diff options
Diffstat (limited to 'board/freescale/s32v234evb/lpddr2.c')
| -rw-r--r-- | board/freescale/s32v234evb/lpddr2.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/board/freescale/s32v234evb/lpddr2.c b/board/freescale/s32v234evb/lpddr2.c new file mode 100644 index 0000000000..ecc0842bf0 --- /dev/null +++ b/board/freescale/s32v234evb/lpddr2.c @@ -0,0 +1,137 @@ +/* + * (C) Copyright 2015, Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <asm/io.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/siul.h> +#include <asm/arch/lpddr2.h> +#include <asm/arch/mmdc.h> + +volatile int mscr_offset_ck0; + +void lpddr2_config_iomux(uint8_t module) +{ + int i; + + switch (module) { + case DDR0: + mscr_offset_ck0 = SIUL2_MSCRn(_DDR0_CKE0); + writel(LPDDR2_CLK0_PAD, SIUL2_MSCRn(_DDR0_CLK0)); + + writel(LPDDR2_CKEn_PAD, SIUL2_MSCRn(_DDR0_CKE0)); + writel(LPDDR2_CKEn_PAD, SIUL2_MSCRn(_DDR0_CKE1)); + + writel(LPDDR2_CS_Bn_PAD, SIUL2_MSCRn(_DDR0_CS_B0)); + writel(LPDDR2_CS_Bn_PAD, SIUL2_MSCRn(_DDR0_CS_B1)); + + for (i = _DDR0_DM0; i <= _DDR0_DM3; i++) + writel(LPDDR2_DMn_PAD, SIUL2_MSCRn(i)); + + for (i = _DDR0_DQS0; i <= _DDR0_DQS3; i++) + writel(LPDDR2_DQSn_PAD, SIUL2_MSCRn(i)); + + for (i = _DDR0_A0; i <= _DDR0_A9; i++) + writel(LPDDR2_An_PAD, SIUL2_MSCRn(i)); + + for (i = _DDR0_D0; i <= _DDR0_D31; i++) + writel(LPDDR2_Dn_PAD, SIUL2_MSCRn(i)); + break; + case DDR1: + writel(LPDDR2_CLK0_PAD, SIUL2_MSCRn(_DDR1_CLK0)); + + writel(LPDDR2_CKEn_PAD, SIUL2_MSCRn(_DDR1_CKE0)); + writel(LPDDR2_CKEn_PAD, SIUL2_MSCRn(_DDR1_CKE1)); + + writel(LPDDR2_CS_Bn_PAD, SIUL2_MSCRn(_DDR1_CS_B0)); + writel(LPDDR2_CS_Bn_PAD, SIUL2_MSCRn(_DDR1_CS_B1)); + + for (i = _DDR1_DM0; i <= _DDR1_DM3; i++) + writel(LPDDR2_DMn_PAD, SIUL2_MSCRn(i)); + + for (i = _DDR1_DQS0; i <= _DDR1_DQS3; i++) + writel(LPDDR2_DQSn_PAD, SIUL2_MSCRn(i)); + + for (i = _DDR1_A0; i <= _DDR1_A9; i++) + writel(LPDDR2_An_PAD, SIUL2_MSCRn(i)); + + for (i = _DDR1_D0; i <= _DDR1_D31; i++) + writel(LPDDR2_Dn_PAD, SIUL2_MSCRn(i)); + break; + } +} + +void config_mmdc(uint8_t module) +{ + unsigned long mmdc_addr = (module) ? MMDC1_BASE_ADDR : MMDC0_BASE_ADDR; + + writel(MMDC_MDSCR_CFG_VALUE, mmdc_addr + MMDC_MDSCR); + + writel(MMDC_MDCFG0_VALUE, mmdc_addr + MMDC_MDCFG0); + writel(MMDC_MDCFG1_VALUE, mmdc_addr + MMDC_MDCFG1); + writel(MMDC_MDCFG2_VALUE, mmdc_addr + MMDC_MDCFG2); + writel(MMDC_MDCFG3LP_VALUE, mmdc_addr + MMDC_MDCFG3LP); + writel(MMDC_MDOTC_VALUE, mmdc_addr + MMDC_MDOTC); + writel(MMDC_MDMISC_VALUE, mmdc_addr + MMDC_MDMISC); + writel(MMDC_MDOR_VALUE, mmdc_addr + MMDC_MDOR); + writel(_MDCTL, mmdc_addr + MMDC_MDCTL); + + writel(MMDC_MPMUR0_VALUE, mmdc_addr + MMDC_MPMUR0); + + while (readl(mmdc_addr + MMDC_MPMUR0) & MMDC_MPMUR0_FRC_MSR) { + } + + writel(MMDC_MDSCR_RST_VALUE, mmdc_addr + MMDC_MDSCR); + + /* Perform ZQ calibration */ + writel(MMDC_MPZQLP2CTL_VALUE, mmdc_addr + MMDC_MPZQLP2CTL); + writel(MMDC_MPZQHWCTRL_VALUE, mmdc_addr + MMDC_MPZQHWCTRL); + while (readl(mmdc_addr + MMDC_MPZQHWCTRL) & MMDC_MPZQHWCTRL_ZQ_HW_FOR) { + } + + /* Enable MMDC with CS0 */ + writel(_MDCTL + 0x80000000, mmdc_addr + MMDC_MDCTL); + + /* Complete the initialization sequence as defined by JEDEC */ + writel(MMDC_MDSCR_MR1_VALUE, mmdc_addr + MMDC_MDSCR); + writel(MMDC_MDSCR_MR2_VALUE, mmdc_addr + MMDC_MDSCR); + writel(MMDC_MDSCR_MR3_VALUE, mmdc_addr + MMDC_MDSCR); + writel(MMDC_MDSCR_MR10_VALUE, mmdc_addr + MMDC_MDSCR); + + /* Set the amount of DRAM */ + /* Set DQS settings based on board type */ + + switch (module) { + case MMDC0: + writel(MMDC_MDASP_MODULE0_VALUE, mmdc_addr + MMDC_MDASP); + writel(MMDC_MPRDDLCTL_MODULE0_VALUE, + mmdc_addr + MMDC_MPRDDLCTL); + writel(MMDC_MPWRDLCTL_MODULE0_VALUE, + mmdc_addr + MMDC_MPWRDLCTL); + writel(MMDC_MPDGCTRL0_MODULE0_VALUE, + mmdc_addr + MMDC_MPDGCTRL0); + writel(MMDC_MPDGCTRL1_MODULE0_VALUE, + mmdc_addr + MMDC_MPDGCTRL1); + break; + case MMDC1: + writel(MMDC_MDASP_MODULE1_VALUE, mmdc_addr + MMDC_MDASP); + writel(MMDC_MPRDDLCTL_MODULE1_VALUE, + mmdc_addr + MMDC_MPRDDLCTL); + writel(MMDC_MPWRDLCTL_MODULE1_VALUE, + mmdc_addr + MMDC_MPWRDLCTL); + writel(MMDC_MPDGCTRL0_MODULE1_VALUE, + mmdc_addr + MMDC_MPDGCTRL0); + writel(MMDC_MPDGCTRL1_MODULE1_VALUE, + mmdc_addr + MMDC_MPDGCTRL1); + break; + } + + writel(MMDC_MDRWD_VALUE, mmdc_addr + MMDC_MDRWD); + writel(MMDC_MDPDC_VALUE, mmdc_addr + MMDC_MDPDC); + writel(MMDC_MDREF_VALUE, mmdc_addr + MMDC_MDREF); + writel(MMDC_MPODTCTRL_VALUE, mmdc_addr + MMDC_MPODTCTRL); + writel(MMDC_MDSCR_DEASSERT_VALUE, mmdc_addr + MMDC_MDSCR); + +} |