2 * Copyright (C) 2016 Amarula Solutions B.V.
3 * Copyright (C) 2016 Engicam S.r.l.
4 * Author: Jagan Teki <jagan@amarulasolutions.com>
6 * SPDX-License-Identifier: GPL-2.0+
14 #include <linux/sizes.h>
16 #include <asm/arch/clock.h>
17 #include <asm/arch/crm_regs.h>
18 #include <asm/arch/iomux.h>
19 #include <asm/arch/mx6-pins.h>
20 #include <asm/arch/sys_proto.h>
21 #include <asm/imx-common/iomux-v3.h>
23 DECLARE_GLOBAL_DATA_PTR;
25 #ifdef CONFIG_NAND_MXS
27 #define GPMI_PAD_CTRL0 (PAD_CTL_PKE | PAD_CTL_PUE | PAD_CTL_PUS_100K_UP)
28 #define GPMI_PAD_CTRL1 (PAD_CTL_DSE_40ohm | PAD_CTL_SPEED_MED | \
30 #define GPMI_PAD_CTRL2 (GPMI_PAD_CTRL0 | GPMI_PAD_CTRL1)
32 static iomux_v3_cfg_t const nand_pads[] = {
33 IOMUX_PADS(PAD_NAND_DATA00__RAWNAND_DATA00 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
34 IOMUX_PADS(PAD_NAND_DATA01__RAWNAND_DATA01 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
35 IOMUX_PADS(PAD_NAND_DATA02__RAWNAND_DATA02 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
36 IOMUX_PADS(PAD_NAND_DATA03__RAWNAND_DATA03 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
37 IOMUX_PADS(PAD_NAND_DATA04__RAWNAND_DATA04 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
38 IOMUX_PADS(PAD_NAND_DATA05__RAWNAND_DATA05 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
39 IOMUX_PADS(PAD_NAND_DATA06__RAWNAND_DATA06 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
40 IOMUX_PADS(PAD_NAND_DATA07__RAWNAND_DATA07 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
41 IOMUX_PADS(PAD_NAND_CLE__RAWNAND_CLE | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
42 IOMUX_PADS(PAD_NAND_ALE__RAWNAND_ALE | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
43 IOMUX_PADS(PAD_NAND_CE0_B__RAWNAND_CE0_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
44 IOMUX_PADS(PAD_NAND_RE_B__RAWNAND_RE_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
45 IOMUX_PADS(PAD_NAND_WE_B__RAWNAND_WE_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
46 IOMUX_PADS(PAD_NAND_WP_B__RAWNAND_WP_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
47 IOMUX_PADS(PAD_NAND_READY_B__RAWNAND_READY_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
50 static void setup_gpmi_nand(void)
52 struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
54 /* config gpmi nand iomux */
55 SETUP_IOMUX_PADS(nand_pads);
57 clrbits_le32(&mxc_ccm->CCGR4,
58 MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
59 MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
60 MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
61 MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
62 MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK);
65 * config gpmi and bch clock to 100 MHz
66 * bch/gpmi select PLL2 PFD2 400M
69 clrbits_le32(&mxc_ccm->cscmr1,
70 MXC_CCM_CSCMR1_BCH_CLK_SEL |
71 MXC_CCM_CSCMR1_GPMI_CLK_SEL);
72 clrsetbits_le32(&mxc_ccm->cscdr1,
73 MXC_CCM_CSCDR1_BCH_PODF_MASK |
74 MXC_CCM_CSCDR1_GPMI_PODF_MASK,
75 (3 << MXC_CCM_CSCDR1_BCH_PODF_OFFSET) |
76 (3 << MXC_CCM_CSCDR1_GPMI_PODF_OFFSET));
78 /* enable gpmi and bch clock gating */
79 setbits_le32(&mxc_ccm->CCGR4,
80 MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
81 MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
82 MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
83 MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
84 MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK);
86 /* enable apbh clock gating */
87 setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK);
89 #endif /* CONFIG_NAND_MXS */
91 #ifdef CONFIG_ENV_IS_IN_MMC
92 static void mmc_late_init(void)
96 u32 dev_no = mmc_get_env_dev();
98 setenv_ulong("mmcdev", dev_no);
101 sprintf(mmcblk, "/dev/mmcblk%dp2 rootwait rw", dev_no);
102 setenv("mmcroot", mmcblk);
104 sprintf(cmd, "mmc dev %d", dev_no);
109 int board_late_init(void)
111 switch ((imx6_src_get_boot_mode() & IMX6_BMODE_MASK) >>
115 #ifdef CONFIG_ENV_IS_IN_MMC
118 setenv("modeboot", "mmcboot");
120 case IMX6_BMODE_NAND:
121 setenv("modeboot", "nandboot");
124 setenv("modeboot", "");
129 setenv("fdt_file", "imx6ul-geam-kit.dtb");
136 /* Address of boot parameters */
137 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
139 #ifdef CONFIG_NAND_MXS
148 gd->ram_size = imx_ddr_size();
153 #ifdef CONFIG_SPL_BUILD
157 #include <asm/arch/crm_regs.h>
158 #include <asm/arch/mx6-ddr.h>
160 #define UART_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
161 PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
162 PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
164 static iomux_v3_cfg_t const uart1_pads[] = {
165 IOMUX_PADS(PAD_UART1_TX_DATA__UART1_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL)),
166 IOMUX_PADS(PAD_UART1_RX_DATA__UART1_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL)),
169 /* MMC board initialization is needed till adding DM support in SPL */
170 #if defined(CONFIG_FSL_ESDHC) && !defined(CONFIG_DM_MMC)
172 #include <fsl_esdhc.h>
174 #define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
175 PAD_CTL_PUS_22K_UP | PAD_CTL_SPEED_LOW | \
176 PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
178 static iomux_v3_cfg_t const usdhc1_pads[] = {
179 IOMUX_PADS(PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
180 IOMUX_PADS(PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
181 IOMUX_PADS(PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
182 IOMUX_PADS(PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
183 IOMUX_PADS(PAD_SD1_DATA2__USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
184 IOMUX_PADS(PAD_SD1_DATA3__USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
187 IOMUX_PADS(PAD_GPIO1_IO05__USDHC1_VSELECT | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
189 IOMUX_PADS(PAD_UART1_RTS_B__GPIO1_IO19 | MUX_PAD_CTRL(NO_PAD_CTRL)),
191 IOMUX_PADS(PAD_GPIO1_IO09__GPIO1_IO09 | MUX_PAD_CTRL(NO_PAD_CTRL)),
194 #define USDHC1_CD_GPIO IMX_GPIO_NR(1, 1)
196 struct fsl_esdhc_cfg usdhc_cfg[1] = {
197 {USDHC1_BASE_ADDR, 0, 4},
200 int board_mmc_getcd(struct mmc *mmc)
202 struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
205 switch (cfg->esdhc_base) {
206 case USDHC1_BASE_ADDR:
207 ret = !gpio_get_value(USDHC1_CD_GPIO);
214 int board_mmc_init(bd_t *bis)
219 * According to the board_mmc_init() the following map is done:
220 * (U-boot device node) (Physical Port)
223 for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
226 SETUP_IOMUX_PADS(usdhc1_pads);
227 gpio_direction_input(USDHC1_CD_GPIO);
228 usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
231 printf("Warning - USDHC%d controller not supporting\n",
236 ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
238 printf("Warning: failed to initialize mmc dev %d\n", i);
245 #endif /* CONFIG_FSL_ESDHC */
247 static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = {
248 .grp_addds = 0x00000030,
249 .grp_ddrmode_ctl = 0x00020000,
250 .grp_b0ds = 0x00000030,
251 .grp_ctlds = 0x00000030,
252 .grp_b1ds = 0x00000030,
253 .grp_ddrpke = 0x00000000,
254 .grp_ddrmode = 0x00020000,
255 .grp_ddr_type = 0x000c0000,
258 static struct mx6ul_iomux_ddr_regs mx6_ddr_ioregs = {
259 .dram_dqm0 = 0x00000030,
260 .dram_dqm1 = 0x00000030,
261 .dram_ras = 0x00000030,
262 .dram_cas = 0x00000030,
263 .dram_odt0 = 0x00000030,
264 .dram_odt1 = 0x00000030,
265 .dram_sdba2 = 0x00000000,
266 .dram_sdclk_0 = 0x00000008,
267 .dram_sdqs0 = 0x00000038,
268 .dram_sdqs1 = 0x00000030,
269 .dram_reset = 0x00000030,
272 static struct mx6_mmdc_calibration mx6_mmcd_calib = {
273 .p0_mpwldectrl0 = 0x00070007,
274 .p0_mpdgctrl0 = 0x41490145,
275 .p0_mprddlctl = 0x40404546,
276 .p0_mpwrdlctl = 0x4040524D,
279 struct mx6_ddr_sysinfo ddr_sysinfo = {
285 .rtt_nom = 1, /* RTT_Nom = RZQ/2 */
286 .walat = 1, /* Write additional latency */
287 .ralat = 5, /* Read additional latency */
288 .mif3_mode = 3, /* Command prediction working mode */
289 .bi_on = 1, /* Bank interleaving enabled */
290 .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
291 .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
292 .ddr_type = DDR_TYPE_DDR3,
295 static struct mx6_ddr3_cfg mem_ddr = {
308 static void ccgr_init(void)
310 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
312 writel(0xFFFFFFFF, &ccm->CCGR0);
313 writel(0xFFFFFFFF, &ccm->CCGR1);
314 writel(0xFFFFFFFF, &ccm->CCGR2);
315 writel(0xFFFFFFFF, &ccm->CCGR3);
316 writel(0xFFFFFFFF, &ccm->CCGR4);
317 writel(0xFFFFFFFF, &ccm->CCGR5);
318 writel(0xFFFFFFFF, &ccm->CCGR6);
319 writel(0xFFFFFFFF, &ccm->CCGR7);
322 static void spl_dram_init(void)
324 mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
325 mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr);
328 void board_init_f(ulong dummy)
330 /* setup AIPS and disable watchdog */
335 /* iomux and setup of i2c */
336 SETUP_IOMUX_PADS(uart1_pads);
341 /* UART clocks enabled and gd valid - init serial console */
342 preloader_console_init();
344 /* DDR initialization */
348 memset(__bss_start, 0, __bss_end - __bss_start);
350 /* load/boot image from boot device */
351 board_init_r(NULL, 0);
353 #endif /* CONFIG_SPL_BUILD */