![Sandeep Paulraj](/assets/img/avatar_default.png)
The patch adds Support for EMAC in the DM365 SOC and the DM365 EVM board. Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
/*
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* TI DaVinci DM365 EVM board support
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*
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* Copyright (C) 2009 Texas Instruments Incorporated
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/dma-mapping.h>
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#include <linux/i2c.h>
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#include <linux/io.h>
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#include <linux/clk.h>
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#include <linux/i2c/at24.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <mach/mux.h>
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#include <mach/hardware.h>
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#include <mach/dm365.h>
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#include <mach/psc.h>
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#include <mach/common.h>
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#include <mach/i2c.h>
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#include <linux/i2c.h>
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#include <mach/serial.h>
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#include <mach/common.h>
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#define DM365_EVM_PHY_MASK (0x2)
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#define DM365_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
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static struct at24_platform_data eeprom_info = {
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.byte_len = (256*1024) / 8,
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.page_size = 64,
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.flags = AT24_FLAG_ADDR16,
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.setup = davinci_get_mac_addr,
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.context = (void *)0x7f00,
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};
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static struct i2c_board_info i2c_info[] = {
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{
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I2C_BOARD_INFO("24c256", 0x50),
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.platform_data = &eeprom_info,
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},
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};
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static struct davinci_i2c_platform_data i2c_pdata = {
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.bus_freq = 400 /* kHz */,
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.bus_delay = 0 /* usec */,
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};
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static void dm365evm_emac_configure(void)
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{
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/*
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* EMAC pins are multiplexed with GPIO and UART
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* Further details are available at the DM365 ARM
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* Subsystem Users Guide(sprufg5.pdf) pages 125 - 127
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*/
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davinci_cfg_reg(DM365_EMAC_TX_EN);
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davinci_cfg_reg(DM365_EMAC_TX_CLK);
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davinci_cfg_reg(DM365_EMAC_COL);
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davinci_cfg_reg(DM365_EMAC_TXD3);
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davinci_cfg_reg(DM365_EMAC_TXD2);
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davinci_cfg_reg(DM365_EMAC_TXD1);
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davinci_cfg_reg(DM365_EMAC_TXD0);
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davinci_cfg_reg(DM365_EMAC_RXD3);
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davinci_cfg_reg(DM365_EMAC_RXD2);
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davinci_cfg_reg(DM365_EMAC_RXD1);
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davinci_cfg_reg(DM365_EMAC_RXD0);
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davinci_cfg_reg(DM365_EMAC_RX_CLK);
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davinci_cfg_reg(DM365_EMAC_RX_DV);
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davinci_cfg_reg(DM365_EMAC_RX_ER);
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davinci_cfg_reg(DM365_EMAC_CRS);
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davinci_cfg_reg(DM365_EMAC_MDIO);
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davinci_cfg_reg(DM365_EMAC_MDCLK);
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/*
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* EMAC interrupts are multiplexed with GPIO interrupts
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* Details are available at the DM365 ARM
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* Subsystem Users Guide(sprufg5.pdf) pages 133 - 134
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*/
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davinci_cfg_reg(DM365_INT_EMAC_RXTHRESH);
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davinci_cfg_reg(DM365_INT_EMAC_RXPULSE);
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davinci_cfg_reg(DM365_INT_EMAC_TXPULSE);
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davinci_cfg_reg(DM365_INT_EMAC_MISCPULSE);
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}
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static void __init evm_init_i2c(void)
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{
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davinci_init_i2c(&i2c_pdata);
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i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
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}
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static struct davinci_uart_config uart_config __initdata = {
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.enabled_uarts = (1 << 0),
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};
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static void __init dm365_evm_map_io(void)
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{
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dm365_init();
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}
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static __init void dm365_evm_init(void)
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{
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struct davinci_soc_info *soc_info = &davinci_soc_info;
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evm_init_i2c();
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davinci_serial_init(&uart_config);
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dm365evm_emac_configure();
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soc_info->emac_pdata->phy_mask = DM365_EVM_PHY_MASK;
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soc_info->emac_pdata->mdio_max_freq = DM365_EVM_MDIO_FREQUENCY;
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}
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static __init void dm365_evm_irq_init(void)
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{
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davinci_irq_init();
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}
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MACHINE_START(DAVINCI_DM365_EVM, "DaVinci DM365 EVM")
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.phys_io = IO_PHYS,
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.io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
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.boot_params = (0x80000100),
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.map_io = dm365_evm_map_io,
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.init_irq = dm365_evm_irq_init,
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.timer = &davinci_timer,
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.init_machine = dm365_evm_init,
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MACHINE_END
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