diff options
Diffstat (limited to 'board/ti/dra7xx/evm.c')
| -rw-r--r-- | board/ti/dra7xx/evm.c | 168 |
1 files changed, 146 insertions, 22 deletions
diff --git a/board/ti/dra7xx/evm.c b/board/ti/dra7xx/evm.c index bf7e091..9a114e2 100644 --- a/board/ti/dra7xx/evm.c +++ b/board/ti/dra7xx/evm.c @@ -8,23 +8,7 @@ * Aneesh V <aneesh@ti.com> * Steve Sakoman <steve@sakoman.com> * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <palmas.h> @@ -39,12 +23,53 @@ #include <asm/ehci-omap.h> #endif +#ifdef CONFIG_DRIVER_TI_CPSW +#include <cpsw.h> +#endif + DECLARE_GLOBAL_DATA_PTR; const struct omap_sysinfo sysinfo = { "Board: DRA7xx\n" }; +/* + * Adjust I/O delays on the Tx control and data lines of each MAC port. This + * is a workaround in order to work properly with the DP83865 PHYs on the EVM. + * In 3COM RGMII mode this PHY applies it's own internal clock delay, so we + * essentially need to counteract the DRA7xx internal delay, and we do this + * by delaying the control and data lines. If not using this PHY, you probably + * don't need to do this stuff! + */ +static void dra7xx_adj_io_delay(const struct io_delay *io_dly) +{ + int i = 0; + u32 reg_val; + u32 delta; + u32 coarse; + u32 fine; + + writel(CFG_IO_DELAY_UNLOCK_KEY, CFG_IO_DELAY_LOCK); + + while(io_dly[i].addr) { + writel(CFG_IO_DELAY_ACCESS_PATTERN & ~CFG_IO_DELAY_LOCK_MASK, + io_dly[i].addr); + delta = io_dly[i].dly; + reg_val = readl(io_dly[i].addr) & 0x3ff; + coarse = ((reg_val >> 5) & 0x1F) + ((delta >> 5) & 0x1F); + coarse = (coarse > 0x1F) ? (0x1F) : (coarse); + fine = (reg_val & 0x1F) + (delta & 0x1F); + fine = (fine > 0x1F) ? (0x1F) : (fine); + reg_val = CFG_IO_DELAY_ACCESS_PATTERN | + CFG_IO_DELAY_LOCK_MASK | + ((coarse << 5) | (fine)); + writel(reg_val, io_dly[i].addr); + i++; + } + + writel(CFG_IO_DELAY_LOCK_KEY, CFG_IO_DELAY_LOCK); +} + /** * @brief board_init * @@ -58,11 +83,6 @@ int board_init(void) return 0; } -int board_eth_init(bd_t *bis) -{ - return 0; -} - /** * @brief misc_init_r - Configure EVM board specific configurations * such as power configurations, ethernet initialization as phase2 of @@ -101,3 +121,107 @@ int board_mmc_init(bd_t *bis) return 0; } #endif + +#ifdef CONFIG_DRIVER_TI_CPSW + +/* Delay value to add to calibrated value */ +#define RGMII0_TXCTL_DLY_VAL ((0x3 << 5) + 0x8) +#define RGMII0_TXD0_DLY_VAL ((0x3 << 5) + 0x8) +#define RGMII0_TXD1_DLY_VAL ((0x3 << 5) + 0x2) +#define RGMII0_TXD2_DLY_VAL ((0x4 << 5) + 0x0) +#define RGMII0_TXD3_DLY_VAL ((0x4 << 5) + 0x0) +#define VIN2A_D13_DLY_VAL ((0x3 << 5) + 0x8) +#define VIN2A_D17_DLY_VAL ((0x3 << 5) + 0x8) +#define VIN2A_D16_DLY_VAL ((0x3 << 5) + 0x2) +#define VIN2A_D15_DLY_VAL ((0x4 << 5) + 0x0) +#define VIN2A_D14_DLY_VAL ((0x4 << 5) + 0x0) + +static void cpsw_control(int enabled) +{ + /* VTP can be added here */ + + return; +} + +static struct cpsw_slave_data cpsw_slaves[] = { + { + .slave_reg_ofs = 0x208, + .sliver_reg_ofs = 0xd80, + .phy_id = 0, + }, + { + .slave_reg_ofs = 0x308, + .sliver_reg_ofs = 0xdc0, + .phy_id = 1, + }, +}; + +static struct cpsw_platform_data cpsw_data = { + .mdio_base = CPSW_MDIO_BASE, + .cpsw_base = CPSW_BASE, + .mdio_div = 0xff, + .channels = 8, + .cpdma_reg_ofs = 0x800, + .slaves = 1, + .slave_data = cpsw_slaves, + .ale_reg_ofs = 0xd00, + .ale_entries = 1024, + .host_port_reg_ofs = 0x108, + .hw_stats_reg_ofs = 0x900, + .bd_ram_ofs = 0x2000, + .mac_control = (1 << 5), + .control = cpsw_control, + .host_port_num = 0, + .version = CPSW_CTRL_VERSION_2, +}; + +int board_eth_init(bd_t *bis) +{ + int ret; + uint8_t mac_addr[6]; + uint32_t mac_hi, mac_lo; + uint32_t ctrl_val; + const struct io_delay io_dly[] = { + {CFG_RGMII0_TXCTL, RGMII0_TXCTL_DLY_VAL}, + {CFG_RGMII0_TXD0, RGMII0_TXD0_DLY_VAL}, + {CFG_RGMII0_TXD1, RGMII0_TXD1_DLY_VAL}, + {CFG_RGMII0_TXD2, RGMII0_TXD2_DLY_VAL}, + {CFG_RGMII0_TXD3, RGMII0_TXD3_DLY_VAL}, + {CFG_VIN2A_D13, VIN2A_D13_DLY_VAL}, + {CFG_VIN2A_D17, VIN2A_D17_DLY_VAL}, + {CFG_VIN2A_D16, VIN2A_D16_DLY_VAL}, + {CFG_VIN2A_D15, VIN2A_D15_DLY_VAL}, + {CFG_VIN2A_D14, VIN2A_D14_DLY_VAL}, + {0} + }; + + /* Adjust IO delay for RGMII tx path */ + dra7xx_adj_io_delay(io_dly); + + /* try reading mac address from efuse */ + mac_lo = readl((*ctrl)->control_core_mac_id_0_lo); + mac_hi = readl((*ctrl)->control_core_mac_id_0_hi); + mac_addr[0] = mac_hi & 0xFF; + mac_addr[1] = (mac_hi & 0xFF00) >> 8; + mac_addr[2] = (mac_hi & 0xFF0000) >> 16; + mac_addr[3] = mac_lo & 0xFF; + mac_addr[4] = (mac_lo & 0xFF00) >> 8; + mac_addr[5] = (mac_lo & 0xFF0000) >> 16; + + if (!getenv("ethaddr")) { + printf("<ethaddr> not set. Validating first E-fuse MAC\n"); + + if (is_valid_ether_addr(mac_addr)) + eth_setenv_enetaddr("ethaddr", mac_addr); + } + ctrl_val = readl((*ctrl)->control_core_control_io1) & (~0x33); + ctrl_val |= 0x22; + writel(ctrl_val, (*ctrl)->control_core_control_io1); + + ret = cpsw_register(&cpsw_data); + if (ret < 0) + printf("Error %d registering CPSW switch\n", ret); + + return ret; +} +#endif |