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rockchip: rk3399: lower down kevin board sdram frequency to 800MHz
we found some board not stable when sdram run 933Mhz, before we fix it, we need to lower down the sdram frequency to 800MHz. In this patch we modify the DQS delay from 0x280 to 0x260, extend the DQS window. BRANCH=None BUG=chrome-os-partner:56940 TEST=Booted Kevin. Change-Id: I5eab6bbe96f0dae095c5353403292022e7a25421 Signed-off-by: Lin Huang <hl@rock-chips.com> Reviewed-on: https://chromium-review.googlesource.com/382724 Commit-Ready: Douglas Anderson <dianders@chromium.org> Tested-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org>
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d7576f6e53
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877a7f6ad2
2 changed files with 21 additions and 23 deletions
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@ -56,10 +56,8 @@ static enum dram_speeds get_sdram_index(void)
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return dram_200MHz;
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case 3:
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return dram_666MHz_NO_ODT;
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case 4:
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return dram_800MHz;
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default:
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return dram_933MHz;
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return dram_800MHz;
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}
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if (IS_ENABLED(CONFIG_BOARD_GOOGLE_GRU))
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@ -660,11 +660,11 @@ struct rk3399_sdram_params params = {
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0x00000000, /* DENALI_PHY_56_DATA */
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0x00000000, /* DENALI_PHY_57_DATA */
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0x00000000, /* DENALI_PHY_58_DATA */
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0x02800280, /* DENALI_PHY_59_DATA */
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0x02800280, /* DENALI_PHY_60_DATA */
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0x02800280, /* DENALI_PHY_61_DATA */
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0x02800280, /* DENALI_PHY_62_DATA */
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0x00000280, /* DENALI_PHY_63_DATA */
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0x02600260, /* DENALI_PHY_59_DATA */
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0x02600260, /* DENALI_PHY_60_DATA */
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0x02600260, /* DENALI_PHY_61_DATA */
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0x02600260, /* DENALI_PHY_62_DATA */
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0x00000260, /* DENALI_PHY_63_DATA */
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0x00000000, /* DENALI_PHY_64_DATA */
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0x00000000, /* DENALI_PHY_65_DATA */
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0x00000000, /* DENALI_PHY_66_DATA */
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@ -788,11 +788,11 @@ struct rk3399_sdram_params params = {
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0x00000000, /* DENALI_PHY_184_DATA */
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0x00000000, /* DENALI_PHY_185_DATA */
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0x00000000, /* DENALI_PHY_186_DATA */
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0x02800280, /* DENALI_PHY_187_DATA */
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0x02800280, /* DENALI_PHY_188_DATA */
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0x02800280, /* DENALI_PHY_189_DATA */
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0x02800280, /* DENALI_PHY_190_DATA */
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0x00000280, /* DENALI_PHY_191_DATA */
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0x02600260, /* DENALI_PHY_187_DATA */
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0x02600260, /* DENALI_PHY_188_DATA */
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0x02600260, /* DENALI_PHY_189_DATA */
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0x02600260, /* DENALI_PHY_190_DATA */
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0x00000260, /* DENALI_PHY_191_DATA */
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0x00000000, /* DENALI_PHY_192_DATA */
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0x00000000, /* DENALI_PHY_193_DATA */
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0x00000000, /* DENALI_PHY_194_DATA */
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@ -916,11 +916,11 @@ struct rk3399_sdram_params params = {
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0x00000000, /* DENALI_PHY_312_DATA */
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0x00000000, /* DENALI_PHY_313_DATA */
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0x00000000, /* DENALI_PHY_314_DATA */
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0x02800280, /* DENALI_PHY_315_DATA */
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0x02800280, /* DENALI_PHY_316_DATA */
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0x02800280, /* DENALI_PHY_317_DATA */
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0x02800280, /* DENALI_PHY_318_DATA */
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0x00000280, /* DENALI_PHY_319_DATA */
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0x02600260, /* DENALI_PHY_315_DATA */
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0x02600260, /* DENALI_PHY_316_DATA */
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0x02600260, /* DENALI_PHY_317_DATA */
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0x02600260, /* DENALI_PHY_318_DATA */
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0x00000260, /* DENALI_PHY_319_DATA */
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0x00000000, /* DENALI_PHY_320_DATA */
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0x00000000, /* DENALI_PHY_321_DATA */
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0x00000000, /* DENALI_PHY_322_DATA */
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@ -1044,11 +1044,11 @@ struct rk3399_sdram_params params = {
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0x00000000, /* DENALI_PHY_440_DATA */
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0x00000000, /* DENALI_PHY_441_DATA */
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0x00000000, /* DENALI_PHY_442_DATA */
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0x02800280, /* DENALI_PHY_443_DATA */
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0x02800280, /* DENALI_PHY_444_DATA */
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0x02800280, /* DENALI_PHY_445_DATA */
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0x02800280, /* DENALI_PHY_446_DATA */
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0x00000280, /* DENALI_PHY_447_DATA */
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0x02600260, /* DENALI_PHY_443_DATA */
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0x02600260, /* DENALI_PHY_444_DATA */
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0x02600260, /* DENALI_PHY_445_DATA */
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0x02600260, /* DENALI_PHY_446_DATA */
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0x00000260, /* DENALI_PHY_447_DATA */
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0x00000000, /* DENALI_PHY_448_DATA */
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0x00000000, /* DENALI_PHY_449_DATA */
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0x00000000, /* DENALI_PHY_450_DATA */
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