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Diffstat (limited to 'board/freescale/t4rdb/ddr.h')
| -rw-r--r-- | board/freescale/t4rdb/ddr.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/board/freescale/t4rdb/ddr.h b/board/freescale/t4rdb/ddr.h new file mode 100644 index 0000000..7b85476 --- /dev/null +++ b/board/freescale/t4rdb/ddr.h @@ -0,0 +1,78 @@ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __DDR_H__ +#define __DDR_H__ +struct board_specific_parameters { + u32 n_ranks; + u32 datarate_mhz_high; + u32 rank_gb; + u32 clk_adjust; + u32 wrlvl_start; + u32 wrlvl_ctl_2; + u32 wrlvl_ctl_3; +}; + +/* + * These tables contain all valid speeds we want to override with board + * specific parameters. datarate_mhz_high values need to be in ascending order + * for each n_ranks group. + */ +static const struct board_specific_parameters udimm0[] = { + /* + * memory controller 0 + * num| hi| rank| clk| wrlvl | wrlvl | wrlvl + * ranks| mhz| GB |adjst| start | ctl2 | ctl3 + */ + {2, 1350, 4, 4, 8, 0x0809090b, 0x0c0c0d0a}, + {2, 1350, 0, 5, 7, 0x0709090b, 0x0c0c0d09}, + {2, 1666, 4, 4, 8, 0x080a0a0d, 0x0d10100b}, + {2, 1666, 0, 5, 7, 0x080a0a0c, 0x0d0d0e0a}, + {2, 1900, 0, 4, 8, 0x090a0b0e, 0x0f11120c}, + {2, 2140, 0, 4, 8, 0x090a0b0e, 0x0f11120c}, + {1, 1350, 0, 5, 8, 0x0809090b, 0x0c0c0d0a}, + {1, 1700, 0, 5, 8, 0x080a0a0c, 0x0c0d0e0a}, + {1, 1900, 0, 4, 8, 0x080a0a0c, 0x0e0e0f0a}, + {1, 2140, 0, 4, 8, 0x090a0b0c, 0x0e0f100b}, + {} +}; + +static const struct board_specific_parameters rdimm0[] = { + /* + * memory controller 0 + * num| hi| rank| clk| wrlvl | wrlvl | wrlvl + * ranks| mhz| GB |adjst| start | ctl2 | ctl3 + */ + {4, 1350, 0, 5, 9, 0x08070605, 0x06070806}, + {4, 1666, 0, 5, 11, 0x0a080706, 0x07090906}, + {4, 2140, 0, 5, 12, 0x0b090807, 0x080a0b07}, + {2, 1350, 0, 5, 9, 0x08070605, 0x06070806}, + {2, 1666, 0, 5, 11, 0x0a090806, 0x08090a06}, + {2, 2140, 0, 5, 12, 0x0b090807, 0x080a0b07}, + {1, 1350, 0, 5, 9, 0x08070605, 0x06070806}, + {1, 1666, 0, 5, 11, 0x0a090806, 0x08090a06}, + {1, 2140, 0, 4, 12, 0x0b090807, 0x080a0b07}, + {} +}; + +/* + * The three slots have slightly different timing. The center values are good + * for all slots. We use identical speed tables for them. In future use, if + * DIMMs require separated tables, make more entries as needed. + */ +static const struct board_specific_parameters *udimms[] = { + udimm0, +}; + +/* + * The three slots have slightly different timing. See comments above. + */ +static const struct board_specific_parameters *rdimms[] = { + rdimm0, +}; + + +#endif |