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 * SPDX-License-Identifier: GPL-2.0+
17 #include <spi_flash.h>
18 #include <asm/arch/hardware.h>
19 #include <asm/ti-common/davinci_nand.h>
20 #include <asm/arch/emac_defs.h>
21 #include <asm/arch/pinmux_defs.h>
23 #include <asm/arch/davinci_misc.h>
24 #include <linux/errno.h>
26 #include <asm/mach-types.h>
28 #ifdef CONFIG_MMC_DAVINCI
30 #include <asm/arch/sdmmc_defs.h>
33 DECLARE_GLOBAL_DATA_PTR;
35 #ifdef CONFIG_DRIVER_TI_EMAC
36 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
41 #endif /* CONFIG_DRIVER_TI_EMAC */
43 #define CFG_MAC_ADDR_SPI_BUS 0
44 #define CFG_MAC_ADDR_SPI_CS 0
45 #define CFG_MAC_ADDR_SPI_MAX_HZ CONFIG_SF_DEFAULT_SPEED
46 #define CFG_MAC_ADDR_SPI_MODE SPI_MODE_3
48 #define CFG_MAC_ADDR_OFFSET (flash->size - SZ_64K)
50 #ifdef CONFIG_MAC_ADDR_IN_SPIFLASH
51 static int get_mac_addr(u8 *addr)
53 struct spi_flash *flash;
56 flash = spi_flash_probe(CFG_MAC_ADDR_SPI_BUS, CFG_MAC_ADDR_SPI_CS,
57 CFG_MAC_ADDR_SPI_MAX_HZ, CFG_MAC_ADDR_SPI_MODE);
59 printf("Error - unable to probe SPI flash.\n");
63 ret = spi_flash_read(flash, CFG_MAC_ADDR_OFFSET, 6, addr);
65 printf("Error - unable to read MAC address from SPI flash.\n");
73 void dsp_lpsc_on(unsigned domain, unsigned int id)
75 dv_reg_p mdstat, mdctl, ptstat, ptcmd;
76 struct davinci_psc_regs *psc_regs;
78 psc_regs = davinci_psc0_regs;
79 mdstat = &psc_regs->psc0.mdstat[id];
80 mdctl = &psc_regs->psc0.mdctl[id];
81 ptstat = &psc_regs->ptstat;
82 ptcmd = &psc_regs->ptcmd;
84 while (*ptstat & (0x1 << domain))
87 if ((*mdstat & 0x1f) == 0x03)
88 return; /* Already on and enabled */
92 *ptcmd = 0x1 << domain;
94 while (*ptstat & (0x1 << domain))
96 while ((*mdstat & 0x1f) != 0x03)
97 ; /* Probably an overkill... */
100 static void dspwake(void)
102 unsigned *resetvect = (unsigned *)DAVINCI_L3CBARAM_BASE;
105 /* if the device is ARM only, return */
106 if ((readl(CHIP_REV_ID_REG) & 0x3f) == 0x10)
109 if (hwconfig_subarg_cmp_f("dsp", "wake", "no", NULL))
112 *resetvect++ = 0x1E000; /* DSP Idle */
113 /* clear out the next 10 words as NOP */
114 memset(resetvect, 0, sizeof(unsigned) *10);
116 /* setup the DSP reset vector */
117 writel(DAVINCI_L3CBARAM_BASE, HOST1CFG);
119 dsp_lpsc_on(1, DAVINCI_LPSC_GEM);
120 val = readl(PSC0_MDCTL + (15 * 4));
122 writel(val, (PSC0_MDCTL + (15 * 4)));
125 int misc_init_r(void)
129 #if defined(CONFIG_MAC_ADDR_IN_SPIFLASH) || defined(CONFIG_MAC_ADDR_IN_EEPROM)
131 uchar env_enetaddr[6];
134 enetaddr_found = eth_getenv_enetaddr("ethaddr", env_enetaddr);
136 #ifdef CONFIG_MAC_ADDR_IN_SPIFLASH
140 spi_mac_read = get_mac_addr(buff);
143 * MAC address not present in the environment
144 * try and read the MAC address from SPI flash
147 if (!enetaddr_found) {
149 if (is_valid_ethaddr(buff)) {
150 if (eth_env_set_enetaddr("ethaddr", buff)) {
151 printf("Warning: Failed to "
152 "set MAC address from SPI flash\n");
155 printf("Warning: Invalid "
156 "MAC address read from SPI flash\n");
161 * MAC address present in environment compare it with
162 * the MAC address in SPI flash and warn on mismatch
164 if (!spi_mac_read && is_valid_ethaddr(buff) &&
165 memcmp(env_enetaddr, buff, 6))
166 printf("Warning: MAC address in SPI flash don't match "
167 "with the MAC address in the environment\n");
168 printf("Default using MAC address from environment\n");
174 /* Read Ethernet MAC address from EEPROM */
175 eeprom_mac_read = dvevm_read_mac_address(enetaddr);
178 * MAC address not present in the environment
179 * try and read the MAC address from EEPROM flash
182 if (!enetaddr_found) {
184 /* Set Ethernet MAC address from EEPROM */
185 davinci_sync_env_enetaddr(enetaddr);
188 * MAC address present in environment compare it with
189 * the MAC address in EEPROM and warn on mismatch
191 if (eeprom_mac_read && memcmp(enetaddr, env_enetaddr, 6))
192 printf("Warning: MAC address in EEPROM don't match "
193 "with the MAC address in the environment\n");
194 printf("Default using MAC address from environment\n");
201 #ifdef CONFIG_MMC_DAVINCI
202 static struct davinci_mmc mmc_sd0 = {
203 .reg_base = (struct davinci_mmc_regs *)DAVINCI_MMC_SD0_BASE,
204 .host_caps = MMC_MODE_4BIT, /* DA850 supports only 4-bit SD/MMC */
205 .voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
206 .version = MMC_CTLR_VERSION_2,
209 int board_mmc_init(bd_t *bis)
211 mmc_sd0.input_clk = clk_get(DAVINCI_MMCSD_CLKID);
213 /* Add slot-0 to mmc subsystem */
214 return davinci_mmc_init(bis, &mmc_sd0);
218 static const struct pinmux_config gpio_pins[] = {
219 #ifdef CONFIG_USE_NOR
220 /* GP0[11] is required for NOR to work on Rev 3 EVMs */
221 { pinmux(0), 8, 4 }, /* GP0[11] */
223 #ifdef CONFIG_MMC_DAVINCI
224 /* GP0[11] is required for SD to work on Rev 3 EVMs */
225 { pinmux(0), 8, 4 }, /* GP0[11] */
229 const struct pinmux_resource pinmuxes[] = {
230 #ifdef CONFIG_DRIVER_TI_EMAC
231 PINMUX_ITEM(emac_pins_mdio),
232 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
233 PINMUX_ITEM(emac_pins_rmii),
235 PINMUX_ITEM(emac_pins_mii),
238 #ifdef CONFIG_SPI_FLASH
239 PINMUX_ITEM(spi1_pins_base),
240 PINMUX_ITEM(spi1_pins_scs0),
242 PINMUX_ITEM(uart2_pins_txrx),
243 PINMUX_ITEM(uart2_pins_rtscts),
244 PINMUX_ITEM(i2c0_pins),
245 #ifdef CONFIG_NAND_DAVINCI
246 PINMUX_ITEM(emifa_pins_cs3),
247 PINMUX_ITEM(emifa_pins_cs4),
248 PINMUX_ITEM(emifa_pins_nand),
249 #elif defined(CONFIG_USE_NOR)
250 PINMUX_ITEM(emifa_pins_cs2),
251 PINMUX_ITEM(emifa_pins_nor),
253 PINMUX_ITEM(gpio_pins),
254 #ifdef CONFIG_MMC_DAVINCI
255 PINMUX_ITEM(mmc0_pins),
259 const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
261 const struct lpsc_resource lpsc[] = {
262 { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
263 { DAVINCI_LPSC_SPI1 }, /* Serial Flash */
264 { DAVINCI_LPSC_EMAC }, /* image download */
265 { DAVINCI_LPSC_UART2 }, /* console */
266 { DAVINCI_LPSC_GPIO },
267 #ifdef CONFIG_MMC_DAVINCI
268 { DAVINCI_LPSC_MMC_SD },
272 const int lpsc_size = ARRAY_SIZE(lpsc);
274 #ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
275 #define CONFIG_DA850_EVM_MAX_CPU_CLK 300000000
278 #define REV_AM18X_EVM 0x100
281 * get_board_rev() - setup to pass kernel board revision information
283 * bit[0-3] Maximum cpu clock rate supported by onboard SoC
289 u32 get_board_rev(void)
292 u32 maxcpuclk = CONFIG_DA850_EVM_MAX_CPU_CLK;
295 s = getenv("maxcpuclk");
297 maxcpuclk = simple_strtoul(s, NULL, 10);
299 if (maxcpuclk >= 456000000)
301 else if (maxcpuclk >= 408000000)
303 else if (maxcpuclk >= 372000000)
305 #ifdef CONFIG_DA850_AM18X_EVM
306 rev |= REV_AM18X_EVM;
311 int board_early_init_f(void)
314 * Power on required peripherals
315 * ARM does not have access by default to PSC0 and PSC1
316 * assuming here that the DSP bootloader has set the IOPU
317 * such that PSC access is available to ARM
319 if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
329 #ifdef CONFIG_NAND_DAVINCI
331 * NAND CS setup - cycle counts based on da850evm NAND timings in the
332 * Linux kernel @ 25MHz EMIFA
334 writel((DAVINCI_ABCR_WSETUP(2) |
335 DAVINCI_ABCR_WSTROBE(2) |
336 DAVINCI_ABCR_WHOLD(1) |
337 DAVINCI_ABCR_RSETUP(1) |
338 DAVINCI_ABCR_RSTROBE(4) |
339 DAVINCI_ABCR_RHOLD(0) |
341 DAVINCI_ABCR_ASIZE_8BIT),
342 &davinci_emif_regs->ab2cr); /* CS3 */
345 /* arch number of the board */
346 gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
348 /* address of boot parameters */
349 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
351 /* setup the SUSPSRC for ARM to control emulation suspend */
352 writel(readl(&davinci_syscfg_regs->suspsrc) &
353 ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
354 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
355 DAVINCI_SYSCFG_SUSPSRC_UART2),
356 &davinci_syscfg_regs->suspsrc);
358 /* configure pinmux settings */
359 if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
362 #ifdef CONFIG_USE_NOR
363 /* Set the GPIO direction as output */
364 clrbits_le32((u32 *)GPIO_BANK0_REG_DIR_ADDR, (0x01 << 11));
366 /* Set the output as low */
367 writel(0x01 << 11, GPIO_BANK0_REG_CLR_ADDR);
370 #ifdef CONFIG_MMC_DAVINCI
371 /* Set the GPIO direction as output */
372 clrbits_le32((u32 *)GPIO_BANK0_REG_DIR_ADDR, (0x01 << 11));
374 /* Set the output as high */
375 writel(0x01 << 11, GPIO_BANK0_REG_SET_ADDR);
378 #ifdef CONFIG_DRIVER_TI_EMAC
379 davinci_emac_mii_mode_sel(HAS_RMII);
380 #endif /* CONFIG_DRIVER_TI_EMAC */
382 /* enable the console UART */
383 writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
384 DAVINCI_UART_PWREMU_MGMT_UTRST),
385 &davinci_uart2_ctrl_regs->pwremu_mgmt);
390 #ifdef CONFIG_DRIVER_TI_EMAC
392 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
396 * DA850/OMAP-L138 EVM can interface to a daughter card for
397 * additional features. This card has an I2C GPIO Expander TCA6416
398 * to select the required functions like camera, RMII Ethernet,
399 * character LCD, video.
401 * Initialization of the expander involves configuring the
402 * polarity and direction of the ports. P07-P05 are used here.
403 * These ports are connected to a Mux chip which enables only one
404 * functionality at a time.
406 * For RMII phy to respond, the MII MDIO clock has to be disabled
407 * since both the PHY devices have address as zero. The MII MDIO
408 * clock is controlled via GPIO2[6].
410 * This code is valid for Beta version of the hardware
412 int rmii_hw_init(void)
414 const struct pinmux_config gpio_pins[] = {
421 /* PinMux for GPIO */
422 if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
425 /* I2C Exapnder configuration */
426 /* Set polarity to non-inverted */
429 ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 4, 1, buf, 2);
431 printf("\nExpander @ 0x%02x write FAILED!!!\n",
432 CONFIG_SYS_I2C_EXPANDER_ADDR);
436 /* Configure P07-P05 as outputs */
439 ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 6, 1, buf, 2);
441 printf("\nExpander @ 0x%02x write FAILED!!!\n",
442 CONFIG_SYS_I2C_EXPANDER_ADDR);
445 /* For Ethernet RMII selection
450 if (i2c_read(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) {
451 printf("\nExpander @ 0x%02x read FAILED!!!\n",
452 CONFIG_SYS_I2C_EXPANDER_ADDR);
456 buf[0] |= (0 << 7) | (1 << 6) | (1 << 5);
457 if (i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) {
458 printf("\nExpander @ 0x%02x write FAILED!!!\n",
459 CONFIG_SYS_I2C_EXPANDER_ADDR);
462 /* Set the output as high */
463 temp = REG(GPIO_BANK2_REG_SET_ADDR);
465 REG(GPIO_BANK2_REG_SET_ADDR) = temp;
467 /* Set the GPIO direction as output */
468 temp = REG(GPIO_BANK2_REG_DIR_ADDR);
469 temp &= ~(0x01 << 6);
470 REG(GPIO_BANK2_REG_DIR_ADDR) = temp;
474 #endif /* CONFIG_DRIVER_TI_EMAC_USE_RMII */
477 * Initializes on-board ethernet controllers.
479 int board_eth_init(bd_t *bis)
481 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
482 /* Select RMII fucntion through the expander */
484 printf("RMII hardware init failed!!!\n");
486 if (!davinci_emac_initialize()) {
487 printf("Error: Ethernet init failed!\n");
493 #endif /* CONFIG_DRIVER_TI_EMAC */