From: Chris Packham <chris.pack...@alliedtelesis.co.nz> Measurements on actual hardware shown that the read ODT is early by 3 clocks. Adjust the calculation to avoid this.
Signed-off-by: Chris Packham <chris.pack...@alliedtelesis.co.nz> [upstream https://github.com/MarvellEmbeddedProcessors/mv-ddr-marvell/pull/22] Signed-off-by: Chris Packham <judge.pack...@gmail.com> --- drivers/ddr/marvell/a38x/ddr3_training_hw_algo.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/ddr/marvell/a38x/ddr3_training_hw_algo.c b/drivers/ddr/marvell/a38x/ddr3_training_hw_algo.c index ce9a47fc2ce0..58ffb205072e 100644 --- a/drivers/ddr/marvell/a38x/ddr3_training_hw_algo.c +++ b/drivers/ddr/marvell/a38x/ddr3_training_hw_algo.c @@ -91,8 +91,8 @@ int ddr3_tip_write_additional_odt_setting(u32 dev_num, u32 if_id) min_read_sample = read_sample[cs_num]; } - min_read_sample = min_read_sample - 1; - max_read_sample = max_read_sample + 4 + (max_phase + 1) / 2 + 1; + min_read_sample = min_read_sample + 2; + max_read_sample = max_read_sample + 7 + (max_phase + 1) / 2 + 1; if (min_read_sample >= 0xf) min_read_sample = 0xf; if (max_read_sample >= 0x1f) -- 2.25.1
