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| author | Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt> | 2024-07-04 14:31:20 +0300 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2024-07-29 18:35:19 +0300 |
| commit | 649f4783dcda7400bbed866140df504d09a3b135 (patch) | |
| tree | 257e5bf8d160d83831c58c8fd99678c75add618d /drivers/memory | |
| parent | 8400291e289ee6b2bf9779ff1c83a291501f017b (diff) | |
| download | linux-649f4783dcda7400bbed866140df504d09a3b135.tar.xz | |
memory: tegra: Remove periodic compensation duplicate calls
Prior to calling periodic_compensation_handler() the code is doing one
extra DRAM delay reading which is unnecessary as this is already done
in periodic_compensation_handler(), so remove these extra calls.
Signed-off-by: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>
Link: https://lore.kernel.org/r/20240704-tegra210_emcfreq-v4-1-3e450503c555@tecnico.ulisboa.pt
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Diffstat (limited to 'drivers/memory')
| -rw-r--r-- | drivers/memory/tegra/tegra210-emc-cc-r21021.c | 19 |
1 files changed, 2 insertions, 17 deletions
diff --git a/drivers/memory/tegra/tegra210-emc-cc-r21021.c b/drivers/memory/tegra/tegra210-emc-cc-r21021.c index 4cb608c71ead..9ec49ced8f91 100644 --- a/drivers/memory/tegra/tegra210-emc-cc-r21021.c +++ b/drivers/memory/tegra/tegra210-emc-cc-r21021.c @@ -492,7 +492,6 @@ static u32 tegra210_emc_r21021_periodic_compensation(struct tegra210_emc *emc) }; struct tegra210_emc_timing *last = emc->last; unsigned int items = ARRAY_SIZE(list), i; - unsigned long delay; if (last->periodic_training) { emc_dbg(emc, PER_TRAIN, "Periodic training starting\n"); @@ -530,18 +529,9 @@ static u32 tegra210_emc_r21021_periodic_compensation(struct tegra210_emc *emc) /* * 2. osc kick off - this assumes training and dvfs have set * correct MR23. - */ - tegra210_emc_start_periodic_compensation(emc); - - /* + * * 3. Let dram capture its clock tree delays. - */ - delay = tegra210_emc_actual_osc_clocks(last->run_clocks); - delay *= 1000; - delay /= last->rate + 1; - udelay(delay); - - /* + * * 4. Check delta wrt previous values (save value if margin * exceeds what is set in table). */ @@ -734,11 +724,6 @@ static void tegra210_emc_r21021_set_clock(struct tegra210_emc *emc, u32 clksrc) EMC_EMC_STATUS_DRAM_IN_SELF_REFRESH_MASK, 0); - tegra210_emc_start_periodic_compensation(emc); - - delay = 1000 * tegra210_emc_actual_osc_clocks(last->run_clocks); - udelay((delay / last->rate) + 2); - value = periodic_compensation_handler(emc, DVFS_SEQUENCE, fake, next); value = (value * 128 * next->rate / 1000) / 1000000; |