Re: [PATCH v9 0/7] Add DDR4 memory-controller bindings and factorise LPDDR and DDR bindings
From: Alexandre TORGUE
Date: Thu Jan 08 2026 - 11:52:41 EST
Hi Clément
On 11/18/25 16:07, Clément Le Goffic wrote:
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.
Changes in v9:
- In the ddr4 compatible pattern :
s/ddrX-YYYY,AAAA...,ZZ/ddrX-YYYY,AAAA...-ZZ/
The comma before the "ZZ" part has been replaced with a minus.
- Add information about how the compatible is constructed in the patch 2:
"dt-bindings: memory: introduce DDR4"
- Add Krzysztof Kozlowski's trailer on patch 1
- Link to v8: https://lore.kernel.org/r/20250930-b4-ddr-bindings-v8-0-fe4d8c015a50@xxxxxxxxx
Changes in v8:
- Globally fix typo/grammar in SDRAM props bindings:
- DDR4 bindings compatible description:
- s/lpddrX,YY,ZZZZ/lpddrX-YY,ZZZZ/
- s/in lower case/lowercase/
- s/statis/static/
- s/~/-/
- Add an "s" where a plural form is used (e.g. registers) in the DDR4
binding revision-id description
- Fix the number of chars that an SPD can contain in the part number
field.
- Link to v7: https://lore.kernel.org/r/20250922-b4-ddr-bindings-v7-0-b3dd20e54db6@xxxxxxxxx
The 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@xxxxxxxxx/
Signed-off-by: Clément Le Goffic <legoffic.clement@xxxxxxxxx>
---
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
DT patches [6]&[7] applied on stm32-next.
Regards
Alex