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>
33 #include <asm/arch/da8xx_common.h>
35 DECLARE_GLOBAL_DATA_PTR;
37 #define pinmux(x) (&davinci_syscfg_regs->pinmux[x])
39 /* SPI0 pin muxer settings */
40 static const struct pinmux_config spi1_pins[] = {
47 /* UART pin muxer settings */
48 static const struct pinmux_config uart_pins[] = {
55 #ifdef CONFIG_DRIVER_TI_EMAC
56 static const struct pinmux_config emac_pins[] = {
57 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
65 #else /* ! CONFIG_DRIVER_TI_EMAC_USE_RMII */
81 #endif /* CONFIG_DRIVER_TI_EMAC_USE_RMII */
86 /* I2C pin muxer settings */
87 static const struct pinmux_config i2c_pins[] = {
92 #ifdef CONFIG_NAND_DAVINCI
93 const struct pinmux_config nand_pins[] = {
106 { pinmux(12), 1, 5 },
111 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
116 #endif /* CONFIG_DRIVER_TI_EMAC */
118 static const struct pinmux_resource pinmuxes[] = {
119 #ifdef CONFIG_SPI_FLASH
120 PINMUX_ITEM(spi1_pins),
122 PINMUX_ITEM(uart_pins),
123 PINMUX_ITEM(i2c_pins),
124 #ifdef CONFIG_NAND_DAVINCI
125 PINMUX_ITEM(nand_pins),
129 static const struct lpsc_resource lpsc[] = {
130 { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
131 { DAVINCI_LPSC_SPI1 }, /* Serial Flash */
132 { DAVINCI_LPSC_EMAC }, /* image download */
133 { DAVINCI_LPSC_UART2 }, /* console */
134 { DAVINCI_LPSC_GPIO },
137 #ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
138 #define CONFIG_DA850_EVM_MAX_CPU_CLK 300000000
142 * get_board_rev() - setup to pass kernel board revision information
144 * bit[0-3] Maximum cpu clock rate supported by onboard SoC
150 u32 get_board_rev(void)
153 u32 maxcpuclk = CONFIG_DA850_EVM_MAX_CPU_CLK;
156 s = getenv("maxcpuclk");
158 maxcpuclk = simple_strtoul(s, NULL, 10);
160 if (maxcpuclk >= 456000000)
162 else if (maxcpuclk >= 408000000)
164 else if (maxcpuclk >= 372000000)
172 #ifndef CONFIG_USE_IRQ
177 #ifdef CONFIG_NAND_DAVINCI
179 * NAND CS setup - cycle counts based on da850evm NAND timings in the
180 * Linux kernel @ 25MHz EMIFA
182 writel((DAVINCI_ABCR_WSETUP(0) |
183 DAVINCI_ABCR_WSTROBE(0) |
184 DAVINCI_ABCR_WHOLD(0) |
185 DAVINCI_ABCR_RSETUP(0) |
186 DAVINCI_ABCR_RSTROBE(1) |
187 DAVINCI_ABCR_RHOLD(0) |
189 DAVINCI_ABCR_ASIZE_8BIT),
190 &davinci_emif_regs->ab2cr); /* CS3 */
193 /* arch number of the board */
194 gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
196 /* address of boot parameters */
197 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
200 * Power on required peripherals
201 * ARM does not have access by default to PSC0 and PSC1
202 * assuming here that the DSP bootloader has set the IOPU
203 * such that PSC access is available to ARM
205 if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
208 /* setup the SUSPSRC for ARM to control emulation suspend */
209 writel(readl(&davinci_syscfg_regs->suspsrc) &
210 ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
211 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
212 DAVINCI_SYSCFG_SUSPSRC_UART2),
213 &davinci_syscfg_regs->suspsrc);
215 /* configure pinmux settings */
216 if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
219 #ifdef CONFIG_DRIVER_TI_EMAC
220 if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0)
223 da850_emac_mii_mode_sel(HAS_RMII);
224 #endif /* CONFIG_DRIVER_TI_EMAC */
226 /* enable the console UART */
227 writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
228 DAVINCI_UART_PWREMU_MGMT_UTRST),
229 &davinci_uart2_ctrl_regs->pwremu_mgmt);
234 #ifdef CONFIG_DRIVER_TI_EMAC
236 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
240 * DA850/OMAP-L138 EVM can interface to a daughter card for
241 * additional features. This card has an I2C GPIO Expander TCA6416
242 * to select the required functions like camera, RMII Ethernet,
243 * character LCD, video.
245 * Initialization of the expander involves configuring the
246 * polarity and direction of the ports. P07-P05 are used here.
247 * These ports are connected to a Mux chip which enables only one
248 * functionality at a time.
250 * For RMII phy to respond, the MII MDIO clock has to be disabled
251 * since both the PHY devices have address as zero. The MII MDIO
252 * clock is controlled via GPIO2[6].
254 * This code is valid for Beta version of the hardware
256 int rmii_hw_init(void)
258 const struct pinmux_config gpio_pins[] = {
265 /* PinMux for GPIO */
266 if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
269 /* I2C Exapnder configuration */
270 /* Set polarity to non-inverted */
273 ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 4, 1, buf, 2);
275 printf("\nExpander @ 0x%02x write FAILED!!!\n",
276 CONFIG_SYS_I2C_EXPANDER_ADDR);
280 /* Configure P07-P05 as outputs */
283 ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 6, 1, buf, 2);
285 printf("\nExpander @ 0x%02x write FAILED!!!\n",
286 CONFIG_SYS_I2C_EXPANDER_ADDR);
289 /* For Ethernet RMII selection
294 if (i2c_read(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) {
295 printf("\nExpander @ 0x%02x read FAILED!!!\n",
296 CONFIG_SYS_I2C_EXPANDER_ADDR);
300 buf[0] |= (0 << 7) | (1 << 6) | (1 << 5);
301 if (i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) {
302 printf("\nExpander @ 0x%02x write FAILED!!!\n",
303 CONFIG_SYS_I2C_EXPANDER_ADDR);
306 /* Set the output as high */
307 temp = REG(GPIO_BANK2_REG_SET_ADDR);
309 REG(GPIO_BANK2_REG_SET_ADDR) = temp;
311 /* Set the GPIO direction as output */
312 temp = REG(GPIO_BANK2_REG_DIR_ADDR);
313 temp &= ~(0x01 << 6);
314 REG(GPIO_BANK2_REG_DIR_ADDR) = temp;
318 #endif /* CONFIG_DRIVER_TI_EMAC_USE_RMII */
321 * Initializes on-board ethernet controllers.
323 int board_eth_init(bd_t *bis)
325 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
326 /* Select RMII fucntion through the expander */
328 printf("RMII hardware init failed!!!\n");
330 if (!davinci_emac_initialize()) {
331 printf("Error: Ethernet init failed!\n");
337 #endif /* CONFIG_DRIVER_TI_EMAC */