1 /*
2  * (C) Copyright 2014
3  * Heiko Schocher, DENX Software Engineering, hs@denx.de.
4  *
5  * Based on:
6  * Copyright (C) 2012 Freescale Semiconductor, Inc.
7  *
8  * Author: Fabio Estevam <fabio.estevam@freescale.com>
9  *
10  * SPDX-License-Identifier:	GPL-2.0+
11  */
12 
13 #include <asm/arch/clock.h>
14 #include <asm/arch/imx-regs.h>
15 #include <asm/arch/iomux.h>
16 #include <asm/arch/mx6-pins.h>
17 #include <linux/errno.h>
18 #include <asm/gpio.h>
19 #include <asm/imx-common/iomux-v3.h>
20 #include <asm/imx-common/boot_mode.h>
21 #include <asm/imx-common/mxc_i2c.h>
22 #include <asm/imx-common/video.h>
23 #include <mmc.h>
24 #include <fsl_esdhc.h>
25 #include <miiphy.h>
26 #include <netdev.h>
27 #include <asm/arch/mxc_hdmi.h>
28 #include <asm/arch/crm_regs.h>
29 #include <linux/fb.h>
30 #include <ipu_pixfmt.h>
31 #include <asm/io.h>
32 #include <asm/arch/sys_proto.h>
33 #include <pwm.h>
34 
35 DECLARE_GLOBAL_DATA_PTR;
36 
37 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
38 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
39 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
40 
41 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |			\
42 	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
43 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
44 
45 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
46 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
47 
48 #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
49 		      PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
50 
51 #define I2C_PAD_CTRL	(PAD_CTL_PUS_100K_UP |			\
52 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |	\
53 	PAD_CTL_ODE | PAD_CTL_SRE_FAST)
54 
55 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
56 
57 #define DISP_PAD_CTRL	(0x10)
58 
59 #define ECSPI4_CS1		IMX_GPIO_NR(5, 2)
60 
61 #if (CONFIG_SYS_BOARD_VERSION == 1)
62 #include "./aristainetos-v1.c"
63 #elif ((CONFIG_SYS_BOARD_VERSION == 2) || (CONFIG_SYS_BOARD_VERSION == 3))
64 #include "./aristainetos-v2.c"
65 #endif
66 
67 
68 struct i2c_pads_info i2c_pad_info1 = {
69 	.scl = {
70 		.i2c_mode = MX6_PAD_CSI0_DAT9__I2C1_SCL | PC,
71 		.gpio_mode = MX6_PAD_CSI0_DAT9__GPIO5_IO27 | PC,
72 		.gp = IMX_GPIO_NR(5, 27)
73 	},
74 	.sda = {
75 		.i2c_mode = MX6_PAD_CSI0_DAT8__I2C1_SDA | PC,
76 		.gpio_mode = MX6_PAD_CSI0_DAT8__GPIO5_IO26 | PC,
77 		.gp = IMX_GPIO_NR(5, 26)
78 	}
79 };
80 
81 struct i2c_pads_info i2c_pad_info2 = {
82 	.scl = {
83 		.i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL | PC,
84 		.gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12 | PC,
85 		.gp = IMX_GPIO_NR(4, 12)
86 	},
87 	.sda = {
88 		.i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC,
89 		.gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13 | PC,
90 		.gp = IMX_GPIO_NR(4, 13)
91 	}
92 };
93 
94 iomux_v3_cfg_t const usdhc1_pads[] = {
95 	MX6_PAD_SD1_CLK__SD1_CLK	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
96 	MX6_PAD_SD1_CMD__SD1_CMD	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
97 	MX6_PAD_SD1_DAT0__SD1_DATA0	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
98 	MX6_PAD_SD1_DAT1__SD1_DATA1	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
99 	MX6_PAD_SD1_DAT2__SD1_DATA2	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
100 	MX6_PAD_SD1_DAT3__SD1_DATA3	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
101 };
102 
103 int dram_init(void)
104 {
105 	gd->ram_size = imx_ddr_size();
106 
107 	return 0;
108 }
109 
110 #ifdef CONFIG_FSL_ESDHC
111 struct fsl_esdhc_cfg usdhc_cfg[2] = {
112 	{USDHC1_BASE_ADDR},
113 	{USDHC2_BASE_ADDR},
114 };
115 
116 int board_mmc_getcd(struct mmc *mmc)
117 {
118 	return 1;
119 }
120 
121 int board_mmc_init(bd_t *bis)
122 {
123 	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
124 	imx_iomux_v3_setup_multiple_pads(usdhc1_pads, ARRAY_SIZE(usdhc1_pads));
125 #if (CONFIG_SYS_BOARD_VERSION == 2)
126 	/*
127 	 * usdhc2 has a levelshifter on the carrier board Rev. DV1,
128 	 * that will automatically detect the driving direction.
129 	 * During initialisation this isn't working correctly,
130 	 * which causes DAT3 to be driven low towards the SD-card.
131 	 * This causes a SD-card enetring the SPI-Mode
132 	 * and therefore getting inaccessible until next power cycle.
133 	 * As workaround we drive the DAT3 line as GPIO and set it high.
134 	 * This makes usdhc2 unusable in u-boot, but works for the
135 	 * initialisation in Linux
136 	 */
137 	imx_iomux_v3_setup_pad(MX6_PAD_SD2_DAT3__GPIO1_IO12 |
138 			       MUX_PAD_CTRL(NO_PAD_CTRL));
139 	gpio_direction_output(IMX_GPIO_NR(1, 12) , 1);
140 #endif
141 	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
142 }
143 #endif
144 
145 /*
146  * Do not overwrite the console
147  * Use always serial for U-Boot console
148  */
149 int overwrite_console(void)
150 {
151 	return 1;
152 }
153 
154 struct display_info_t const displays[] = {
155 	{
156 		.bus	= -1,
157 		.addr	= 0,
158 		.pixfmt	= IPU_PIX_FMT_RGB24,
159 		.detect	= NULL,
160 		.enable	= enable_lvds,
161 		.mode	= {
162 			.name           = "lb07wv8",
163 			.refresh        = 60,
164 			.xres           = 800,
165 			.yres           = 480,
166 			.pixclock       = 30066,
167 			.left_margin    = 88,
168 			.right_margin   = 88,
169 			.upper_margin   = 20,
170 			.lower_margin   = 20,
171 			.hsync_len      = 80,
172 			.vsync_len      = 5,
173 			.sync           = FB_SYNC_EXT,
174 			.vmode          = FB_VMODE_NONINTERLACED
175 		}
176 	}
177 #if ((CONFIG_SYS_BOARD_VERSION == 2) || (CONFIG_SYS_BOARD_VERSION == 3))
178 	, {
179 		.bus	= -1,
180 		.addr	= 0,
181 		.pixfmt	= IPU_PIX_FMT_RGB24,
182 		.detect	= NULL,
183 		.enable	= enable_spi_display,
184 		.mode	= {
185 			.name           = "lg4573",
186 			.refresh        = 57,
187 			.xres           = 480,
188 			.yres           = 800,
189 			.pixclock       = 37037,
190 			.left_margin    = 59,
191 			.right_margin   = 10,
192 			.upper_margin   = 15,
193 			.lower_margin   = 15,
194 			.hsync_len      = 10,
195 			.vsync_len      = 15,
196 			.sync           = FB_SYNC_EXT | FB_SYNC_HOR_HIGH_ACT |
197 					  FB_SYNC_VERT_HIGH_ACT,
198 			.vmode          = FB_VMODE_NONINTERLACED
199 		}
200 	}
201 #endif
202 };
203 size_t display_count = ARRAY_SIZE(displays);
204 
205 /* no console on this board */
206 int board_cfb_skip(void)
207 {
208 	return 1;
209 }
210 
211 iomux_v3_cfg_t nfc_pads[] = {
212 	MX6_PAD_NANDF_CLE__NAND_CLE		| MUX_PAD_CTRL(NO_PAD_CTRL),
213 	MX6_PAD_NANDF_ALE__NAND_ALE		| MUX_PAD_CTRL(NO_PAD_CTRL),
214 	MX6_PAD_NANDF_WP_B__NAND_WP_B	| MUX_PAD_CTRL(NO_PAD_CTRL),
215 	MX6_PAD_NANDF_RB0__NAND_READY_B	| MUX_PAD_CTRL(NO_PAD_CTRL),
216 	MX6_PAD_NANDF_CS0__NAND_CE0_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
217 	MX6_PAD_SD4_CMD__NAND_RE_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
218 	MX6_PAD_SD4_CLK__NAND_WE_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
219 	MX6_PAD_NANDF_D0__NAND_DATA00		| MUX_PAD_CTRL(NO_PAD_CTRL),
220 	MX6_PAD_NANDF_D1__NAND_DATA01		| MUX_PAD_CTRL(NO_PAD_CTRL),
221 	MX6_PAD_NANDF_D2__NAND_DATA02		| MUX_PAD_CTRL(NO_PAD_CTRL),
222 	MX6_PAD_NANDF_D3__NAND_DATA03		| MUX_PAD_CTRL(NO_PAD_CTRL),
223 	MX6_PAD_NANDF_D4__NAND_DATA04		| MUX_PAD_CTRL(NO_PAD_CTRL),
224 	MX6_PAD_NANDF_D5__NAND_DATA05		| MUX_PAD_CTRL(NO_PAD_CTRL),
225 	MX6_PAD_NANDF_D6__NAND_DATA06		| MUX_PAD_CTRL(NO_PAD_CTRL),
226 	MX6_PAD_NANDF_D7__NAND_DATA07		| MUX_PAD_CTRL(NO_PAD_CTRL),
227 	MX6_PAD_SD4_DAT0__NAND_DQS		| MUX_PAD_CTRL(NO_PAD_CTRL),
228 };
229 
230 static void setup_gpmi_nand(void)
231 {
232 	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
233 
234 	/* config gpmi nand iomux */
235 	imx_iomux_v3_setup_multiple_pads(nfc_pads,
236 					 ARRAY_SIZE(nfc_pads));
237 
238 	/* gate ENFC_CLK_ROOT clock first,before clk source switch */
239 	clrbits_le32(&mxc_ccm->CCGR2, MXC_CCM_CCGR2_IOMUX_IPT_CLK_IO_MASK);
240 
241 	/* config gpmi and bch clock to 100 MHz */
242 	clrsetbits_le32(&mxc_ccm->cs2cdr,
243 			MXC_CCM_CS2CDR_ENFC_CLK_PODF_MASK |
244 			MXC_CCM_CS2CDR_ENFC_CLK_PRED_MASK |
245 			MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK,
246 			MXC_CCM_CS2CDR_ENFC_CLK_PODF(0) |
247 			MXC_CCM_CS2CDR_ENFC_CLK_PRED(3) |
248 			MXC_CCM_CS2CDR_ENFC_CLK_SEL(3));
249 
250 	/* enable ENFC_CLK_ROOT clock */
251 	setbits_le32(&mxc_ccm->CCGR2, MXC_CCM_CCGR2_IOMUX_IPT_CLK_IO_MASK);
252 
253 	/* enable gpmi and bch clock gating */
254 	setbits_le32(&mxc_ccm->CCGR4,
255 		     MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
256 		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
257 		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
258 		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
259 		     MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_OFFSET);
260 
261 	/* enable apbh clock gating */
262 	setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK);
263 }
264 
265 int board_init(void)
266 {
267 	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
268 
269 	/* address of boot parameters */
270 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
271 
272 	setup_spi();
273 
274 	setup_i2c(0, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE,
275 		  &i2c_pad_info1);
276 	setup_i2c(1, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE,
277 		  &i2c_pad_info2);
278 	setup_i2c(2, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE,
279 		  &i2c_pad_info3);
280 	setup_i2c4();
281 
282 	/* SPI NOR Flash read only */
283 	gpio_request(CONFIG_GPIO_ENABLE_SPI_FLASH, "ena_spi_nor");
284 	gpio_direction_output(CONFIG_GPIO_ENABLE_SPI_FLASH, 0);
285 	gpio_free(CONFIG_GPIO_ENABLE_SPI_FLASH);
286 
287 	setup_board_gpio();
288 	setup_gpmi_nand();
289 	setup_board_spi();
290 
291 	/* GPIO_1 for USB_OTG_ID */
292 	clrsetbits_le32(&iomux->gpr[1], IOMUXC_GPR1_USB_OTG_ID_SEL_MASK, 0);
293 	imx_iomux_v3_setup_multiple_pads(misc_pads, ARRAY_SIZE(misc_pads));
294 	return 0;
295 }
296 
297 int checkboard(void)
298 {
299 	printf("Board: %s\n", CONFIG_BOARDNAME);
300 	return 0;
301 }
302 
303 #ifdef CONFIG_USB_EHCI_MX6
304 int board_ehci_hcd_init(int port)
305 {
306 	int ret;
307 
308 	ret = gpio_request(ARISTAINETOS_USB_H1_PWR, "usb-h1-pwr");
309 	if (!ret)
310 		gpio_direction_output(ARISTAINETOS_USB_H1_PWR, 1);
311 	ret = gpio_request(ARISTAINETOS_USB_OTG_PWR, "usb-OTG-pwr");
312 	if (!ret)
313 		gpio_direction_output(ARISTAINETOS_USB_OTG_PWR, 1);
314 	return 0;
315 }
316 
317 int board_ehci_power(int port, int on)
318 {
319 	if (port)
320 		gpio_set_value(ARISTAINETOS_USB_OTG_PWR, on);
321 	else
322 		gpio_set_value(ARISTAINETOS_USB_H1_PWR, on);
323 	return 0;
324 }
325 #endif
326