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4 Commits

Author SHA1 Message Date
Ye Bin
8014c4781b memory: tegra: Delete duplicated argument to '|' in function tegra210_emc_r21021_periodic_compensation 
In function tegra210_emc_r21021_periodic_compensation when calculate
emc_cfg EMC_CFG_DRAM_CLKSTOP_PD is duplicated.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Link: https://lore.kernel.org/r/20200903021542.315195-1-yebin10@huawei.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
 2020-09-09 09:00:22 +02:00
Krzysztof Kozlowski
4a661364e6 memory: tegra: tegra210-emc: fix indentation 
Use tabs instead of spaces for indentation.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200724074038.5597-25-krzk@kernel.org
 2020-08-17 20:43:54 +02:00
Thierry Reding
0553d7b204 memory: tegra: Support derated timings on Tegra210 
Derated timings are used to ensure that the memory chips keep operating
correctly at high temperatures. This adds code to support polling of the
chip operating state when high temperatures are measured on the chip and
change the refresh mode accordingly. Under very high temperatures, the
driver will switch to the derated tables to ensure proper operation of
the memory chips.

Signed-off-by: Thierry Reding <treding@nvidia.com>
 2020-06-22 13:54:57 +02:00
Joseph Lo
9b9d8632f5 memory: tegra: Add EMC scaling sequence code for Tegra210 
This patch includes the sequence for clock tuning and the dynamic
training mechanism for the clock above 800MHz.

And historically there have been different sequences to change the EMC
clock. The sequence to be used is specified in the EMC table.
However, for the currently supported upstreaming platform, only the most
recent sequence is used. So only support that in this patch.

Based on the work of Peter De Schrijver <pdeschrijver@nvidia.com>.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
 2020-06-22 13:54:57 +02:00