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_env_get_enetaddr("ethaddr", env_enetaddr
);
138 #ifdef CONFIG_MAC_ADDR_IN_SPIFLASH
142 spi_mac_read
= get_mac_addr(buff
);
145 * MAC address not present in the environment
146 * try and read the MAC address from SPI flash
149 if (!enetaddr_found
) {
151 if (is_valid_ethaddr(buff
)) {
152 if (eth_env_set_enetaddr("ethaddr", buff
)) {
153 printf("Warning: Failed to "
154 "set MAC address from SPI flash\n");
157 printf("Warning: Invalid "
158 "MAC address read from SPI flash\n");
163 * MAC address present in environment compare it with
164 * the MAC address in SPI flash and warn on mismatch
166 if (!spi_mac_read
&& is_valid_ethaddr(buff
) &&
167 memcmp(env_enetaddr
, buff
, 6))
168 printf("Warning: MAC address in SPI flash don't match "
169 "with the MAC address in the environment\n");
170 printf("Default using MAC address from environment\n");
173 #elif defined(CONFIG_MAC_ADDR_IN_EEPROM)
177 /* Read Ethernet MAC address from EEPROM */
178 eeprom_mac_read
= dvevm_read_mac_address(enetaddr
);
181 * MAC address not present in the environment
182 * try and read the MAC address from EEPROM flash
185 if (!enetaddr_found
) {
187 /* Set Ethernet MAC address from EEPROM */
188 davinci_sync_env_enetaddr(enetaddr
);
191 * MAC address present in environment compare it with
192 * the MAC address in EEPROM and warn on mismatch
194 if (eeprom_mac_read
&& memcmp(enetaddr
, env_enetaddr
, 6))
195 printf("Warning: MAC address in EEPROM don't match "
196 "with the MAC address in the environment\n");
197 printf("Default using MAC address from environment\n");
204 #ifdef CONFIG_MMC_DAVINCI
205 static struct davinci_mmc mmc_sd0
= {
206 .reg_base
= (struct davinci_mmc_regs
*)DAVINCI_MMC_SD0_BASE
,
207 .host_caps
= MMC_MODE_4BIT
, /* DA850 supports only 4-bit SD/MMC */
208 .voltages
= MMC_VDD_32_33
| MMC_VDD_33_34
,
209 .version
= MMC_CTLR_VERSION_2
,
212 int board_mmc_init(bd_t
*bis
)
214 mmc_sd0
.input_clk
= clk_get(DAVINCI_MMCSD_CLKID
);
216 /* Add slot-0 to mmc subsystem */
217 return davinci_mmc_init(bis
, &mmc_sd0
);
221 static const struct pinmux_config gpio_pins
[] = {
222 #ifdef CONFIG_USE_NOR
223 /* GP0[11] is required for NOR to work on Rev 3 EVMs */
224 { pinmux(0), 8, 4 }, /* GP0[11] */
226 #ifdef CONFIG_MMC_DAVINCI
227 /* GP0[11] is required for SD to work on Rev 3 EVMs */
228 { pinmux(0), 8, 4 }, /* GP0[11] */
232 const struct pinmux_resource pinmuxes
[] = {
233 #ifdef CONFIG_DRIVER_TI_EMAC
234 PINMUX_ITEM(emac_pins_mdio
),
235 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
236 PINMUX_ITEM(emac_pins_rmii
),
238 PINMUX_ITEM(emac_pins_mii
),
241 #ifdef CONFIG_SPI_FLASH
242 PINMUX_ITEM(spi1_pins_base
),
243 PINMUX_ITEM(spi1_pins_scs0
),
245 PINMUX_ITEM(uart2_pins_txrx
),
246 PINMUX_ITEM(uart2_pins_rtscts
),
247 PINMUX_ITEM(i2c0_pins
),
248 #ifdef CONFIG_NAND_DAVINCI
249 PINMUX_ITEM(emifa_pins_cs3
),
250 PINMUX_ITEM(emifa_pins_cs4
),
251 PINMUX_ITEM(emifa_pins_nand
),
252 #elif defined(CONFIG_USE_NOR)
253 PINMUX_ITEM(emifa_pins_cs2
),
254 PINMUX_ITEM(emifa_pins_nor
),
256 PINMUX_ITEM(gpio_pins
),
257 #ifdef CONFIG_MMC_DAVINCI
258 PINMUX_ITEM(mmc0_pins
),
262 const int pinmuxes_size
= ARRAY_SIZE(pinmuxes
);
264 const struct lpsc_resource lpsc
[] = {
265 { DAVINCI_LPSC_AEMIF
}, /* NAND, NOR */
266 { DAVINCI_LPSC_SPI1
}, /* Serial Flash */
267 { DAVINCI_LPSC_EMAC
}, /* image download */
268 { DAVINCI_LPSC_UART2
}, /* console */
269 { DAVINCI_LPSC_GPIO
},
270 #ifdef CONFIG_MMC_DAVINCI
271 { DAVINCI_LPSC_MMC_SD
},
275 const int lpsc_size
= ARRAY_SIZE(lpsc
);
277 #ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
278 #define CONFIG_DA850_EVM_MAX_CPU_CLK 300000000
281 #define REV_AM18X_EVM 0x100
284 * get_board_rev() - setup to pass kernel board revision information
286 * bit[0-3] Maximum cpu clock rate supported by onboard SoC
292 u32
get_board_rev(void)
295 u32 maxcpuclk
= CONFIG_DA850_EVM_MAX_CPU_CLK
;
298 s
= env_get("maxcpuclk");
300 maxcpuclk
= simple_strtoul(s
, NULL
, 10);
302 if (maxcpuclk
>= 456000000)
304 else if (maxcpuclk
>= 408000000)
306 else if (maxcpuclk
>= 372000000)
308 #ifdef CONFIG_DA850_AM18X_EVM
309 rev
|= REV_AM18X_EVM
;
314 int board_early_init_f(void)
317 * Power on required peripherals
318 * ARM does not have access by default to PSC0 and PSC1
319 * assuming here that the DSP bootloader has set the IOPU
320 * such that PSC access is available to ARM
322 if (da8xx_configure_lpsc_items(lpsc
, ARRAY_SIZE(lpsc
)))
332 #ifdef CONFIG_NAND_DAVINCI
334 * NAND CS setup - cycle counts based on da850evm NAND timings in the
335 * Linux kernel @ 25MHz EMIFA
337 writel((DAVINCI_ABCR_WSETUP(2) |
338 DAVINCI_ABCR_WSTROBE(2) |
339 DAVINCI_ABCR_WHOLD(1) |
340 DAVINCI_ABCR_RSETUP(1) |
341 DAVINCI_ABCR_RSTROBE(4) |
342 DAVINCI_ABCR_RHOLD(0) |
344 DAVINCI_ABCR_ASIZE_8BIT
),
345 &davinci_emif_regs
->ab2cr
); /* CS3 */
348 /* arch number of the board */
349 gd
->bd
->bi_arch_number
= MACH_TYPE_DAVINCI_DA850_EVM
;
351 /* address of boot parameters */
352 gd
->bd
->bi_boot_params
= LINUX_BOOT_PARAM_ADDR
;
354 /* setup the SUSPSRC for ARM to control emulation suspend */
355 writel(readl(&davinci_syscfg_regs
->suspsrc
) &
356 ~(DAVINCI_SYSCFG_SUSPSRC_EMAC
| DAVINCI_SYSCFG_SUSPSRC_I2C
|
357 DAVINCI_SYSCFG_SUSPSRC_SPI1
| DAVINCI_SYSCFG_SUSPSRC_TIMER0
|
358 DAVINCI_SYSCFG_SUSPSRC_UART2
),
359 &davinci_syscfg_regs
->suspsrc
);
361 /* configure pinmux settings */
362 if (davinci_configure_pin_mux_items(pinmuxes
, ARRAY_SIZE(pinmuxes
)))
365 #ifdef CONFIG_USE_NOR
366 /* Set the GPIO direction as output */
367 clrbits_le32((u32
*)GPIO_BANK0_REG_DIR_ADDR
, (0x01 << 11));
369 /* Set the output as low */
370 writel(0x01 << 11, GPIO_BANK0_REG_CLR_ADDR
);
373 #ifdef CONFIG_MMC_DAVINCI
374 /* Set the GPIO direction as output */
375 clrbits_le32((u32
*)GPIO_BANK0_REG_DIR_ADDR
, (0x01 << 11));
377 /* Set the output as high */
378 writel(0x01 << 11, GPIO_BANK0_REG_SET_ADDR
);
381 #ifdef CONFIG_DRIVER_TI_EMAC
382 davinci_emac_mii_mode_sel(HAS_RMII
);
383 #endif /* CONFIG_DRIVER_TI_EMAC */
385 /* enable the console UART */
386 writel((DAVINCI_UART_PWREMU_MGMT_FREE
| DAVINCI_UART_PWREMU_MGMT_URRST
|
387 DAVINCI_UART_PWREMU_MGMT_UTRST
),
388 &davinci_uart2_ctrl_regs
->pwremu_mgmt
);
393 #ifdef CONFIG_DRIVER_TI_EMAC
395 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
399 * DA850/OMAP-L138 EVM can interface to a daughter card for
400 * additional features. This card has an I2C GPIO Expander TCA6416
401 * to select the required functions like camera, RMII Ethernet,
402 * character LCD, video.
404 * Initialization of the expander involves configuring the
405 * polarity and direction of the ports. P07-P05 are used here.
406 * These ports are connected to a Mux chip which enables only one
407 * functionality at a time.
409 * For RMII phy to respond, the MII MDIO clock has to be disabled
410 * since both the PHY devices have address as zero. The MII MDIO
411 * clock is controlled via GPIO2[6].
413 * This code is valid for Beta version of the hardware
415 int rmii_hw_init(void)
417 const struct pinmux_config gpio_pins
[] = {
424 /* PinMux for GPIO */
425 if (davinci_configure_pin_mux(gpio_pins
, ARRAY_SIZE(gpio_pins
)) != 0)
428 /* I2C Exapnder configuration */
429 /* Set polarity to non-inverted */
432 ret
= i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR
, 4, 1, buf
, 2);
434 printf("\nExpander @ 0x%02x write FAILED!!!\n",
435 CONFIG_SYS_I2C_EXPANDER_ADDR
);
439 /* Configure P07-P05 as outputs */
442 ret
= i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR
, 6, 1, buf
, 2);
444 printf("\nExpander @ 0x%02x write FAILED!!!\n",
445 CONFIG_SYS_I2C_EXPANDER_ADDR
);
448 /* For Ethernet RMII selection
453 if (i2c_read(CONFIG_SYS_I2C_EXPANDER_ADDR
, 2, 1, buf
, 1)) {
454 printf("\nExpander @ 0x%02x read FAILED!!!\n",
455 CONFIG_SYS_I2C_EXPANDER_ADDR
);
459 buf
[0] |= (0 << 7) | (1 << 6) | (1 << 5);
460 if (i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR
, 2, 1, buf
, 1)) {
461 printf("\nExpander @ 0x%02x write FAILED!!!\n",
462 CONFIG_SYS_I2C_EXPANDER_ADDR
);
465 /* Set the output as high */
466 temp
= REG(GPIO_BANK2_REG_SET_ADDR
);
468 REG(GPIO_BANK2_REG_SET_ADDR
) = temp
;
470 /* Set the GPIO direction as output */
471 temp
= REG(GPIO_BANK2_REG_DIR_ADDR
);
472 temp
&= ~(0x01 << 6);
473 REG(GPIO_BANK2_REG_DIR_ADDR
) = temp
;
477 #endif /* CONFIG_DRIVER_TI_EMAC_USE_RMII */
480 * Initializes on-board ethernet controllers.
482 int board_eth_init(bd_t
*bis
)
484 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
485 /* Select RMII fucntion through the expander */
487 printf("RMII hardware init failed!!!\n");
489 if (!davinci_emac_initialize()) {
490 printf("Error: Ethernet init failed!\n");
496 #endif /* CONFIG_DRIVER_TI_EMAC */