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memory: tegra124-emc: Fix dll_change check

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The code checking whether the specified memory timing enables DLL
in the EMRS register was reversed. DLL is enabled if bit A0 is low.
Fix the check.

Fixes: 73a7f0a906 ("memory: tegra: Add EMC (external memory controller) driver")
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Link: https://patch.msgid.link/20260126-fix-emc-dllchange-v1-1-47ad3bb63262@nvidia.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
This commit is contained in:
Mikko Perttunen
2026-01-26 15:50:42 +09:00
committed by Krzysztof Kozlowski
parent ef4d7b9975
commit 9597ab9a82
1 changed files with 1 additions and 1 deletions
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2
drivers/memory/tegra/tegra124-emc.c
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@@ -608,7 +608,7 @@ static int tegra124_emc_prepare_timing_change(struct tegra_emc *emc,
if ((last->emc_mode_1 & 0x1) == (timing->emc_mode_1 & 0x1))
dll_change = DLL_CHANGE_NONE;
else if (timing->emc_mode_1 & 0x1)
else if (!(timing->emc_mode_1 & 0x1))
dll_change = DLL_CHANGE_ON;
else
dll_change = DLL_CHANGE_OFF;