linux-kernel - [v2,0/2] Add an interface to get current DDR data rate

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Message-ID: <20250207014437.17920-1-crystal.guo@mediatek.com>
Date: Fri, 7 Feb 2025 09:42:46 +0800
From: Crystal Guo <crystal.guo@...iatek.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, Rob Herring <robh@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Matthias Brugger
	<matthias.bgg@...il.com>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, Crystal Guo
	<crystal.guo@...iatek.com>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org>,
	<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [v2,0/2] Add an interface to get current DDR data rate

*** BLURB HERE ***
This series is based on linux-next, tag: next-20250206.

Vcore DVFS feature need know the current DDR data rate.
Add MediaTek DRAMC driver to provide an interface that can
obtain current DDR data rate.

---
Changes in v2:
- Remove pr_info and pr_err, use dev_err or dev_err_probe to print
  error message;
- Replace module_init by module_platform_driver;
- Remove unnecessary global variables;
- Change fmeter-verison to platform data;
- Remove mtk-dramc.h;
- Refine compatible to "mediatek,mt8196-dramc";
- Refine CONFIG name to MEDIATEK_MC;
- Fix yaml build errors, remove unnecessary properties on yaml file.

Link to v1:
https://patchwork.kernel.org/patch/13904862

Crystal Guo (2):
  memory/mediatek: Add an interface to get current DDR data rate
  dt-bindings: memory-controllers: Add MediaTek DRAM controller
    interface

 .../memory-controllers/mediatek,dramc.yaml    |  44 ++++
 drivers/memory/Kconfig                        |   1 +
 drivers/memory/Makefile                       |   1 +
 drivers/memory/mediatek/Kconfig               |  21 ++
 drivers/memory/mediatek/Makefile              |   2 +
 drivers/memory/mediatek/mtk-dramc.c           | 196 ++++++++++++++++++
 6 files changed, 265 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/memory-controllers/mediatek,dramc.yaml
 create mode 100644 drivers/memory/mediatek/Kconfig
 create mode 100644 drivers/memory/mediatek/Makefile
 create mode 100644 drivers/memory/mediatek/mtk-dramc.c

-- 
2.18.0