2 * (C) Copyright 2015, Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
8 #include <asm/arch/imx-regs.h>
9 #include <asm/arch/siul.h>
10 #include <asm/arch/lpddr2.h>
11 #include <asm/arch/mmdc.h>
13 volatile int mscr_offset_ck0;
15 void lpddr2_config_iomux(uint8_t module)
21 mscr_offset_ck0 = SIUL2_MSCRn(_DDR0_CKE0);
22 writel(LPDDR2_CLK0_PAD, SIUL2_MSCRn(_DDR0_CLK0));
24 writel(LPDDR2_CKEn_PAD, SIUL2_MSCRn(_DDR0_CKE0));
25 writel(LPDDR2_CKEn_PAD, SIUL2_MSCRn(_DDR0_CKE1));
27 writel(LPDDR2_CS_Bn_PAD, SIUL2_MSCRn(_DDR0_CS_B0));
28 writel(LPDDR2_CS_Bn_PAD, SIUL2_MSCRn(_DDR0_CS_B1));
30 for (i = _DDR0_DM0; i <= _DDR0_DM3; i++)
31 writel(LPDDR2_DMn_PAD, SIUL2_MSCRn(i));
33 for (i = _DDR0_DQS0; i <= _DDR0_DQS3; i++)
34 writel(LPDDR2_DQSn_PAD, SIUL2_MSCRn(i));
36 for (i = _DDR0_A0; i <= _DDR0_A9; i++)
37 writel(LPDDR2_An_PAD, SIUL2_MSCRn(i));
39 for (i = _DDR0_D0; i <= _DDR0_D31; i++)
40 writel(LPDDR2_Dn_PAD, SIUL2_MSCRn(i));
43 writel(LPDDR2_CLK0_PAD, SIUL2_MSCRn(_DDR1_CLK0));
45 writel(LPDDR2_CKEn_PAD, SIUL2_MSCRn(_DDR1_CKE0));
46 writel(LPDDR2_CKEn_PAD, SIUL2_MSCRn(_DDR1_CKE1));
48 writel(LPDDR2_CS_Bn_PAD, SIUL2_MSCRn(_DDR1_CS_B0));
49 writel(LPDDR2_CS_Bn_PAD, SIUL2_MSCRn(_DDR1_CS_B1));
51 for (i = _DDR1_DM0; i <= _DDR1_DM3; i++)
52 writel(LPDDR2_DMn_PAD, SIUL2_MSCRn(i));
54 for (i = _DDR1_DQS0; i <= _DDR1_DQS3; i++)
55 writel(LPDDR2_DQSn_PAD, SIUL2_MSCRn(i));
57 for (i = _DDR1_A0; i <= _DDR1_A9; i++)
58 writel(LPDDR2_An_PAD, SIUL2_MSCRn(i));
60 for (i = _DDR1_D0; i <= _DDR1_D31; i++)
61 writel(LPDDR2_Dn_PAD, SIUL2_MSCRn(i));
66 void config_mmdc(uint8_t module)
68 unsigned long mmdc_addr = (module) ? MMDC1_BASE_ADDR : MMDC0_BASE_ADDR;
70 writel(MMDC_MDSCR_CFG_VALUE, mmdc_addr + MMDC_MDSCR);
72 writel(MMDC_MDCFG0_VALUE, mmdc_addr + MMDC_MDCFG0);
73 writel(MMDC_MDCFG1_VALUE, mmdc_addr + MMDC_MDCFG1);
74 writel(MMDC_MDCFG2_VALUE, mmdc_addr + MMDC_MDCFG2);
75 writel(MMDC_MDCFG3LP_VALUE, mmdc_addr + MMDC_MDCFG3LP);
76 writel(MMDC_MDOTC_VALUE, mmdc_addr + MMDC_MDOTC);
77 writel(MMDC_MDMISC_VALUE, mmdc_addr + MMDC_MDMISC);
78 writel(MMDC_MDOR_VALUE, mmdc_addr + MMDC_MDOR);
79 writel(_MDCTL, mmdc_addr + MMDC_MDCTL);
81 writel(MMDC_MPMUR0_VALUE, mmdc_addr + MMDC_MPMUR0);
83 while (readl(mmdc_addr + MMDC_MPMUR0) & MMDC_MPMUR0_FRC_MSR) {
86 writel(MMDC_MDSCR_RST_VALUE, mmdc_addr + MMDC_MDSCR);
88 /* Perform ZQ calibration */
89 writel(MMDC_MPZQLP2CTL_VALUE, mmdc_addr + MMDC_MPZQLP2CTL);
90 writel(MMDC_MPZQHWCTRL_VALUE, mmdc_addr + MMDC_MPZQHWCTRL);
91 while (readl(mmdc_addr + MMDC_MPZQHWCTRL) & MMDC_MPZQHWCTRL_ZQ_HW_FOR) {
94 /* Enable MMDC with CS0 */
95 writel(_MDCTL + 0x80000000, mmdc_addr + MMDC_MDCTL);
97 /* Complete the initialization sequence as defined by JEDEC */
98 writel(MMDC_MDSCR_MR1_VALUE, mmdc_addr + MMDC_MDSCR);
99 writel(MMDC_MDSCR_MR2_VALUE, mmdc_addr + MMDC_MDSCR);
100 writel(MMDC_MDSCR_MR3_VALUE, mmdc_addr + MMDC_MDSCR);
101 writel(MMDC_MDSCR_MR10_VALUE, mmdc_addr + MMDC_MDSCR);
103 /* Set the amount of DRAM */
104 /* Set DQS settings based on board type */
108 writel(MMDC_MDASP_MODULE0_VALUE, mmdc_addr + MMDC_MDASP);
109 writel(MMDC_MPRDDLCTL_MODULE0_VALUE,
110 mmdc_addr + MMDC_MPRDDLCTL);
111 writel(MMDC_MPWRDLCTL_MODULE0_VALUE,
112 mmdc_addr + MMDC_MPWRDLCTL);
113 writel(MMDC_MPDGCTRL0_MODULE0_VALUE,
114 mmdc_addr + MMDC_MPDGCTRL0);
115 writel(MMDC_MPDGCTRL1_MODULE0_VALUE,
116 mmdc_addr + MMDC_MPDGCTRL1);
119 writel(MMDC_MDASP_MODULE1_VALUE, mmdc_addr + MMDC_MDASP);
120 writel(MMDC_MPRDDLCTL_MODULE1_VALUE,
121 mmdc_addr + MMDC_MPRDDLCTL);
122 writel(MMDC_MPWRDLCTL_MODULE1_VALUE,
123 mmdc_addr + MMDC_MPWRDLCTL);
124 writel(MMDC_MPDGCTRL0_MODULE1_VALUE,
125 mmdc_addr + MMDC_MPDGCTRL0);
126 writel(MMDC_MPDGCTRL1_MODULE1_VALUE,
127 mmdc_addr + MMDC_MPDGCTRL1);
131 writel(MMDC_MDRWD_VALUE, mmdc_addr + MMDC_MDRWD);
132 writel(MMDC_MDPDC_VALUE, mmdc_addr + MMDC_MDPDC);
133 writel(MMDC_MDREF_VALUE, mmdc_addr + MMDC_MDREF);
134 writel(MMDC_MPODTCTRL_VALUE, mmdc_addr + MMDC_MPODTCTRL);
135 writel(MMDC_MDSCR_DEASSERT_VALUE, mmdc_addr + MMDC_MDSCR);