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mx6cuboxi: Differentiate Cubox-i and Hummingboard
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1 /*
2 * Copyright (C) 2015 Freescale Semiconductor, Inc.
3 *
4 * Author: Fabio Estevam <fabio.estevam@freescale.com>
5 *
6 * Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>
7 *
8 * Based on SPL code from Solidrun tree, which is:
9 * Author: Tungyi Lin <tungyilin1127@gmail.com>
10 *
11 * Derived from EDM_CF_IMX6 code by TechNexion,Inc
12 * Ported to SolidRun microSOM by Rabeeh Khoury <rabeeh@solid-run.com>
13 *
14 * SPDX-License-Identifier: GPL-2.0+
15 */
16
17 #include <asm/arch/clock.h>
18 #include <asm/arch/imx-regs.h>
19 #include <asm/arch/iomux.h>
20 #include <asm/arch/mx6-pins.h>
21 #include <asm/errno.h>
22 #include <asm/gpio.h>
23 #include <asm/imx-common/iomux-v3.h>
24 #include <mmc.h>
25 #include <fsl_esdhc.h>
26 #include <miiphy.h>
27 #include <netdev.h>
28 #include <asm/arch/crm_regs.h>
29 #include <asm/io.h>
30 #include <asm/arch/sys_proto.h>
31 #include <spl.h>
32
33 DECLARE_GLOBAL_DATA_PTR;
34
35 #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
36 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
37 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
38
39 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
40 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
41 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
42
43 #define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
44 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
45
46 #define ENET_PAD_CTRL_PD (PAD_CTL_PUS_100K_DOWN | \
47 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
48
49 #define ENET_PAD_CTRL_CLK ((PAD_CTL_PUS_100K_UP & ~PAD_CTL_PKE) | \
50 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
51
52 #define ETH_PHY_RESET IMX_GPIO_NR(4, 15)
53
54 int dram_init(void)
55 {
56 gd->ram_size = imx_ddr_size();
57 return 0;
58 }
59
60 static iomux_v3_cfg_t const uart1_pads[] = {
61 IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
62 IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
63 };
64
65 static iomux_v3_cfg_t const usdhc2_pads[] = {
66 IOMUX_PADS(PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
67 IOMUX_PADS(PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
68 IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
69 IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
70 IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
71 IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
72 };
73
74 static iomux_v3_cfg_t const hb_cbi_sense[] = {
75 /* These pins are for sensing if it is a CuBox-i or a HummingBoard */
76 IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(UART_PAD_CTRL)),
77 IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)),
78 };
79
80 static void setup_iomux_uart(void)
81 {
82 SETUP_IOMUX_PADS(uart1_pads);
83 }
84
85 static struct fsl_esdhc_cfg usdhc_cfg[1] = {
86 {USDHC2_BASE_ADDR},
87 };
88
89 int board_mmc_getcd(struct mmc *mmc)
90 {
91 return 1; /* uSDHC2 is always present */
92 }
93
94 int board_mmc_init(bd_t *bis)
95 {
96 SETUP_IOMUX_PADS(usdhc2_pads);
97 usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;
98 usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
99 gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
100
101 return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
102 }
103
104 static iomux_v3_cfg_t const enet_pads[] = {
105 IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)),
106 IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
107 /* AR8035 reset */
108 IOMUX_PADS(PAD_KEY_ROW4__GPIO4_IO15 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
109 /* AR8035 interrupt */
110 IOMUX_PADS(PAD_DI0_PIN2__GPIO4_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL)),
111 /* GPIO16 -> AR8035 25MHz */
112 IOMUX_PADS(PAD_GPIO_16__ENET_REF_CLK | MUX_PAD_CTRL(NO_PAD_CTRL)),
113 IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(NO_PAD_CTRL)),
114 IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
115 IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
116 IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
117 IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
118 IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
119 /* AR8035 CLK_25M --> ENET_REF_CLK (V22) */
120 IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL_CLK)),
121 IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
122 IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
123 IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
124 IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
125 IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
126 IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
127 };
128
129 static void setup_iomux_enet(void)
130 {
131 SETUP_IOMUX_PADS(enet_pads);
132
133 gpio_direction_output(ETH_PHY_RESET, 0);
134 mdelay(2);
135 gpio_set_value(ETH_PHY_RESET, 1);
136 }
137
138 int board_phy_config(struct phy_device *phydev)
139 {
140 if (phydev->drv->config)
141 phydev->drv->config(phydev);
142
143 return 0;
144 }
145
146 int board_eth_init(bd_t *bis)
147 {
148 struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
149
150 int ret = enable_fec_anatop_clock(ENET_25MHZ);
151 if (ret)
152 return ret;
153
154 /* set gpr1[ENET_CLK_SEL] */
155 setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);
156
157 setup_iomux_enet();
158
159 return cpu_eth_init(bis);
160 }
161
162 int board_early_init_f(void)
163 {
164 setup_iomux_uart();
165 return 0;
166 }
167
168 int board_init(void)
169 {
170 /* address of boot parameters */
171 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
172
173 return 0;
174 }
175
176 static bool is_hummingboard(void)
177 {
178 int val1, val2;
179
180 SETUP_IOMUX_PADS(hb_cbi_sense);
181
182 gpio_direction_input(IMX_GPIO_NR(4, 9));
183 gpio_direction_input(IMX_GPIO_NR(3, 4));
184
185 val1 = gpio_get_value(IMX_GPIO_NR(4, 9));
186 val2 = gpio_get_value(IMX_GPIO_NR(3, 4));
187
188 /*
189 * Machine selection -
190 * Machine val1, val2
191 * -------------------------
192 * HB rev 3.x x 0
193 * CBi 0 1
194 * HB 1 1
195 */
196
197 if (val2 == 0)
198 return true;
199 else if (val1 == 0)
200 return false;
201 else
202 return true;
203 }
204
205 int checkboard(void)
206 {
207 if (is_hummingboard())
208 puts("Board: MX6 Hummingboard\n");
209 else
210 puts("Board: MX6 Cubox-i\n");
211
212 return 0;
213 }
214
215 #ifdef CONFIG_SPL_BUILD
216 #include <asm/arch/mx6-ddr.h>
217 static const struct mx6dq_iomux_ddr_regs mx6q_ddr_ioregs = {
218 .dram_sdclk_0 = 0x00020030,
219 .dram_sdclk_1 = 0x00020030,
220 .dram_cas = 0x00020030,
221 .dram_ras = 0x00020030,
222 .dram_reset = 0x00020030,
223 .dram_sdcke0 = 0x00003000,
224 .dram_sdcke1 = 0x00003000,
225 .dram_sdba2 = 0x00000000,
226 .dram_sdodt0 = 0x00003030,
227 .dram_sdodt1 = 0x00003030,
228 .dram_sdqs0 = 0x00000030,
229 .dram_sdqs1 = 0x00000030,
230 .dram_sdqs2 = 0x00000030,
231 .dram_sdqs3 = 0x00000030,
232 .dram_sdqs4 = 0x00000030,
233 .dram_sdqs5 = 0x00000030,
234 .dram_sdqs6 = 0x00000030,
235 .dram_sdqs7 = 0x00000030,
236 .dram_dqm0 = 0x00020030,
237 .dram_dqm1 = 0x00020030,
238 .dram_dqm2 = 0x00020030,
239 .dram_dqm3 = 0x00020030,
240 .dram_dqm4 = 0x00020030,
241 .dram_dqm5 = 0x00020030,
242 .dram_dqm6 = 0x00020030,
243 .dram_dqm7 = 0x00020030,
244 };
245
246 static const struct mx6sdl_iomux_ddr_regs mx6dl_ddr_ioregs = {
247 .dram_sdclk_0 = 0x00000028,
248 .dram_sdclk_1 = 0x00000028,
249 .dram_cas = 0x00000028,
250 .dram_ras = 0x00000028,
251 .dram_reset = 0x000c0028,
252 .dram_sdcke0 = 0x00003000,
253 .dram_sdcke1 = 0x00003000,
254 .dram_sdba2 = 0x00000000,
255 .dram_sdodt0 = 0x00003030,
256 .dram_sdodt1 = 0x00003030,
257 .dram_sdqs0 = 0x00000028,
258 .dram_sdqs1 = 0x00000028,
259 .dram_sdqs2 = 0x00000028,
260 .dram_sdqs3 = 0x00000028,
261 .dram_sdqs4 = 0x00000028,
262 .dram_sdqs5 = 0x00000028,
263 .dram_sdqs6 = 0x00000028,
264 .dram_sdqs7 = 0x00000028,
265 .dram_dqm0 = 0x00000028,
266 .dram_dqm1 = 0x00000028,
267 .dram_dqm2 = 0x00000028,
268 .dram_dqm3 = 0x00000028,
269 .dram_dqm4 = 0x00000028,
270 .dram_dqm5 = 0x00000028,
271 .dram_dqm6 = 0x00000028,
272 .dram_dqm7 = 0x00000028,
273 };
274
275 static const struct mx6dq_iomux_grp_regs mx6q_grp_ioregs = {
276 .grp_ddr_type = 0x000C0000,
277 .grp_ddrmode_ctl = 0x00020000,
278 .grp_ddrpke = 0x00000000,
279 .grp_addds = 0x00000030,
280 .grp_ctlds = 0x00000030,
281 .grp_ddrmode = 0x00020000,
282 .grp_b0ds = 0x00000030,
283 .grp_b1ds = 0x00000030,
284 .grp_b2ds = 0x00000030,
285 .grp_b3ds = 0x00000030,
286 .grp_b4ds = 0x00000030,
287 .grp_b5ds = 0x00000030,
288 .grp_b6ds = 0x00000030,
289 .grp_b7ds = 0x00000030,
290 };
291
292 static const struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
293 .grp_ddr_type = 0x000c0000,
294 .grp_ddrmode_ctl = 0x00020000,
295 .grp_ddrpke = 0x00000000,
296 .grp_addds = 0x00000028,
297 .grp_ctlds = 0x00000028,
298 .grp_ddrmode = 0x00020000,
299 .grp_b0ds = 0x00000028,
300 .grp_b1ds = 0x00000028,
301 .grp_b2ds = 0x00000028,
302 .grp_b3ds = 0x00000028,
303 .grp_b4ds = 0x00000028,
304 .grp_b5ds = 0x00000028,
305 .grp_b6ds = 0x00000028,
306 .grp_b7ds = 0x00000028,
307 };
308
309 /* microSOM with Dual processor and 1GB memory */
310 static const struct mx6_mmdc_calibration mx6q_1g_mmcd_calib = {
311 .p0_mpwldectrl0 = 0x00000000,
312 .p0_mpwldectrl1 = 0x00000000,
313 .p1_mpwldectrl0 = 0x00000000,
314 .p1_mpwldectrl1 = 0x00000000,
315 .p0_mpdgctrl0 = 0x0314031c,
316 .p0_mpdgctrl1 = 0x023e0304,
317 .p1_mpdgctrl0 = 0x03240330,
318 .p1_mpdgctrl1 = 0x03180260,
319 .p0_mprddlctl = 0x3630323c,
320 .p1_mprddlctl = 0x3436283a,
321 .p0_mpwrdlctl = 0x36344038,
322 .p1_mpwrdlctl = 0x422a423c,
323 };
324
325 /* microSOM with Quad processor and 2GB memory */
326 static const struct mx6_mmdc_calibration mx6q_2g_mmcd_calib = {
327 .p0_mpwldectrl0 = 0x00000000,
328 .p0_mpwldectrl1 = 0x00000000,
329 .p1_mpwldectrl0 = 0x00000000,
330 .p1_mpwldectrl1 = 0x00000000,
331 .p0_mpdgctrl0 = 0x0314031c,
332 .p0_mpdgctrl1 = 0x023e0304,
333 .p1_mpdgctrl0 = 0x03240330,
334 .p1_mpdgctrl1 = 0x03180260,
335 .p0_mprddlctl = 0x3630323c,
336 .p1_mprddlctl = 0x3436283a,
337 .p0_mpwrdlctl = 0x36344038,
338 .p1_mpwrdlctl = 0x422a423c,
339 };
340
341 /* microSOM with Solo processor and 512MB memory */
342 static const struct mx6_mmdc_calibration mx6dl_512m_mmcd_calib = {
343 .p0_mpwldectrl0 = 0x0045004D,
344 .p0_mpwldectrl1 = 0x003A0047,
345 .p0_mpdgctrl0 = 0x023C0224,
346 .p0_mpdgctrl1 = 0x02000220,
347 .p0_mprddlctl = 0x44444846,
348 .p0_mpwrdlctl = 0x32343032,
349 };
350
351 /* microSOM with Dual lite processor and 1GB memory */
352 static const struct mx6_mmdc_calibration mx6dl_1g_mmcd_calib = {
353 .p0_mpwldectrl0 = 0x0045004D,
354 .p0_mpwldectrl1 = 0x003A0047,
355 .p1_mpwldectrl0 = 0x001F001F,
356 .p1_mpwldectrl1 = 0x00210035,
357 .p0_mpdgctrl0 = 0x023C0224,
358 .p0_mpdgctrl1 = 0x02000220,
359 .p1_mpdgctrl0 = 0x02200220,
360 .p1_mpdgctrl1 = 0x02000220,
361 .p0_mprddlctl = 0x44444846,
362 .p1_mprddlctl = 0x4042463C,
363 .p0_mpwrdlctl = 0x32343032,
364 .p1_mpwrdlctl = 0x36363430,
365 };
366
367 static struct mx6_ddr3_cfg mem_ddr_2g = {
368 .mem_speed = 1600,
369 .density = 2,
370 .width = 16,
371 .banks = 8,
372 .rowaddr = 14,
373 .coladdr = 10,
374 .pagesz = 2,
375 .trcd = 1375,
376 .trcmin = 4875,
377 .trasmin = 3500,
378 .SRT = 1,
379 };
380
381 static struct mx6_ddr3_cfg mem_ddr_4g = {
382 .mem_speed = 1600,
383 .density = 4,
384 .width = 16,
385 .banks = 8,
386 .rowaddr = 15,
387 .coladdr = 10,
388 .pagesz = 2,
389 .trcd = 1375,
390 .trcmin = 4875,
391 .trasmin = 3500,
392 };
393
394 static void ccgr_init(void)
395 {
396 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
397
398 writel(0x00C03F3F, &ccm->CCGR0);
399 writel(0x0030FC03, &ccm->CCGR1);
400 writel(0x0FFFC000, &ccm->CCGR2);
401 writel(0x3FF00000, &ccm->CCGR3);
402 writel(0x00FFF300, &ccm->CCGR4);
403 writel(0x0F0000C3, &ccm->CCGR5);
404 writel(0x000003FF, &ccm->CCGR6);
405 }
406
407 static void gpr_init(void)
408 {
409 struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
410
411 /* enable AXI cache for VDOA/VPU/IPU */
412 writel(0xF00000CF, &iomux->gpr[4]);
413 /* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
414 writel(0x007F007F, &iomux->gpr[6]);
415 writel(0x007F007F, &iomux->gpr[7]);
416 }
417
418 /*
419 * This section requires the differentiation between Solidrun mx6 boards, but
420 * for now, it will configure only for the mx6dual hummingboard version.
421 */
422 static void spl_dram_init(int width)
423 {
424 struct mx6_ddr_sysinfo sysinfo = {
425 /* width of data bus: 0=16, 1=32, 2=64 */
426 .dsize = width / 32,
427 /* config for full 4GB range so that get_mem_size() works */
428 .cs_density = 32, /* 32Gb per CS */
429 .ncs = 1, /* single chip select */
430 .cs1_mirror = 0,
431 .rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */
432 .rtt_nom = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */
433 .walat = 1, /* Write additional latency */
434 .ralat = 5, /* Read additional latency */
435 .mif3_mode = 3, /* Command prediction working mode */
436 .bi_on = 1, /* Bank interleaving enabled */
437 .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
438 .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
439 };
440
441 if (is_cpu_type(MXC_CPU_MX6D) || is_cpu_type(MXC_CPU_MX6Q))
442 mx6dq_dram_iocfg(width, &mx6q_ddr_ioregs, &mx6q_grp_ioregs);
443 else
444 mx6sdl_dram_iocfg(width, &mx6dl_ddr_ioregs, &mx6sdl_grp_ioregs);
445
446 if (is_cpu_type(MXC_CPU_MX6D))
447 mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g);
448 else if (is_cpu_type(MXC_CPU_MX6Q))
449 mx6_dram_cfg(&sysinfo, &mx6q_2g_mmcd_calib, &mem_ddr_4g);
450 else if (is_cpu_type(MXC_CPU_MX6DL))
451 mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g);
452 else if (is_cpu_type(MXC_CPU_MX6SOLO))
453 mx6_dram_cfg(&sysinfo, &mx6dl_512m_mmcd_calib, &mem_ddr_2g);
454 }
455
456 void board_init_f(ulong dummy)
457 {
458 /* setup AIPS and disable watchdog */
459 arch_cpu_init();
460
461 ccgr_init();
462 gpr_init();
463
464 /* iomux and setup of i2c */
465 board_early_init_f();
466
467 /* setup GP timer */
468 timer_init();
469
470 /* UART clocks enabled and gd valid - init serial console */
471 preloader_console_init();
472
473 /* DDR initialization */
474 if (is_cpu_type(MXC_CPU_MX6SOLO))
475 spl_dram_init(32);
476 else
477 spl_dram_init(64);
478
479 /* Clear the BSS. */
480 memset(__bss_start, 0, __bss_end - __bss_start);
481
482 /* load/boot image from boot device */
483 board_init_r(NULL, 0);
484 }
485 #endif