diff options
Diffstat (limited to 'src/device/dram/lpddr4.c')
| -rw-r--r-- | src/device/dram/lpddr4.c | 44 |
1 files changed, 37 insertions, 7 deletions
diff --git a/src/device/dram/lpddr4.c b/src/device/dram/lpddr4.c index 990af9334e..3c686d0107 100644 --- a/src/device/dram/lpddr4.c +++ b/src/device/dram/lpddr4.c @@ -10,10 +10,15 @@ #include <types.h> enum lpddr4_speed_grade { + LPDDR4_1333, LPDDR4_1600, + LPDDR4_1866, + LPDDR4_2133, LPDDR4_2400, + LPDDR4_2666, LPDDR4_3200, - LPDDR4_4266 + LPDDR4_3733, + LPDDR4_4266, }; struct lpddr4_speed_attr { @@ -23,7 +28,7 @@ struct lpddr4_speed_attr { }; /** - * LPDDR4 speed attributes derived from JEDEC 209-4C table 210 + * LPDDR4 speed attributes derived from JEDEC 209-4C and industry norms * * min_clock_mhz = Previous max_clock_mhz + 1 * max_clock_mhz = 1000/min_tCk_avg(ns) @@ -31,24 +36,49 @@ struct lpddr4_speed_attr { * May be slightly less than the actual max MT/s */ static const struct lpddr4_speed_attr lpddr4_speeds[] = { - [LPDDR4_1600] = { + [LPDDR4_1333] = { .min_clock_mhz = 10, + .max_clock_mhz = 667, + .reported_mts = 1333, + }, + [LPDDR4_1600] = { + .min_clock_mhz = 668, .max_clock_mhz = 800, .reported_mts = 1600 }, - [LPDDR4_2400] = { + [LPDDR4_1866] = { .min_clock_mhz = 801, + .max_clock_mhz = 934, + .reported_mts = 1866, + }, + [LPDDR4_2133] = { + .min_clock_mhz = 935, + .max_clock_mhz = 1067, + .reported_mts = 2133 + }, + [LPDDR4_2400] = { + .min_clock_mhz = 1068, .max_clock_mhz = 1200, .reported_mts = 2400 }, - [LPDDR4_3200] = { + [LPDDR4_2666] = { .min_clock_mhz = 1201, + .max_clock_mhz = 1333, + .reported_mts = 2666 + }, + [LPDDR4_3200] = { + .min_clock_mhz = 1334, .max_clock_mhz = 1600, .reported_mts = 3200 }, - [LPDDR4_4266] = { + [LPDDR4_3733] = { .min_clock_mhz = 1601, - .max_clock_mhz = 2137, + .max_clock_mhz = 1867, + .reported_mts = 3733 + }, + [LPDDR4_4266] = { + .min_clock_mhz = 1868, + .max_clock_mhz = 2134, .reported_mts = 4266 }, }; |