1 /*
2  * (c) 2015 Purna Chandra Mandal <purna.mandal@microchip.com>
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  *
6  */
7 
8 #ifndef __MICROCHIP_PIC32_DDR_H
9 #define __MICROCHIP_PIC32_DDR_H
10 
11 /* called by initdram() function */
12 void ddr2_phy_init(void);
13 void ddr2_ctrl_init(void);
14 phys_size_t ddr2_calculate_size(void);
15 
16 /* Maximum number of agents */
17 #define NUM_AGENTS		5
18 
19 /* Board can provide agent specific parameters for arbitration by
20  * filling struct ddr2_arbiter_params for all the agents and
21  * implementing board_get_ddr_arbiter_params() to return the filled
22  * structure.
23  */
24 struct ddr2_arbiter_params {
25 	u32 min_limit;	/* min bursts to execute per arbitration */
26 	u32 req_period; /* request period threshold for accepted cmds */
27 	u32 min_cmd_acpt; /* min number of accepted cmds */
28 };
29 
30 const struct ddr2_arbiter_params *board_get_ddr_arbiter_params(void);
31 
32 #endif /* __MICROCHIP_PIC32_DDR_H */
33