1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * (c) 2015 Purna Chandra Mandal <purna.mandal@microchip.com>
4  *
5  */
6 
7 #ifndef __MICROCHIP_PIC32_DDR_H
8 #define __MICROCHIP_PIC32_DDR_H
9 
10 /* called by dram_init() function */
11 void ddr2_phy_init(void);
12 void ddr2_ctrl_init(void);
13 phys_size_t ddr2_calculate_size(void);
14 
15 /* Maximum number of agents */
16 #define NUM_AGENTS		5
17 
18 /* Board can provide agent specific parameters for arbitration by
19  * filling struct ddr2_arbiter_params for all the agents and
20  * implementing board_get_ddr_arbiter_params() to return the filled
21  * structure.
22  */
23 struct ddr2_arbiter_params {
24 	u32 min_limit;	/* min bursts to execute per arbitration */
25 	u32 req_period; /* request period threshold for accepted cmds */
26 	u32 min_cmd_acpt; /* min number of accepted cmds */
27 };
28 
29 const struct ddr2_arbiter_params *board_get_ddr_arbiter_params(void);
30 
31 #endif /* __MICROCHIP_PIC32_DDR_H */
32