From: Krzysztof Kozlowski <krzk@kernel.org>
To: "Clément Le Goffic" <legoffic.clement@gmail.com>,
"Rob Herring" <robh@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Julius Werner" <jwerner@chromium.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Maxime Coquelin" <mcoquelin.stm32@gmail.com>,
"Alexandre Torgue" <alexandre.torgue@foss.st.com>
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
"Clément Le Goffic" <clement.legoffic@foss.st.com>
Subject: Re: [PATCH v8 1/7] dt-bindings: memory: factorise LPDDR props into SDRAM props
Date: Thu, 23 Oct 2025 15:12:23 +0200 [thread overview]
Message-ID: <275742a1-de32-483a-b608-8f5b28e282b9@kernel.org> (raw)
In-Reply-To: <20250930-b4-ddr-bindings-v8-1-fe4d8c015a50@gmail.com>
On 30/09/2025 10:46, Clément Le Goffic wrote:
> From: Clément Le Goffic <clement.legoffic@foss.st.com>
>
> LPDDR and DDR bindings are SDRAM types and are likely to share the same
> properties (at least for density, io-width and reg).
> To avoid bindings duplication, factorise the properties.
>
> The compatible description has been updated because the MR (Mode
> registers) used to get manufacturer ID and revision ID are not present
> in case of DDR.
> Those information should be in a SPD (Serial Presence Detect) EEPROM in
> case of DIMM module or are known in case of soldered memory chips as
> they are in the datasheet of the memory chips.
>
> Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
> Signed-off-by: Clément Le Goffic <legoffic.clement@gmail.com>
Wearing DT hat:
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Best regards,
Krzysztof
next prev parent reply other threads:[~2025-10-23 13:12 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-30 8:46 [PATCH v8 0/7] Add DDR4 memory-controller bindings and factorise LPDDR and DDR bindings Clément Le Goffic
2025-09-30 8:46 ` [PATCH v8 1/7] dt-bindings: memory: factorise LPDDR props into SDRAM props Clément Le Goffic
2025-10-23 13:12 ` Krzysztof Kozlowski [this message]
2025-09-30 8:46 ` [PATCH v8 2/7] dt-bindings: memory: introduce DDR4 Clément Le Goffic
2025-10-23 13:21 ` Krzysztof Kozlowski
2025-10-24 9:21 ` Clément Le Goffic
2025-09-30 8:46 ` [PATCH v8 3/7] dt-bindings: memory: factorise LPDDR channel binding into SDRAM channel Clément Le Goffic
2025-09-30 8:46 ` [PATCH v8 4/7] dt-binding: memory: add DDR4 channel compatible Clément Le Goffic
2025-09-30 8:46 ` [PATCH v8 5/7] dt-bindings: memory: SDRAM channel: standardise node name Clément Le Goffic
2025-09-30 8:46 ` [PATCH v8 6/7] arm64: dts: st: add LPDDR channel to stm32mp257f-dk board Clément Le Goffic
2025-09-30 8:46 ` [PATCH v8 7/7] arm64: dts: st: add DDR channel to stm32mp257f-ev1 board Clément Le Goffic
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