linux-kernel - Re: [PATCH v9 1/3] dt-bindings: memory-controllers: Add STM32 Octo Memory Manager controller

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Message-ID: <174439138531.3430719.4031301893879549125.robh@kernel.org>
Date: Fri, 11 Apr 2025 12:09:45 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Patrice Chotard <patrice.chotard@...s.st.com>
Cc: linux-stm32@...md-mailman.stormreply.com,
	christophe.kerello@...s.st.com, linux-kernel@...r.kernel.org,
	Catalin Marinas <catalin.marinas@....com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Will Deacon <will@...nel.org>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzk@...nel.org>, devicetree@...r.kernel.org
Subject: Re: [PATCH v9 1/3] dt-bindings: memory-controllers: Add STM32 Octo
 Memory Manager controller


On Thu, 10 Apr 2025 11:27:42 +0200, Patrice Chotard wrote:
> Add bindings for STM32 Octo Memory Manager (OMM) controller.
> 
> OMM manages:
>   - the muxing between 2 OSPI busses and 2 output ports.
>     There are 4 possible muxing configurations:
>       - direct mode (no multiplexing): OSPI1 output is on port 1 and OSPI2
>         output is on port 2
>       - OSPI1 and OSPI2 are multiplexed over the same output port 1
>       - swapped mode (no multiplexing), OSPI1 output is on port 2,
>         OSPI2 output is on port 1
>       - OSPI1 and OSPI2 are multiplexed over the same output port 2
>   - the split of the memory area shared between the 2 OSPI instances.
>   - chip select selection override.
>   - the time between 2 transactions in multiplexed mode.
> 
> Signed-off-by: Patrice Chotard <patrice.chotard@...s.st.com>
> ---
>  .../memory-controllers/st,stm32mp25-omm.yaml       | 226 +++++++++++++++++++++
>  1 file changed, 226 insertions(+)
> 

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>