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/*
* 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_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
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