From: Sandeep Paulraj <[email protected]> Patch adds Support for EMAC in DM365. Patch also configures mux setings for the EMAC on DM365 though this will already be done by U-Boot as U-Boot has EMAC support
Signed-off-by: Sandeep Paulraj <[email protected]> --- arch/arm/mach-davinci/board-dm365-evm.c | 58 ++++++++++++++++++++++++++- arch/arm/mach-davinci/dm365.c | 68 +++++++++++++++++++++++++++++++ 2 files changed, 125 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c index 08c2f12..9cb44c3 100644 --- a/arch/arm/mach-davinci/board-dm365-evm.c +++ b/arch/arm/mach-davinci/board-dm365-evm.c @@ -19,7 +19,7 @@ #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> @@ -34,14 +34,63 @@ #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 dm365_emac_enable(void) +{ + /* + * Bootloaders will correctly configure the mux settings + * but kernel will still setup PINMUX and INTMUX + */ + 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); + + 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 +104,15 @@ 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); + + dm365_emac_enable(); + + 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) diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c index 69d35d9..811a6f5 100644 --- a/arch/arm/mach-davinci/dm365.c +++ b/arch/arm/mach-davinci/dm365.c @@ -530,9 +530,65 @@ MUX_CFG(DM365, EMAC_RX_ER, 3, 3, 1, 1, false) MUX_CFG(DM365, EMAC_CRS, 3, 2, 1, 1, false) MUX_CFG(DM365, EMAC_MDIO, 3, 1, 1, 1, false) MUX_CFG(DM365, EMAC_MDCLK, 3, 0, 1, 1, false) + +INT_CFG(DM365, INT_EDMA_CC, 2, 1, 1, false) +INT_CFG(DM365, INT_EDMA_TC0_ERR, 3, 1, 1, false) +INT_CFG(DM365, INT_EDMA_TC1_ERR, 4, 1, 1, false) +INT_CFG(DM365, INT_PRTCSS, 10, 1, 1, false) +INT_CFG(DM365, INT_EMAC_RXTHRESH, 14, 1, 1, false) +INT_CFG(DM365, INT_EMAC_RXPULSE, 15, 1, 1, false) +INT_CFG(DM365, INT_EMAC_TXPULSE, 16, 1, 1, false) +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, @@ -689,6 +745,7 @@ 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, }; @@ -697,3 +754,14 @@ 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); -- 1.6.0.4 _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
