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https://github.com/AsahiLinux/u-boot
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177 lines
4.5 KiB
C
177 lines
4.5 KiB
C
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/*
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* smsc9303.c - routines to initialize SMSC 9303 switch
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*
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* Copyright (c) 2010 BCT Electronic GmbH
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*
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* Licensed under the GPL-2 or later.
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*/
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#include <common.h>
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#include <config.h>
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#include <miiphy.h>
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#include <asm/blackfin.h>
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#include <asm/gpio.h>
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static int smc9303i_write_mii(unsigned char addr, unsigned char reg, unsigned short data)
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{
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const char *devname = miiphy_get_current_dev();
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if (!devname)
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return 0;
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if (miiphy_write(devname, addr, reg, data) != 0)
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return 0;
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return 1;
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}
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static int smc9303i_write_reg(unsigned short reg, unsigned int data)
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{
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const char *devname = miiphy_get_current_dev();
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unsigned char mii_addr = 0x10 | (reg >> 6);
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unsigned char mii_reg = (reg & 0x3c) >> 1;
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if (!devname)
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return 0;
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if (miiphy_write(devname, mii_addr, mii_reg|0, data & 0xffff) != 0)
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return 0;
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if (miiphy_write(devname, mii_addr, mii_reg|1, data >> 16) != 0)
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return 0;
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return 1;
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}
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static int smc9303i_read_reg(unsigned short reg, unsigned int *data)
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{
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const char *devname = miiphy_get_current_dev();
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unsigned char mii_addr = 0x10 | (reg >> 6);
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unsigned char mii_reg = (reg & 0x3c) >> 1;
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unsigned short tmp1, tmp2;
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if (!devname)
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return 0;
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if (miiphy_read(devname, mii_addr, mii_reg|0, &tmp1) != 0)
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return 0;
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if (miiphy_read(devname, mii_addr, mii_reg|1, &tmp2) != 0)
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return 0;
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*data = (tmp2 << 16) | tmp1;
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return 1;
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}
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#if 0
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static int smc9303i_read_mii(unsigned char addr, unsigned char reg, unsigned short *data)
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{
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const char *devname = miiphy_get_current_dev();
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if (!devname)
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return 0;
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if (miiphy_read(devname, addr, reg, data) != 0)
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return 0;
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return 1;
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}
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#endif
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typedef struct {
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unsigned short reg;
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unsigned int value;
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} smsc9303i_config_entry1_t;
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static const smsc9303i_config_entry1_t smsc9303i_config_table1[] =
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{
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{0x1a0, 0x00000006}, /* Port 1 Manual Flow Control Register */
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{0x1a4, 0x00000006}, /* Port 2 Manual Flow Control Register */
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{0x1a8, 0x00000006}, /* Port 0 Manual Flow Control Register */
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};
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typedef struct
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{
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unsigned char addr;
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unsigned char reg;
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unsigned short value;
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} smsc9303i_config_entry2_t;
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static const smsc9303i_config_entry2_t smsc9303i_config_table2[] =
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{
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{0x01, 0x00, 0x0100}, /* Port0 PHY Basic Control Register */
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{0x02, 0x00, 0x1100}, /* Port1 PHY Basic Control Register */
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{0x03, 0x00, 0x1100}, /* Port2 PHY Basic Control Register */
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{0x01, 0x04, 0x0001}, /* Port0 PHY Auto-Negotiation Advertisement Register */
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{0x02, 0x04, 0x2de1}, /* Port1 PHY Auto-Negotiation Advertisement Register */
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{0x03, 0x04, 0x2de1}, /* Port2 PHY Auto-Negotiation Advertisement Register */
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{0x01, 0x11, 0x0000}, /* Port0 PHY Mode Control/Status Register */
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{0x02, 0x11, 0x0000}, /* Port1 PHY Mode Control/Status Register */
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{0x03, 0x11, 0x0000}, /* Port2 PHY Mode Control/Status Register */
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{0x01, 0x12, 0x0021}, /* Port0 PHY Special Modes Register */
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{0x02, 0x12, 0x00e2}, /* Port1 PHY Special Modes Register */
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{0x03, 0x12, 0x00e3}, /* Port2 PHY Special Modes Register */
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{0x01, 0x1b, 0x0000}, /* Port0 PHY Special Control/Status Indication Register */
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{0x02, 0x1b, 0x0000}, /* Port1 PHY Special Control/Status Indication Register */
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{0x03, 0x1b, 0x0000}, /* Port2 PHY Special Control/Status Indication Register */
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{0x01, 0x1e, 0x0000}, /* Port0 PHY Interrupt Source Flags Register */
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{0x02, 0x1e, 0x0000}, /* Port1 PHY Interrupt Source Flags Register */
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{0x03, 0x1e, 0x0000}, /* Port2 PHY Interrupt Source Flags Register */
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};
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int init_smsc9303i_mii(void)
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{
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unsigned int data;
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unsigned int i;
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printf(" reset SMSC LAN9303i\n");
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gpio_request(GPIO_PG10, "smsc9303");
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gpio_direction_output(GPIO_PG10, 0);
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udelay(10000);
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gpio_direction_output(GPIO_PG10, 1);
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udelay(10000);
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gpio_free(GPIO_PG10);
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#if defined(CONFIG_MII_INIT)
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mii_init();
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#endif
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printf(" write SMSC LAN9303i configuration\n");
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if (!smc9303i_read_reg(0x50, &data))
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return 0;
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if ((data >> 16) != 0x9303) {
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/* chip id not found */
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printf(" error identifying SMSC LAN9303i\n");
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return 0;
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}
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for (i = 0; i < ARRAY_SIZE(smsc9303i_config_table1); i++) {
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const smsc9303i_config_entry1_t *entry = &smsc9303i_config_table1[i];
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if (!smc9303i_write_reg(entry->reg, entry->value)) {
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printf(" error writing SMSC LAN9303i configuration\n");
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return 0;
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}
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}
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for (i = 0; i < ARRAY_SIZE(smsc9303i_config_table2); i++) {
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const smsc9303i_config_entry2_t *entry = &smsc9303i_config_table2[i];
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if (!smc9303i_write_mii(entry->addr, entry->reg, entry->value)) {
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printf(" error writing SMSC LAN9303i configuration\n");
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return 0;
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}
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}
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return 1;
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}
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