diff options
Diffstat (limited to 'arch/arm/mach-at91/include/mach/atmel_mpddrc.h')
| -rw-r--r-- | arch/arm/mach-at91/include/mach/atmel_mpddrc.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/include/mach/atmel_mpddrc.h b/arch/arm/mach-at91/include/mach/atmel_mpddrc.h new file mode 100644 index 0000000000..130a85abee --- /dev/null +++ b/arch/arm/mach-at91/include/mach/atmel_mpddrc.h @@ -0,0 +1,116 @@ +/* + * Copyright (C) 2013 Atmel Corporation + * Bo Shen <voice.shen@atmel.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ATMEL_MPDDRC_H__ +#define __ATMEL_MPDDRC_H__ + +/* + * Only define the needed register in mpddr + * If other register needed, will add them later + */ +struct atmel_mpddr { + u32 mr; + u32 rtr; + u32 cr; + u32 tpr0; + u32 tpr1; + u32 tpr2; + u32 reserved[2]; + u32 md; +}; + +int ddr2_init(const unsigned int ram_address, + const struct atmel_mpddr *mpddr); + +/* Bit field in mode register */ +#define ATMEL_MPDDRC_MR_MODE_NORMAL_CMD 0x0 +#define ATMEL_MPDDRC_MR_MODE_NOP_CMD 0x1 +#define ATMEL_MPDDRC_MR_MODE_PRCGALL_CMD 0x2 +#define ATMEL_MPDDRC_MR_MODE_LMR_CMD 0x3 +#define ATMEL_MPDDRC_MR_MODE_RFSH_CMD 0x4 +#define ATMEL_MPDDRC_MR_MODE_EXT_LMR_CMD 0x5 +#define ATMEL_MPDDRC_MR_MODE_DEEP_CMD 0x6 +#define ATMEL_MPDDRC_MR_MODE_LPDDR2_CMD 0x7 + +/* Bit field in configuration register */ +#define ATMEL_MPDDRC_CR_NC_MASK 0x3 +#define ATMEL_MPDDRC_CR_NC_COL_9 0x0 +#define ATMEL_MPDDRC_CR_NC_COL_10 0x1 +#define ATMEL_MPDDRC_CR_NC_COL_11 0x2 +#define ATMEL_MPDDRC_CR_NC_COL_12 0x3 +#define ATMEL_MPDDRC_CR_NR_MASK (0x3 << 2) +#define ATMEL_MPDDRC_CR_NR_ROW_11 (0x0 << 2) +#define ATMEL_MPDDRC_CR_NR_ROW_12 (0x1 << 2) +#define ATMEL_MPDDRC_CR_NR_ROW_13 (0x2 << 2) +#define ATMEL_MPDDRC_CR_NR_ROW_14 (0x3 << 2) +#define ATMEL_MPDDRC_CR_CAS_MASK (0x7 << 4) +#define ATMEL_MPDDRC_CR_CAS_DDR_CAS2 (0x2 << 4) +#define ATMEL_MPDDRC_CR_CAS_DDR_CAS3 (0x3 << 4) +#define ATMEL_MPDDRC_CR_CAS_DDR_CAS4 (0x4 << 4) +#define ATMEL_MPDDRC_CR_CAS_DDR_CAS5 (0x5 << 4) +#define ATMEL_MPDDRC_CR_CAS_DDR_CAS6 (0x6 << 4) +#define ATMEL_MPDDRC_CR_DLL_RESET_ENABLED (0x1 << 7) +#define ATMEL_MPDDRC_CR_DIC_DS (0x1 << 8) +#define ATMEL_MPDDRC_CR_DIS_DLL (0x1 << 9) +#define ATMEL_MPDDRC_CR_OCD_DEFAULT (0x7 << 12) +#define ATMEL_MPDDRC_CR_DQMS_SHARED (0x1 << 16) +#define ATMEL_MPDDRC_CR_ENRDM_ON (0x1 << 17) +#define ATMEL_MPDDRC_CR_NB_8BANKS (0x1 << 20) +#define ATMEL_MPDDRC_CR_NDQS_DISABLED (0x1 << 21) +#define ATMEL_MPDDRC_CR_DECOD_INTERLEAVED (0x1 << 22) +#define ATMEL_MPDDRC_CR_UNAL_SUPPORTED (0x1 << 23) + +/* Bit field in timing parameter 0 register */ +#define ATMEL_MPDDRC_TPR0_TRAS_OFFSET 0 +#define ATMEL_MPDDRC_TPR0_TRAS_MASK 0xf +#define ATMEL_MPDDRC_TPR0_TRCD_OFFSET 4 +#define ATMEL_MPDDRC_TPR0_TRCD_MASK 0xf +#define ATMEL_MPDDRC_TPR0_TWR_OFFSET 8 +#define ATMEL_MPDDRC_TPR0_TWR_MASK 0xf +#define ATMEL_MPDDRC_TPR0_TRC_OFFSET 12 +#define ATMEL_MPDDRC_TPR0_TRC_MASK 0xf +#define ATMEL_MPDDRC_TPR0_TRP_OFFSET 16 +#define ATMEL_MPDDRC_TPR0_TRP_MASK 0xf +#define ATMEL_MPDDRC_TPR0_TRRD_OFFSET 20 +#define ATMEL_MPDDRC_TPR0_TRRD_MASK 0xf +#define ATMEL_MPDDRC_TPR0_TWTR_OFFSET 24 +#define ATMEL_MPDDRC_TPR0_TWTR_MASK 0x7 +#define ATMEL_MPDDRC_TPR0_RDC_WRRD_OFFSET 27 +#define ATMEL_MPDDRC_TPR0_RDC_WRRD_MASK 0x1 +#define ATMEL_MPDDRC_TPR0_TMRD_OFFSET 28 +#define ATMEL_MPDDRC_TPR0_TMRD_MASK 0xf + +/* Bit field in timing parameter 1 register */ +#define ATMEL_MPDDRC_TPR1_TRFC_OFFSET 0 +#define ATMEL_MPDDRC_TPR1_TRFC_MASK 0x7f +#define ATMEL_MPDDRC_TPR1_TXSNR_OFFSET 8 +#define ATMEL_MPDDRC_TPR1_TXSNR_MASK 0xff +#define ATMEL_MPDDRC_TPR1_TXSRD_OFFSET 16 +#define ATMEL_MPDDRC_TPR1_TXSRD_MASK 0xff +#define ATMEL_MPDDRC_TPR1_TXP_OFFSET 24 +#define ATMEL_MPDDRC_TPR1_TXP_MASK 0xf + +/* Bit field in timing parameter 2 register */ +#define ATMEL_MPDDRC_TPR2_TXARD_OFFSET 0 +#define ATMEL_MPDDRC_TPR2_TXARD_MASK 0xf +#define ATMEL_MPDDRC_TPR2_TXARDS_OFFSET 4 +#define ATMEL_MPDDRC_TPR2_TXARDS_MASK 0xf +#define ATMEL_MPDDRC_TPR2_TRPA_OFFSET 8 +#define ATMEL_MPDDRC_TPR2_TRPA_MASK 0xf +#define ATMEL_MPDDRC_TPR2_TRTP_OFFSET 12 +#define ATMEL_MPDDRC_TPR2_TRTP_MASK 0x7 +#define ATMEL_MPDDRC_TPR2_TFAW_OFFSET 16 +#define ATMEL_MPDDRC_TPR2_TFAW_MASK 0xf + +/* Bit field in Memory Device Register */ +#define ATMEL_MPDDRC_MD_LPDDR_SDRAM 0x3 +#define ATMEL_MPDDRC_MD_DDR2_SDRAM 0x6 +#define ATMEL_MPDDRC_MD_DBW_MASK (0x1 << 4) +#define ATMEL_MPDDRC_MD_DBW_32_BITS (0x0 << 4) +#define ATMEL_MPDDRC_MD_DBW_16_BITS (0x1 << 4) + +#endif |