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 },
108 #elif defined(CONFIG_USE_NOR)
109 /* NOR pin muxer settings */
110 const struct pinmux_config nor_pins[] = {
132 { pinmux(10), 1, 0 },
133 { pinmux(10), 1, 1 },
134 { pinmux(10), 1, 2 },
135 { pinmux(10), 1, 3 },
136 { pinmux(10), 1, 4 },
137 { pinmux(10), 1, 5 },
138 { pinmux(10), 1, 6 },
139 { pinmux(10), 1, 7 },
140 { pinmux(11), 1, 0 },
141 { pinmux(11), 1, 1 },
142 { pinmux(11), 1, 2 },
143 { pinmux(11), 1, 3 },
144 { pinmux(11), 1, 4 },
145 { pinmux(11), 1, 5 },
146 { pinmux(11), 1, 6 },
147 { pinmux(11), 1, 7 },
148 { pinmux(12), 1, 0 },
149 { pinmux(12), 1, 1 },
150 { pinmux(12), 1, 2 },
151 { pinmux(12), 1, 3 },
152 { pinmux(12), 1, 4 },
153 { pinmux(12), 1, 5 },
154 { pinmux(12), 1, 6 },
159 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
164 #endif /* CONFIG_DRIVER_TI_EMAC */
166 static const struct pinmux_resource pinmuxes[] = {
167 #ifdef CONFIG_SPI_FLASH
168 PINMUX_ITEM(spi1_pins),
170 PINMUX_ITEM(uart_pins),
171 PINMUX_ITEM(i2c_pins),
172 #ifdef CONFIG_NAND_DAVINCI
173 PINMUX_ITEM(nand_pins),
174 #elif defined(CONFIG_USE_NOR)
175 PINMUX_ITEM(nor_pins),
179 static const struct lpsc_resource lpsc[] = {
180 { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
181 { DAVINCI_LPSC_SPI1 }, /* Serial Flash */
182 { DAVINCI_LPSC_EMAC }, /* image download */
183 { DAVINCI_LPSC_UART2 }, /* console */
184 { DAVINCI_LPSC_GPIO },
187 #ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
188 #define CONFIG_DA850_EVM_MAX_CPU_CLK 300000000
192 * get_board_rev() - setup to pass kernel board revision information
194 * bit[0-3] Maximum cpu clock rate supported by onboard SoC
200 u32 get_board_rev(void)
203 u32 maxcpuclk = CONFIG_DA850_EVM_MAX_CPU_CLK;
206 s = getenv("maxcpuclk");
208 maxcpuclk = simple_strtoul(s, NULL, 10);
210 if (maxcpuclk >= 456000000)
212 else if (maxcpuclk >= 408000000)
214 else if (maxcpuclk >= 372000000)
222 #ifndef CONFIG_USE_IRQ
227 #ifdef CONFIG_NAND_DAVINCI
229 * NAND CS setup - cycle counts based on da850evm NAND timings in the
230 * Linux kernel @ 25MHz EMIFA
232 writel((DAVINCI_ABCR_WSETUP(0) |
233 DAVINCI_ABCR_WSTROBE(1) |
234 DAVINCI_ABCR_WHOLD(0) |
235 DAVINCI_ABCR_RSETUP(0) |
236 DAVINCI_ABCR_RSTROBE(1) |
237 DAVINCI_ABCR_RHOLD(0) |
239 DAVINCI_ABCR_ASIZE_8BIT),
240 &davinci_emif_regs->ab2cr); /* CS3 */
243 /* arch number of the board */
244 gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
246 /* address of boot parameters */
247 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
250 * Power on required peripherals
251 * ARM does not have access by default to PSC0 and PSC1
252 * assuming here that the DSP bootloader has set the IOPU
253 * such that PSC access is available to ARM
255 if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
258 /* setup the SUSPSRC for ARM to control emulation suspend */
259 writel(readl(&davinci_syscfg_regs->suspsrc) &
260 ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
261 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
262 DAVINCI_SYSCFG_SUSPSRC_UART2),
263 &davinci_syscfg_regs->suspsrc);
265 /* configure pinmux settings */
266 if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
269 #ifdef CONFIG_DRIVER_TI_EMAC
270 if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0)
273 davinci_emac_mii_mode_sel(HAS_RMII);
274 #endif /* CONFIG_DRIVER_TI_EMAC */
276 /* enable the console UART */
277 writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
278 DAVINCI_UART_PWREMU_MGMT_UTRST),
279 &davinci_uart2_ctrl_regs->pwremu_mgmt);
284 #ifdef CONFIG_DRIVER_TI_EMAC
286 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
290 * DA850/OMAP-L138 EVM can interface to a daughter card for
291 * additional features. This card has an I2C GPIO Expander TCA6416
292 * to select the required functions like camera, RMII Ethernet,
293 * character LCD, video.
295 * Initialization of the expander involves configuring the
296 * polarity and direction of the ports. P07-P05 are used here.
297 * These ports are connected to a Mux chip which enables only one
298 * functionality at a time.
300 * For RMII phy to respond, the MII MDIO clock has to be disabled
301 * since both the PHY devices have address as zero. The MII MDIO
302 * clock is controlled via GPIO2[6].
304 * This code is valid for Beta version of the hardware
306 int rmii_hw_init(void)
308 const struct pinmux_config gpio_pins[] = {
315 /* PinMux for GPIO */
316 if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
319 /* I2C Exapnder configuration */
320 /* Set polarity to non-inverted */
323 ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 4, 1, buf, 2);
325 printf("\nExpander @ 0x%02x write FAILED!!!\n",
326 CONFIG_SYS_I2C_EXPANDER_ADDR);
330 /* Configure P07-P05 as outputs */
333 ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 6, 1, buf, 2);
335 printf("\nExpander @ 0x%02x write FAILED!!!\n",
336 CONFIG_SYS_I2C_EXPANDER_ADDR);
339 /* For Ethernet RMII selection
344 if (i2c_read(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) {
345 printf("\nExpander @ 0x%02x read FAILED!!!\n",
346 CONFIG_SYS_I2C_EXPANDER_ADDR);
350 buf[0] |= (0 << 7) | (1 << 6) | (1 << 5);
351 if (i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) {
352 printf("\nExpander @ 0x%02x write FAILED!!!\n",
353 CONFIG_SYS_I2C_EXPANDER_ADDR);
356 /* Set the output as high */
357 temp = REG(GPIO_BANK2_REG_SET_ADDR);
359 REG(GPIO_BANK2_REG_SET_ADDR) = temp;
361 /* Set the GPIO direction as output */
362 temp = REG(GPIO_BANK2_REG_DIR_ADDR);
363 temp &= ~(0x01 << 6);
364 REG(GPIO_BANK2_REG_DIR_ADDR) = temp;
368 #endif /* CONFIG_DRIVER_TI_EMAC_USE_RMII */
371 * Initializes on-board ethernet controllers.
373 int board_eth_init(bd_t *bis)
375 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
376 /* Select RMII fucntion through the expander */
378 printf("RMII hardware init failed!!!\n");
380 if (!davinci_emac_initialize()) {
381 printf("Error: Ethernet init failed!\n");
387 #endif /* CONFIG_DRIVER_TI_EMAC */