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davinci: dm365: EMAC support for SoC and dm365 EVM 

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>
This commit is contained in:
Sandeep Paulraj 2009-06-20 12:23:39 -04:00 committed by Kevin Hilman
parent 9f51315383
commit 8ed0a9d4e7
2 changed files with 122 additions and 2 deletions
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66
arch/arm/mach-davinci/board-dm365-evm.c
View File

@ -19,12 +19,12 @@
#include <linux/i2c.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/i2c/at24.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/mux.h>
#include <mach/hardware.h>
#include <mach/dm365.h>
#include <mach/psc.h>
@ -34,14 +34,69 @@
#include <mach/serial.h>
#include <mach/common.h>
#define DM365_EVM_PHY_MASK (0x2)
#define DM365_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
static struct at24_platform_data eeprom_info = {
.byte_len = (256*1024) / 8,
.page_size = 64,
.flags = AT24_FLAG_ADDR16,
.setup = davinci_get_mac_addr,
.context = (void *)0x7f00,
};
static struct i2c_board_info i2c_info[] = {
{
I2C_BOARD_INFO("24c256", 0x50),
.platform_data = &eeprom_info,
},
};
static struct davinci_i2c_platform_data i2c_pdata = {
.bus_freq = 400 /* kHz */,
.bus_delay = 0 /* usec */,
};
static void dm365evm_emac_configure(void)
{
/*
* EMAC pins are multiplexed with GPIO and UART
* Further details are available at the DM365 ARM
* Subsystem Users Guide(sprufg5.pdf) pages 125 - 127
*/
davinci_cfg_reg(DM365_EMAC_TX_EN);
davinci_cfg_reg(DM365_EMAC_TX_CLK);
davinci_cfg_reg(DM365_EMAC_COL);
davinci_cfg_reg(DM365_EMAC_TXD3);
davinci_cfg_reg(DM365_EMAC_TXD2);
davinci_cfg_reg(DM365_EMAC_TXD1);
davinci_cfg_reg(DM365_EMAC_TXD0);
davinci_cfg_reg(DM365_EMAC_RXD3);
davinci_cfg_reg(DM365_EMAC_RXD2);
davinci_cfg_reg(DM365_EMAC_RXD1);
davinci_cfg_reg(DM365_EMAC_RXD0);
davinci_cfg_reg(DM365_EMAC_RX_CLK);
davinci_cfg_reg(DM365_EMAC_RX_DV);
davinci_cfg_reg(DM365_EMAC_RX_ER);
davinci_cfg_reg(DM365_EMAC_CRS);
davinci_cfg_reg(DM365_EMAC_MDIO);
davinci_cfg_reg(DM365_EMAC_MDCLK);
/*
* EMAC interrupts are multiplexed with GPIO interrupts
* Details are available at the DM365 ARM
* Subsystem Users Guide(sprufg5.pdf) pages 133 - 134
*/
davinci_cfg_reg(DM365_INT_EMAC_RXTHRESH);
davinci_cfg_reg(DM365_INT_EMAC_RXPULSE);
davinci_cfg_reg(DM365_INT_EMAC_TXPULSE);
davinci_cfg_reg(DM365_INT_EMAC_MISCPULSE);
}
static void __init evm_init_i2c(void)
{
davinci_init_i2c(&i2c_pdata);
i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
}
static struct davinci_uart_config uart_config __initdata = {
@ -55,8 +110,15 @@ static void __init dm365_evm_map_io(void)
static __init void dm365_evm_init(void)
{
struct davinci_soc_info *soc_info = &davinci_soc_info;
evm_init_i2c();
davinci_serial_init(&uart_config);
dm365evm_emac_configure();
soc_info->emac_pdata->phy_mask = DM365_EVM_PHY_MASK;
soc_info->emac_pdata->mdio_max_freq = DM365_EVM_MDIO_FREQUENCY;
}
static __init void dm365_evm_irq_init(void)

58
arch/arm/mach-davinci/dm365.c
View File

@ -546,6 +546,52 @@ INT_CFG(DM365, INT_EMAC_MISCPULSE, 17, 1, 1, false)
#endif
};
static struct emac_platform_data dm365_emac_pdata = {
.ctrl_reg_offset = DM365_EMAC_CNTRL_OFFSET,
.ctrl_mod_reg_offset = DM365_EMAC_CNTRL_MOD_OFFSET,
.ctrl_ram_offset = DM365_EMAC_CNTRL_RAM_OFFSET,
.mdio_reg_offset = DM365_EMAC_MDIO_OFFSET,
.ctrl_ram_size = DM365_EMAC_CNTRL_RAM_SIZE,
.version = EMAC_VERSION_2,
};
static struct resource dm365_emac_resources[] = {
{
.start = DM365_EMAC_BASE,
.end = DM365_EMAC_BASE + 0x47ff,
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_DM365_EMAC_RXTHRESH,
.end = IRQ_DM365_EMAC_RXTHRESH,
.flags = IORESOURCE_IRQ,
},
{
.start = IRQ_DM365_EMAC_RXPULSE,
.end = IRQ_DM365_EMAC_RXPULSE,
.flags = IORESOURCE_IRQ,
},
{
.start = IRQ_DM365_EMAC_TXPULSE,
.end = IRQ_DM365_EMAC_TXPULSE,
.flags = IORESOURCE_IRQ,
},
{
.start = IRQ_DM365_EMAC_MISCPULSE,
.end = IRQ_DM365_EMAC_MISCPULSE,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device dm365_emac_device = {
.name = "davinci_emac",
.id = 1,
.dev = {
.platform_data = &dm365_emac_pdata,
},
.num_resources = ARRAY_SIZE(dm365_emac_resources),
.resource = dm365_emac_resources,
};
static u8 dm365_default_priorities[DAVINCI_N_AINTC_IRQ] = {
[IRQ_VDINT0] = 2,
@ -702,6 +748,7 @@ static struct davinci_soc_info davinci_soc_info_dm365 = {
.gpio_num = 104,
.gpio_irq = 44,
.serial_dev = &dm365_serial_device,
.emac_pdata = &dm365_emac_pdata,
.sram_dma = 0x00010000,
.sram_len = SZ_32K,
};
@ -710,3 +757,14 @@ void __init dm365_init(void)
{
davinci_common_init(&davinci_soc_info_dm365);
}
static int __init dm365_init_devices(void)
{
if (!cpu_is_davinci_dm365())
return 0;
platform_device_register(&dm365_emac_device);
return 0;
}
postcore_initcall(dm365_init_devices);