32 lines
895 B
C
32 lines
895 B
C
|
/* SPDX-License-Identifier: GPL-2.0+ */
|
||
|
|
/*
|
||
|
|
* (c) 2015 Purna Chandra Mandal <purna.mandal@microchip.com>
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __MICROCHIP_PIC32_DDR_H
|
||
|
|
#define __MICROCHIP_PIC32_DDR_H
|
||
|
|
|
||
|
|
/* called by dram_init() function */
|
||
|
|
void ddr2_phy_init(void);
|
||
|
|
void ddr2_ctrl_init(void);
|
||
|
|
phys_size_t ddr2_calculate_size(void);
|
||
|
|
|
||
|
|
/* Maximum number of agents */
|
||
|
|
#define NUM_AGENTS 5
|
||
|
|
|
||
|
|
/* Board can provide agent specific parameters for arbitration by
|
||
|
|
* filling struct ddr2_arbiter_params for all the agents and
|
||
|
|
* implementing board_get_ddr_arbiter_params() to return the filled
|
||
|
|
* structure.
|
||
|
|
*/
|
||
|
|
struct ddr2_arbiter_params {
|
||
|
|
u32 min_limit; /* min bursts to execute per arbitration */
|
||
|
|
u32 req_period; /* request period threshold for accepted cmds */
|
||
|
|
u32 min_cmd_acpt; /* min number of accepted cmds */
|
||
|
|
};
|
||
|
|
|
||
|
|
const struct ddr2_arbiter_params *board_get_ddr_arbiter_params(void);
|
||
|
|
|
||
|
|
#endif /* __MICROCHIP_PIC32_DDR_H */
|