From: Sandeep Paulraj <s-paul...@ti.com>
The patch adds Support for EMAC in the DM365 SOC and
the DM365 EVM board.
Signed-off-by: Sandeep Paulraj <s-paul...@ti.com>
Signed-off-by: Kevin Hilman <khil...@deeprootsystems.com>
---
arch/arm/mach-davinci/board-dm365-evm.c | 66 ++++++++++++++++++++++++++++++-
arch/arm/mach-davinci/dm365.c | 58 +++++++++++++++++++++++++++
2 files changed, 122 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-davinci/board-dm365-evm.c
b/arch/arm/mach-davinci/board-dm365-evm.c
index 08c2f12..9dda399 100644
--- a/arch/arm/mach-davinci/board-dm365-evm.c
+++ b/arch/arm/mach-davinci/board-dm365-evm.c
@@ -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)
diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c
index c9ae97a..9d615db 100644
--- a/arch/arm/mach-davinci/dm365.c
+++ b/arch/arm/mach-davinci/dm365.c
@@ -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);
--
1.6.3.3
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