linux-kernel - [PATCH v4 0/7] memory: tegra: Cleanup Tegra210 EMC frequency scaling

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Message-Id: <20240704-tegra210_emcfreq-v4-0-3e450503c555@tecnico.ulisboa.pt>
Date: Thu, 04 Jul 2024 12:31:19 +0100
From: Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
To: Krzysztof Kozlowski <krzk@...nel.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Jonathan Hunter <jonathanh@...dia.com>
Cc: linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org, 
 Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
Subject: [PATCH v4 0/7] memory: tegra: Cleanup Tegra210 EMC frequency
 scaling

Hello,

This patch series consists of a general cleanup of the Tegra210 EMC
frequency scaling code for revision 7.

Currently the code is relying heavily on a function, update_clock_tree_delay(),
that is responsible for too many things, making it long and confusing.
The general idea with these patches is to simplify this function and its
surrounding code, making it more modular.

The motivation behind these changes (besides improving readability and
maintainability) is to make it simpler to add support in the future for
frequency change revisions other than 7, where we can reuse a large
portion of the modularized code rather than essentially repeating 2k
lines of code with minimal changes.

There are no functional changes with this patch set, as it is only meant
as preparation for following patches where revision 6 support is added.

Signed-off-by: Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
---
Changes in v4:
- PATCH 07/07: Add missing parenthesis around operands when calculating
  delay
- Link to v3: https://lore.kernel.org/r/20240507093056.3921-1-diogo.ivo@tecnico.ulisboa.pt

---
Diogo Ivo (7):
      memory: tegra: Remove periodic compensation duplicate calls
      memory: tegra: Move DQSOSC measurement to common place
      memory: tegra: Reword and correct comments
      memory: tegra: Change macros to interpret parameter as integer
      memory: tegra: Loop update_clock_tree_delay()
      memory: tegra: Move compare/update current delay values to a function
      memory: tegra: Rework update_clock_tree_delay()

 drivers/memory/tegra/tegra210-emc-cc-r21021.c | 429 ++++++--------------------
 1 file changed, 86 insertions(+), 343 deletions(-)
---
base-commit: 22a40d14b572deb80c0648557f4bd502d7e83826
change-id: 20240704-tegra210_emcfreq-9d2466310cec

Best regards,
-- 
Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>