
board/compulab/cm_t3517/cm_t3517.c | 89 ++++++++++++++++++++++++++++++++++++++
board/compulab/cm_t3517/mux.c | 19 ++++++++
include/configs/cm_t3517.h | 11 +++++
3 files changed, 119 insertions(+)

diff --git a/board/compulab/cm_t3517/cm_t3517.c b/board/compulab/cm_t3517/cm_t3517.c
index 6abecc2..cac1ad9 100644
--- a/board/compulab/cm_t3517/cm_t3517.c
+++ b/board/compulab/cm_t3517/cm_t3517.c
@@ -8,6 +8,8 @@

#include <common.h>
#include <status_led.h>
+#include <net.h>
+#include <netdev.h>
#include <usb.h>
#include <mmc.h>
#include <linux/compiler.h>
@@ -23,6 +25,7 @@
#include <asm/ehci-omap.h>

#include "../common/common.h"
+#include "../common/eeprom.h"

DECLARE_GLOBAL_DATA_PTR;

@@ -113,6 +116,92 @@ int board_mmc_init(bd_t *bis)
}
#endif

+#ifdef CONFIG_DRIVER_TI_EMAC
+#define CONTROL_EFUSE_EMAC_LSB 0x48002380
+#define CONTROL_EFUSE_EMAC_MSB 0x48002384
+
+static int am3517_get_efuse_enetaddr(u8 *enetaddr)
+{
+ u32 lsb = __raw_readl(CONTROL_EFUSE_EMAC_LSB);
+ u32 msb = __raw_readl(CONTROL_EFUSE_EMAC_MSB);
+
+ enetaddr[0] = (u8)((msb >> 16) & 0xff);
+ enetaddr[1] = (u8)((msb >> 8) & 0xff);
+ enetaddr[2] = (u8)(msb & 0xff);
+ enetaddr[3] = (u8)((lsb >> 16) & 0xff);
+ enetaddr[4] = (u8)((lsb >> 8) & 0xff);
+ enetaddr[5] = (u8)(lsb & 0xff);
+
+ return is_valid_ether_addr(enetaddr);
+}
+
+static inline int cm_t3517_init_emac(bd_t *bis)
+{
+ int ret = cpu_eth_init(bis);
+
+ if (ret > 0)
+ return ret;
+
+ printf("Failed initializing EMAC! ");
+ return 0;
+}
+#else /* !CONFIG_DRIVER_TI_EMAC */
+static inline int am3517_get_efuse_enetaddr(u8 *enetaddr) { return 1; }
+static inline int cm_t3517_init_emac(bd_t *bis) { return 0; }
+#endif /* CONFIG_DRIVER_TI_EMAC */
+
+/*
+ * Routine: handle_mac_address
+ * Description: prepare MAC address for on-board Ethernet.
+ */
+static int cm_t3517_handle_mac_address(void)
+{
+ unsigned char enetaddr[6];
+ int ret;
+
+ ret = eth_getenv_enetaddr("ethaddr", enetaddr);
+ if (ret)
+ return 0;
+
+ ret = cl_eeprom_read_mac_addr(enetaddr);
+ if (ret) {
+ ret = am3517_get_efuse_enetaddr(enetaddr);
+ if (ret)
+ return ret;
+ }
+
+ if (!is_valid_ether_addr(enetaddr))
+ return -1;
+
+ return eth_setenv_enetaddr("ethaddr", enetaddr);
+}
+
+#define SB_T35_ETH_RST_GPIO 164
+
+/*
+ * Routine: board_eth_init
+ * Description: initialize module and base-board Ethernet chips
+ */
+int board_eth_init(bd_t *bis)
+{
+ int rc = 0, rc1 = 0;
+
+ rc1 = cm_t3517_handle_mac_address();
+ if (rc1)
+ printf("No MAC address found! ");
+
+ rc1 = cm_t3517_init_emac(bis);
+ if (rc1 > 0)
+ rc++;
+
+ rc1 = cl_omap3_smc911x_init(0, 4, CONFIG_SMC911X_BASE,
+ NULL, SB_T35_ETH_RST_GPIO);
+ if (rc1 > 0)
+ rc++;
+
+ return rc;
+}
+
#ifdef CONFIG_USB_EHCI_OMAP
static struct omap_usbhs_board_data cm_t3517_usbhs_bdata = {
.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
diff --git a/board/compulab/cm_t3517/mux.c b/board/compulab/cm_t3517/mux.c
index e1575a6..cb54c2c 100644
--- a/board/compulab/cm_t3517/mux.c
+++ b/board/compulab/cm_t3517/mux.c
@@ -83,6 +83,9 @@ void set_muxconf_regs(void)
MUX_VAL(CP(GPMC_D15), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_NCS0), (IDIS | PTU | EN | M0));

+ /* SB-T35 Ethernet */
+ MUX_VAL(CP(GPMC_NCS4), (IEN | PTU | EN | M0));
+
/* SB-T35 SD/MMC WP GPIO59 */
MUX_VAL(CP(GPMC_CLK), (IEN | PTU | EN | M4)); /*GPIO_59*/
MUX_VAL(CP(GPMC_NWE), (IDIS | PTD | DIS | M0));
@@ -93,12 +96,16 @@ void set_muxconf_regs(void)
MUX_VAL(CP(GPMC_NBE1), (IDIS | PTU | EN | M4)); /*GPIO_61*/
MUX_VAL(CP(GPMC_NWP), (IEN | PTD | DIS | M0));
MUX_VAL(CP(GPMC_WAIT0), (IEN | PTU | EN | M0));
+ /* SB-T35 Ethernet IRQ GPIO65 */
+ MUX_VAL(CP(GPMC_WAIT3), (IEN | PTU | EN | M4)); /*GPIO_65*/

/* UART3 Console */
MUX_VAL(CP(UART3_RX_IRRX), (IEN | PTD | DIS | M0));
MUX_VAL(CP(UART3_TX_IRTX), (IDIS | PTD | DIS | M0));
/* RTC V3020 nCS GPIO163 */
MUX_VAL(CP(UART3_CTS_RCTX), (IEN | PTU | EN | M4)); /*GPIO_163*/
+ /* SB-T35 Ethernet nRESET GPIO164 */
+ MUX_VAL(CP(UART3_RTS_SD), (IDIS | PTU | EN | M4)); /*GPIO_164*/

/* SB-T35 SD/MMC CD GPIO144 */
MUX_VAL(CP(UART2_CTS), (IEN | PTU | EN | M4)); /*GPIO_144*/
@@ -128,6 +135,18 @@ void set_muxconf_regs(void)
/* CM-T3517 USB HUB Reset GPIO152 */
MUX_VAL(CP(MCBSP4_CLKX), (IDIS | PTD | DIS | M4)); /*GPIO_152*/

+ /* RMII */
+ MUX_VAL(CP(RMII_MDIO_DATA), (IEN | PTU | EN | M0));
+ MUX_VAL(CP(RMII_MDIO_CLK), (M0));
+ MUX_VAL(CP(RMII_RXD0), (IEN | PTD | DIS | M0));
+ MUX_VAL(CP(RMII_RXD1), (IEN | PTD | DIS | M0));
+ MUX_VAL(CP(RMII_CRS_DV), (IEN | PTD | DIS | M0));
+ MUX_VAL(CP(RMII_RXER), (IEN | PTD | DIS | M0));
+ MUX_VAL(CP(RMII_TXD0), (IDIS | M0));
+ MUX_VAL(CP(RMII_TXD1), (IDIS | M0));
+ MUX_VAL(CP(RMII_TXEN), (IDIS | M0));
+ MUX_VAL(CP(RMII_50MHZ_CLK), (IEN | PTU | DIS | M0));
+
/* Green LED GPIO186 */
MUX_VAL(CP(SYS_CLKOUT2), (IDIS | PTU | DIS | M4)); /*GPIO_186*/

diff --git a/include/configs/cm_t3517.h b/include/configs/cm_t3517.h
index 1c2d1f4..1d35df9 100644
--- a/include/configs/cm_t3517.h
+++ b/include/configs/cm_t3517.h
@@ -132,6 +132,8 @@
#define CONFIG_CMD_I2C /* I2C serial bus support */
#define CONFIG_CMD_MMC /* MMC support */
#define CONFIG_CMD_NAND /* NAND support */
+#define CONFIG_CMD_DHCP
+#define CONFIG_CMD_PING
#define CONFIG_CMD_GPIO

#undef CONFIG_CMD_FLASH /* flinfo, erase, protect */
@@ -272,6 +274,15 @@
#define CONFIG_ENV_OFFSET SMNAND_ENV_OFFSET
#define CONFIG_ENV_ADDR SMNAND_ENV_OFFSET

+#if defined(CONFIG_CMD_NET)
+#define CONFIG_DRIVER_TI_EMAC
+#define CONFIG_DRIVER_TI_EMAC_USE_RMII
+#define CONFIG_MII
+#define CONFIG_SMC911X
+#define CONFIG_SMC911X_32_BIT
+#define CONFIG_SMC911X_BASE (0x2C000000 + (16 << 20))
+#endif /* CONFIG_CMD_NET */
+
/* additions for new relocation code, must be added to all boards */
#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1
#define CONFIG_SYS_INIT_RAM_ADDR 0x4020f800
--
2.0.4