2 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
4 * Based on da830evm.c. Original Copyrights follow:
6 * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
7 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <asm/arch/hardware.h>
29 #include <asm/arch/emif_defs.h>
30 #include <asm/arch/emac_defs.h>
32 #include <asm/arch/davinci_misc.h>
34 DECLARE_GLOBAL_DATA_PTR;
36 #define pinmux(x) (&davinci_syscfg_regs->pinmux[x])
38 /* SPI0 pin muxer settings */
39 static const struct pinmux_config spi1_pins[] = {
46 /* UART pin muxer settings */
47 static const struct pinmux_config uart_pins[] = {
54 #ifdef CONFIG_DRIVER_TI_EMAC
55 static const struct pinmux_config emac_pins[] = {
56 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
64 #else /* ! CONFIG_DRIVER_TI_EMAC_USE_RMII */
80 #endif /* CONFIG_DRIVER_TI_EMAC_USE_RMII */
85 /* I2C pin muxer settings */
86 static const struct pinmux_config i2c_pins[] = {
91 #ifdef CONFIG_NAND_DAVINCI
92 const struct pinmux_config nand_pins[] = {
105 { pinmux(12), 1, 5 },
110 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
115 #endif /* CONFIG_DRIVER_TI_EMAC */
117 static const struct pinmux_resource pinmuxes[] = {
118 #ifdef CONFIG_SPI_FLASH
119 PINMUX_ITEM(spi1_pins),
121 PINMUX_ITEM(uart_pins),
122 PINMUX_ITEM(i2c_pins),
123 #ifdef CONFIG_NAND_DAVINCI
124 PINMUX_ITEM(nand_pins),
128 static const struct lpsc_resource lpsc[] = {
129 { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
130 { DAVINCI_LPSC_SPI1 }, /* Serial Flash */
131 { DAVINCI_LPSC_EMAC }, /* image download */
132 { DAVINCI_LPSC_UART2 }, /* console */
133 { DAVINCI_LPSC_GPIO },
136 #ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
137 #define CONFIG_DA850_EVM_MAX_CPU_CLK 300000000
141 * get_board_rev() - setup to pass kernel board revision information
143 * bit[0-3] Maximum cpu clock rate supported by onboard SoC
149 u32 get_board_rev(void)
152 u32 maxcpuclk = CONFIG_DA850_EVM_MAX_CPU_CLK;
155 s = getenv("maxcpuclk");
157 maxcpuclk = simple_strtoul(s, NULL, 10);
159 if (maxcpuclk >= 456000000)
161 else if (maxcpuclk >= 408000000)
163 else if (maxcpuclk >= 372000000)
171 #ifndef CONFIG_USE_IRQ
176 #ifdef CONFIG_NAND_DAVINCI
178 * NAND CS setup - cycle counts based on da850evm NAND timings in the
179 * Linux kernel @ 25MHz EMIFA
181 writel((DAVINCI_ABCR_WSETUP(0) |
182 DAVINCI_ABCR_WSTROBE(1) |
183 DAVINCI_ABCR_WHOLD(0) |
184 DAVINCI_ABCR_RSETUP(0) |
185 DAVINCI_ABCR_RSTROBE(1) |
186 DAVINCI_ABCR_RHOLD(0) |
188 DAVINCI_ABCR_ASIZE_8BIT),
189 &davinci_emif_regs->ab2cr); /* CS3 */
192 /* arch number of the board */
193 gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
195 /* address of boot parameters */
196 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
199 * Power on required peripherals
200 * ARM does not have access by default to PSC0 and PSC1
201 * assuming here that the DSP bootloader has set the IOPU
202 * such that PSC access is available to ARM
204 if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
207 /* setup the SUSPSRC for ARM to control emulation suspend */
208 writel(readl(&davinci_syscfg_regs->suspsrc) &
209 ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
210 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
211 DAVINCI_SYSCFG_SUSPSRC_UART2),
212 &davinci_syscfg_regs->suspsrc);
214 /* configure pinmux settings */
215 if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
218 #ifdef CONFIG_DRIVER_TI_EMAC
219 if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0)
222 davinci_emac_mii_mode_sel(HAS_RMII);
223 #endif /* CONFIG_DRIVER_TI_EMAC */
225 /* enable the console UART */
226 writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
227 DAVINCI_UART_PWREMU_MGMT_UTRST),
228 &davinci_uart2_ctrl_regs->pwremu_mgmt);
233 #ifdef CONFIG_DRIVER_TI_EMAC
235 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
239 * DA850/OMAP-L138 EVM can interface to a daughter card for
240 * additional features. This card has an I2C GPIO Expander TCA6416
241 * to select the required functions like camera, RMII Ethernet,
242 * character LCD, video.
244 * Initialization of the expander involves configuring the
245 * polarity and direction of the ports. P07-P05 are used here.
246 * These ports are connected to a Mux chip which enables only one
247 * functionality at a time.
249 * For RMII phy to respond, the MII MDIO clock has to be disabled
250 * since both the PHY devices have address as zero. The MII MDIO
251 * clock is controlled via GPIO2[6].
253 * This code is valid for Beta version of the hardware
255 int rmii_hw_init(void)
257 const struct pinmux_config gpio_pins[] = {
264 /* PinMux for GPIO */
265 if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
268 /* I2C Exapnder configuration */
269 /* Set polarity to non-inverted */
272 ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 4, 1, buf, 2);
274 printf("\nExpander @ 0x%02x write FAILED!!!\n",
275 CONFIG_SYS_I2C_EXPANDER_ADDR);
279 /* Configure P07-P05 as outputs */
282 ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 6, 1, buf, 2);
284 printf("\nExpander @ 0x%02x write FAILED!!!\n",
285 CONFIG_SYS_I2C_EXPANDER_ADDR);
288 /* For Ethernet RMII selection
293 if (i2c_read(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) {
294 printf("\nExpander @ 0x%02x read FAILED!!!\n",
295 CONFIG_SYS_I2C_EXPANDER_ADDR);
299 buf[0] |= (0 << 7) | (1 << 6) | (1 << 5);
300 if (i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) {
301 printf("\nExpander @ 0x%02x write FAILED!!!\n",
302 CONFIG_SYS_I2C_EXPANDER_ADDR);
305 /* Set the output as high */
306 temp = REG(GPIO_BANK2_REG_SET_ADDR);
308 REG(GPIO_BANK2_REG_SET_ADDR) = temp;
310 /* Set the GPIO direction as output */
311 temp = REG(GPIO_BANK2_REG_DIR_ADDR);
312 temp &= ~(0x01 << 6);
313 REG(GPIO_BANK2_REG_DIR_ADDR) = temp;
317 #endif /* CONFIG_DRIVER_TI_EMAC_USE_RMII */
320 * Initializes on-board ethernet controllers.
322 int board_eth_init(bd_t *bis)
324 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
325 /* Select RMII fucntion through the expander */
327 printf("RMII hardware init failed!!!\n");
329 if (!davinci_emac_initialize()) {
330 printf("Error: Ethernet init failed!\n");
336 #endif /* CONFIG_DRIVER_TI_EMAC */