diff options
Diffstat (limited to 'board/bct-brettl2/smsc9303.c')
| -rw-r--r-- | board/bct-brettl2/smsc9303.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/board/bct-brettl2/smsc9303.c b/board/bct-brettl2/smsc9303.c new file mode 100644 index 0000000..15eea7a --- /dev/null +++ b/board/bct-brettl2/smsc9303.c @@ -0,0 +1,176 @@ +/* + * smsc9303.c - routines to initialize SMSC 9303 switch + * + * Copyright (c) 2010 BCT Electronic GmbH + * + * Licensed under the GPL-2 or later. + */ + +#include <common.h> +#include <config.h> +#include <miiphy.h> + +#include <asm/blackfin.h> +#include <asm/gpio.h> + +static int smc9303i_write_mii(unsigned char addr, unsigned char reg, unsigned short data) +{ + const char *devname = miiphy_get_current_dev(); + + if (!devname) + return 0; + + if (miiphy_write(devname, addr, reg, data) != 0) + return 0; + + return 1; +} + +static int smc9303i_write_reg(unsigned short reg, unsigned int data) +{ + const char *devname = miiphy_get_current_dev(); + unsigned char mii_addr = 0x10 | (reg >> 6); + unsigned char mii_reg = (reg & 0x3c) >> 1; + + if (!devname) + return 0; + + if (miiphy_write(devname, mii_addr, mii_reg|0, data & 0xffff) != 0) + return 0; + + if (miiphy_write(devname, mii_addr, mii_reg|1, data >> 16) != 0) + return 0; + + return 1; +} + +static int smc9303i_read_reg(unsigned short reg, unsigned int *data) +{ + const char *devname = miiphy_get_current_dev(); + unsigned char mii_addr = 0x10 | (reg >> 6); + unsigned char mii_reg = (reg & 0x3c) >> 1; + unsigned short tmp1, tmp2; + + if (!devname) + return 0; + + if (miiphy_read(devname, mii_addr, mii_reg|0, &tmp1) != 0) + return 0; + + if (miiphy_read(devname, mii_addr, mii_reg|1, &tmp2) != 0) + return 0; + + *data = (tmp2 << 16) | tmp1; + + return 1; +} + +#if 0 +static int smc9303i_read_mii(unsigned char addr, unsigned char reg, unsigned short *data) +{ + const char *devname = miiphy_get_current_dev(); + + if (!devname) + return 0; + + if (miiphy_read(devname, addr, reg, data) != 0) + return 0; + + return 1; +} +#endif + +typedef struct { + unsigned short reg; + unsigned int value; +} smsc9303i_config_entry1_t; + +static const smsc9303i_config_entry1_t smsc9303i_config_table1[] = +{ + {0x1a0, 0x00000006}, /* Port 1 Manual Flow Control Register */ + {0x1a4, 0x00000006}, /* Port 2 Manual Flow Control Register */ + {0x1a8, 0x00000006}, /* Port 0 Manual Flow Control Register */ +}; + +typedef struct +{ + unsigned char addr; + unsigned char reg; + unsigned short value; +} smsc9303i_config_entry2_t; + +static const smsc9303i_config_entry2_t smsc9303i_config_table2[] = +{ + {0x01, 0x00, 0x0100}, /* Port0 PHY Basic Control Register */ + {0x02, 0x00, 0x1100}, /* Port1 PHY Basic Control Register */ + {0x03, 0x00, 0x1100}, /* Port2 PHY Basic Control Register */ + + {0x01, 0x04, 0x0001}, /* Port0 PHY Auto-Negotiation Advertisement Register */ + {0x02, 0x04, 0x2de1}, /* Port1 PHY Auto-Negotiation Advertisement Register */ + {0x03, 0x04, 0x2de1}, /* Port2 PHY Auto-Negotiation Advertisement Register */ + + {0x01, 0x11, 0x0000}, /* Port0 PHY Mode Control/Status Register */ + {0x02, 0x11, 0x0000}, /* Port1 PHY Mode Control/Status Register */ + {0x03, 0x11, 0x0000}, /* Port2 PHY Mode Control/Status Register */ + + {0x01, 0x12, 0x0021}, /* Port0 PHY Special Modes Register */ + {0x02, 0x12, 0x00e2}, /* Port1 PHY Special Modes Register */ + {0x03, 0x12, 0x00e3}, /* Port2 PHY Special Modes Register */ + {0x01, 0x1b, 0x0000}, /* Port0 PHY Special Control/Status Indication Register */ + {0x02, 0x1b, 0x0000}, /* Port1 PHY Special Control/Status Indication Register */ + {0x03, 0x1b, 0x0000}, /* Port2 PHY Special Control/Status Indication Register */ + {0x01, 0x1e, 0x0000}, /* Port0 PHY Interrupt Source Flags Register */ + {0x02, 0x1e, 0x0000}, /* Port1 PHY Interrupt Source Flags Register */ + {0x03, 0x1e, 0x0000}, /* Port2 PHY Interrupt Source Flags Register */ +}; + +int init_smsc9303i_mii(void) +{ + unsigned int data; + unsigned int i; + + printf(" reset SMSC LAN9303i\n"); + + gpio_request(GPIO_PG10, "smsc9303"); + gpio_direction_output(GPIO_PG10, 0); + udelay(10000); + gpio_direction_output(GPIO_PG10, 1); + udelay(10000); + + gpio_free(GPIO_PG10); + +#if defined(CONFIG_MII_INIT) + mii_init(); +#endif + + printf(" write SMSC LAN9303i configuration\n"); + + if (!smc9303i_read_reg(0x50, &data)) + return 0; + + if ((data >> 16) != 0x9303) { + /* chip id not found */ + printf(" error identifying SMSC LAN9303i\n"); + return 0; + } + + for (i = 0; i < ARRAY_SIZE(smsc9303i_config_table1); i++) { + const smsc9303i_config_entry1_t *entry = &smsc9303i_config_table1[i]; + + if (!smc9303i_write_reg(entry->reg, entry->value)) { + printf(" error writing SMSC LAN9303i configuration\n"); + return 0; + } + } + + for (i = 0; i < ARRAY_SIZE(smsc9303i_config_table2); i++) { + const smsc9303i_config_entry2_t *entry = &smsc9303i_config_table2[i]; + + if (!smc9303i_write_mii(entry->addr, entry->reg, entry->value)) { + printf(" error writing SMSC LAN9303i configuration\n"); + return 0; + } + } + + return 1; +} |