linux-kernel - [PATCH v7 0/7] Add DDR4 memory-controller bindings and factorise LPDDR and DDR bindings

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Message-Id: <20250922-b4-ddr-bindings-v7-0-b3dd20e54db6@gmail.com>
Date: Mon, 22 Sep 2025 12:06:13 +0200
From: Clément Le Goffic <legoffic.clement@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, Rob Herring <robh@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Julius Werner <jwerner@...omium.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, 
 Clément Le Goffic <legoffic.clement@...il.com>, 
 Clément Le Goffic <clement.legoffic@...s.st.com>
Subject: [PATCH v7 0/7] Add DDR4 memory-controller bindings and factorise
 LPDDR and DDR bindings

Introduce DDR4 bindings, which is the first DDR type to be added.
As the DDR and LPDDR use the same properties, factorise them in a
sdram-props bindings file and rename lpddr-channel into sdram-channel.

This v7 is a subset of the v6 and other prior versions, split to simplify
the review and merging process.

Changes in v7:
- None
- Link to v6: https://lore.kernel.org/all/20250909-b4-ddrperfm-upstream-v6-5-ce082cc801b5@gmail.com/

Signed-off-by: Clément Le Goffic <legoffic.clement@...il.com>
---
Clément Le Goffic (7):
      dt-bindings: memory: factorise LPDDR props into SDRAM props
      dt-bindings: memory: introduce DDR4
      dt-bindings: memory: factorise LPDDR channel binding into SDRAM channel
      dt-binding: memory: add DDR4 channel compatible
      dt-bindings: memory: SDRAM channel: standardise node name
      arm64: dts: st: add LPDDR channel to stm32mp257f-dk board
      arm64: dts: st: add DDR channel to stm32mp257f-ev1 board

 .../memory-controllers/ddr/jedec,ddr4.yaml         | 34 ++++++++
 .../memory-controllers/ddr/jedec,lpddr-props.yaml  | 74 -----------------
 .../memory-controllers/ddr/jedec,lpddr2.yaml       |  2 +-
 .../memory-controllers/ddr/jedec,lpddr3.yaml       |  2 +-
 .../memory-controllers/ddr/jedec,lpddr4.yaml       |  2 +-
 .../memory-controllers/ddr/jedec,lpddr5.yaml       |  2 +-
 ...lpddr-channel.yaml => jedec,sdram-channel.yaml} | 40 ++++++---
 .../memory-controllers/ddr/jedec,sdram-props.yaml  | 94 ++++++++++++++++++++++
 arch/arm64/boot/dts/st/stm32mp257f-dk.dts          |  7 ++
 arch/arm64/boot/dts/st/stm32mp257f-ev1.dts         |  7 ++
 10 files changed, 173 insertions(+), 91 deletions(-)
---
base-commit: 07e27ad16399afcd693be20211b0dfae63e0615f
change-id: 20250922-b4-ddr-bindings-7161e3e0af56

Best regards,
--  
Clément Le Goffic <legoffic.clement@...il.com>