User:Jemk/DRAM

= DRAM = new u-boot Cubietruck   dcdc3_vol        = 1300 dram_clk          = 600 mbus_clk          = 400 dram_type         = 3 dram_rank_num     = 1 dram_chip_density = 4096 dram_io_width     = 8 dram_bus_width    = 32 dram_cas          = 9 dram_zq           = 0x2c (0x10d1800) dram_odt_en       = 3 dram_tpr0         = 0x3c9688b4 dram_tpr1         = 0xa090 dram_tpr2         = 0x2be00 dram_tpr3         = 0x82222 dram_emr1         = 0x42 dram_emr2         = 0x10 dram_emr3         = 0x0 dqs_gating_delay  = 0x07070707 active_windowing  = 1 Lane phase adjustments: [0, 0, 0, 0] Error statistics from memtester: [bitflip=22, solidbits=13] Total number of successful memtester runs: 197  Best luminance at the height 0.5 is above 0x031111, score = 0.651 Best luminance at the height 1.0 is above 0x031111, score = 0.524 Best luminance at the height 2.0 is above 0x021111, score = 0.409 Best luminance at the height 4.0 is above 0x021111, score = 0.319  Read errors per lane: [1, 0, 12, 0]. Lane 1 is the most noisy/problematic. Errors from the lane 3 are not intersecting with the errors from the worst lane 1. Write errors per lane: [0, 0, 0, 22]. Lane 0 is the most noisy/problematic.

new u-boot Cubietruck (fixed dram_zq)   dcdc3_vol        = 1300 dram_clk          = 600 mbus_clk          = 400 dram_type         = 3 dram_rank_num     = 1 dram_chip_density = 4096 dram_io_width     = 8 dram_bus_width    = 32 dram_cas          = 9 dram_zq           = 0x10d3900 dram_odt_en       = 3 dram_tpr0         = 0x3c9688b4 dram_tpr1         = 0xa090 dram_tpr2         = 0x2be00 dram_tpr3         = 0x0 dram_emr1         = 0x42 dram_emr2         = 0x10 dram_emr3         = 0x0 dqs_gating_delay  = 0x07070707 active_windowing  = 1 Lane phase adjustments: [0, 0, 0, 0] Error statistics from memtester: [bitflip=16, solidbits=2, bitspread=1] Total number of successful memtester runs: 313  Best luminance at the height 0.5 is above 0x031111, score = 0.718 Best luminance at the height 1.0 is above 0x031111, score = 0.604 Best luminance at the height 2.0 is above 0x021111, score = 0.501 Best luminance at the height 4.0 is above 0x011111, score = 0.426  Read errors per lane: [1, 0, 13, 0]. Lane 1 is the most noisy/problematic. Errors from the lane 3 are not intersecting with the errors from the worst lane 1. Write errors per lane: [2, 0, 1, 2]. Lane 3 is the most noisy/problematic. Errors from the lane 0 are not intersecting with the errors from the worst lane 3. Errors from the lane 1 are not intersecting with the errors from the worst lane 3.

Cubietruck
dram_clk=552MHz dcdc3=1.3V

dram_clk=600MHz dcdc3=1.3V