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Commit 8ed0a9d4 authored by Sandeep Paulraj's avatar Sandeep Paulraj Committed by Kevin Hilman
Browse files

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: default avatarSandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent 9f513153

arch/arm/mach-davinci/board-dm365-evm.c

+64 −2
Original line number Diff line number Diff line
@@ -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)

arch/arm/mach-davinci/dm365.c

+58 −0
Original line number Diff line number Diff line
@@ -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);