1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
5 * Based on da830evm.c. Original Copyrights follow:
7 * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
8 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
18 #include <spi_flash.h>
19 #include <asm/arch/hardware.h>
20 #include <asm/global_data.h>
21 #include <asm/ti-common/davinci_nand.h>
22 #include <asm/arch/emac_defs.h>
23 #include <asm/arch/pinmux_defs.h>
25 #include <asm/arch/davinci_misc.h>
26 #include <linux/errno.h>
28 #include <asm/mach-types.h>
31 #ifdef CONFIG_MMC_DAVINCI
33 #include <asm/arch/sdmmc_defs.h>
36 DECLARE_GLOBAL_DATA_PTR;
38 #ifdef CONFIG_DRIVER_TI_EMAC
39 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
44 #endif /* CONFIG_DRIVER_TI_EMAC */
46 #define CFG_MAC_ADDR_SPI_BUS 0
47 #define CFG_MAC_ADDR_SPI_CS 0
48 #define CFG_MAC_ADDR_SPI_MAX_HZ CONFIG_SF_DEFAULT_SPEED
49 #define CFG_MAC_ADDR_SPI_MODE SPI_MODE_3
51 #define CFG_MAC_ADDR_OFFSET (flash->size - SZ_64K)
53 #ifdef CONFIG_MAC_ADDR_IN_SPIFLASH
54 static int get_mac_addr(u8 *addr)
56 struct spi_flash *flash;
59 flash = spi_flash_probe(CFG_MAC_ADDR_SPI_BUS, CFG_MAC_ADDR_SPI_CS,
60 CFG_MAC_ADDR_SPI_MAX_HZ, CFG_MAC_ADDR_SPI_MODE);
62 printf("Error - unable to probe SPI flash.\n");
66 ret = spi_flash_read(flash, (CFG_MAC_ADDR_OFFSET), 6, addr);
68 printf("Error - unable to read MAC address from SPI flash.\n");
76 void dsp_lpsc_on(unsigned domain, unsigned int id)
78 dv_reg_p mdstat, mdctl, ptstat, ptcmd;
79 struct davinci_psc_regs *psc_regs;
81 psc_regs = davinci_psc0_regs;
82 mdstat = &psc_regs->psc0.mdstat[id];
83 mdctl = &psc_regs->psc0.mdctl[id];
84 ptstat = &psc_regs->ptstat;
85 ptcmd = &psc_regs->ptcmd;
87 while (*ptstat & (0x1 << domain))
90 if ((*mdstat & 0x1f) == 0x03)
91 return; /* Already on and enabled */
95 *ptcmd = 0x1 << domain;
97 while (*ptstat & (0x1 << domain))
99 while ((*mdstat & 0x1f) != 0x03)
100 ; /* Probably an overkill... */
103 static void dspwake(void)
105 unsigned *resetvect = (unsigned *)DAVINCI_L3CBARAM_BASE;
108 /* if the device is ARM only, return */
109 if ((readl(CHIP_REV_ID_REG) & 0x3f) == 0x10)
112 if (hwconfig_subarg_cmp_f("dsp", "wake", "no", NULL))
115 *resetvect++ = 0x1E000; /* DSP Idle */
116 /* clear out the next 10 words as NOP */
117 memset(resetvect, 0, sizeof(unsigned) *10);
119 /* setup the DSP reset vector */
120 writel(DAVINCI_L3CBARAM_BASE, HOST1CFG);
122 dsp_lpsc_on(1, DAVINCI_LPSC_GEM);
123 val = readl(PSC0_MDCTL + (15 * 4));
125 writel(val, (PSC0_MDCTL + (15 * 4)));
128 int misc_init_r(void)
132 #if defined(CONFIG_MAC_ADDR_IN_SPIFLASH) || defined(CONFIG_MAC_ADDR_IN_EEPROM)
134 uchar env_enetaddr[6];
137 enetaddr_found = eth_env_get_enetaddr("ethaddr", env_enetaddr);
141 #ifdef CONFIG_MAC_ADDR_IN_SPIFLASH
145 spi_mac_read = get_mac_addr(buff);
149 * MAC address not present in the environment
150 * try and read the MAC address from SPI flash
153 if (!enetaddr_found) {
155 if (is_valid_ethaddr(buff)) {
156 if (eth_env_set_enetaddr("ethaddr", buff)) {
157 printf("Warning: Failed to "
158 "set MAC address from SPI flash\n");
161 printf("Warning: Invalid "
162 "MAC address read from SPI flash\n");
167 * MAC address present in environment compare it with
168 * the MAC address in SPI flash and warn on mismatch
170 if (!spi_mac_read && is_valid_ethaddr(buff) &&
171 memcmp(env_enetaddr, buff, 6))
172 printf("Warning: MAC address in SPI flash don't match "
173 "with the MAC address in the environment\n");
174 printf("Default using MAC address from environment\n");
177 #elif defined(CONFIG_MAC_ADDR_IN_EEPROM)
181 /* Read Ethernet MAC address from EEPROM */
182 eeprom_mac_read = dvevm_read_mac_address(enetaddr);
185 * MAC address not present in the environment
186 * try and read the MAC address from EEPROM flash
189 if (!enetaddr_found) {
191 /* Set Ethernet MAC address from EEPROM */
192 davinci_sync_env_enetaddr(enetaddr);
195 * MAC address present in environment compare it with
196 * the MAC address in EEPROM and warn on mismatch
198 if (eeprom_mac_read && memcmp(enetaddr, env_enetaddr, 6))
199 printf("Warning: MAC address in EEPROM don't match "
200 "with the MAC address in the environment\n");
201 printf("Default using MAC address from environment\n");
208 static const struct pinmux_config gpio_pins[] = {
209 #ifdef CONFIG_MTD_NOR_FLASH
210 /* GP0[11] is required for NOR to work on Rev 3 EVMs */
211 { pinmux(0), 8, 4 }, /* GP0[11] */
213 #ifdef CONFIG_MMC_DAVINCI
214 /* GP0[11] is required for SD to work on Rev 3 EVMs */
215 { pinmux(0), 8, 4 }, /* GP0[11] */
219 const struct pinmux_resource pinmuxes[] = {
220 #ifdef CONFIG_DRIVER_TI_EMAC
221 PINMUX_ITEM(emac_pins_mdio),
222 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
223 PINMUX_ITEM(emac_pins_rmii),
225 PINMUX_ITEM(emac_pins_mii),
228 #ifdef CONFIG_SPI_FLASH
229 PINMUX_ITEM(spi1_pins_base),
230 PINMUX_ITEM(spi1_pins_scs0),
232 PINMUX_ITEM(uart2_pins_txrx),
233 PINMUX_ITEM(uart2_pins_rtscts),
234 PINMUX_ITEM(i2c0_pins),
235 #ifdef CONFIG_NAND_DAVINCI
236 PINMUX_ITEM(emifa_pins_cs3),
237 PINMUX_ITEM(emifa_pins_cs4),
238 PINMUX_ITEM(emifa_pins_nand),
239 #elif defined(CONFIG_MTD_NOR_FLASH)
240 PINMUX_ITEM(emifa_pins_cs2),
241 PINMUX_ITEM(emifa_pins_nor),
243 PINMUX_ITEM(gpio_pins),
244 #ifdef CONFIG_MMC_DAVINCI
245 PINMUX_ITEM(mmc0_pins),
249 const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
251 const struct lpsc_resource lpsc[] = {
252 { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
253 { DAVINCI_LPSC_SPI1 }, /* Serial Flash */
254 { DAVINCI_LPSC_EMAC }, /* image download */
255 { DAVINCI_LPSC_UART2 }, /* console */
256 { DAVINCI_LPSC_GPIO },
257 #ifdef CONFIG_MMC_DAVINCI
258 { DAVINCI_LPSC_MMC_SD },
262 const int lpsc_size = ARRAY_SIZE(lpsc);
264 #ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
265 #define CONFIG_DA850_EVM_MAX_CPU_CLK 300000000
268 #define REV_AM18X_EVM 0x100
271 * get_board_rev() - setup to pass kernel board revision information
273 * bit[0-3] Maximum cpu clock rate supported by onboard SoC
279 u32 get_board_rev(void)
282 u32 maxcpuclk = CONFIG_DA850_EVM_MAX_CPU_CLK;
285 s = env_get("maxcpuclk");
287 maxcpuclk = dectoul(s, NULL);
289 if (maxcpuclk >= 456000000)
291 else if (maxcpuclk >= 408000000)
293 else if (maxcpuclk >= 372000000)
298 int board_early_init_f(void)
301 * Power on required peripherals
302 * ARM does not have access by default to PSC0 and PSC1
303 * assuming here that the DSP bootloader has set the IOPU
304 * such that PSC access is available to ARM
306 if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
316 #ifdef CONFIG_NAND_DAVINCI
318 * NAND CS setup - cycle counts based on da850evm NAND timings in the
319 * Linux kernel @ 25MHz EMIFA
321 writel((DAVINCI_ABCR_WSETUP(2) |
322 DAVINCI_ABCR_WSTROBE(2) |
323 DAVINCI_ABCR_WHOLD(1) |
324 DAVINCI_ABCR_RSETUP(1) |
325 DAVINCI_ABCR_RSTROBE(4) |
326 DAVINCI_ABCR_RHOLD(0) |
328 DAVINCI_ABCR_ASIZE_8BIT),
329 &davinci_emif_regs->ab2cr); /* CS3 */
332 /* arch number of the board */
333 gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
335 /* address of boot parameters */
336 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
338 /* setup the SUSPSRC for ARM to control emulation suspend */
339 writel(readl(&davinci_syscfg_regs->suspsrc) &
340 ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
341 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
342 DAVINCI_SYSCFG_SUSPSRC_UART2),
343 &davinci_syscfg_regs->suspsrc);
345 #ifdef CONFIG_MTD_NOR_FLASH
346 /* Set the GPIO direction as output */
347 clrbits_le32((u32 *)GPIO_BANK0_REG_DIR_ADDR, (0x01 << 11));
349 /* Set the output as low */
350 writel(0x01 << 11, GPIO_BANK0_REG_CLR_ADDR);
353 #ifdef CONFIG_MMC_DAVINCI
354 /* Set the GPIO direction as output */
355 clrbits_le32((u32 *)GPIO_BANK0_REG_DIR_ADDR, (0x01 << 11));
357 /* Set the output as high */
358 writel(0x01 << 11, GPIO_BANK0_REG_SET_ADDR);
361 #ifdef CONFIG_DRIVER_TI_EMAC
362 davinci_emac_mii_mode_sel(HAS_RMII);
363 #endif /* CONFIG_DRIVER_TI_EMAC */
368 #ifdef CONFIG_DRIVER_TI_EMAC
370 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
374 * DA850/OMAP-L138 EVM can interface to a daughter card for
375 * additional features. This card has an I2C GPIO Expander TCA6416
376 * to select the required functions like camera, RMII Ethernet,
377 * character LCD, video.
379 * Initialization of the expander involves configuring the
380 * polarity and direction of the ports. P07-P05 are used here.
381 * These ports are connected to a Mux chip which enables only one
382 * functionality at a time.
384 * For RMII phy to respond, the MII MDIO clock has to be disabled
385 * since both the PHY devices have address as zero. The MII MDIO
386 * clock is controlled via GPIO2[6].
388 * This code is valid for Beta version of the hardware
390 int rmii_hw_init(void)
392 const struct pinmux_config gpio_pins[] = {
399 /* PinMux for GPIO */
400 if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
403 /* I2C Exapnder configuration */
404 /* Set polarity to non-inverted */
407 ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 4, 1, buf, 2);
409 printf("\nExpander @ 0x%02x write FAILED!!!\n",
410 CONFIG_SYS_I2C_EXPANDER_ADDR);
414 /* Configure P07-P05 as outputs */
417 ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 6, 1, buf, 2);
419 printf("\nExpander @ 0x%02x write FAILED!!!\n",
420 CONFIG_SYS_I2C_EXPANDER_ADDR);
423 /* For Ethernet RMII selection
428 if (i2c_read(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) {
429 printf("\nExpander @ 0x%02x read FAILED!!!\n",
430 CONFIG_SYS_I2C_EXPANDER_ADDR);
434 buf[0] |= (0 << 7) | (1 << 6) | (1 << 5);
435 if (i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) {
436 printf("\nExpander @ 0x%02x write FAILED!!!\n",
437 CONFIG_SYS_I2C_EXPANDER_ADDR);
440 /* Set the output as high */
441 temp = REG(GPIO_BANK2_REG_SET_ADDR);
443 REG(GPIO_BANK2_REG_SET_ADDR) = temp;
445 /* Set the GPIO direction as output */
446 temp = REG(GPIO_BANK2_REG_DIR_ADDR);
447 temp &= ~(0x01 << 6);
448 REG(GPIO_BANK2_REG_DIR_ADDR) = temp;
452 #endif /* CONFIG_DRIVER_TI_EMAC_USE_RMII */
455 * Initializes on-board ethernet controllers.
457 int board_eth_init(struct bd_info *bis)
459 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
460 /* Select RMII fucntion through the expander */
462 printf("RMII hardware init failed!!!\n");
466 #endif /* CONFIG_DRIVER_TI_EMAC */