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Message-ID: <84923a4e-6c8e-45b7-b7a8-1a4deeb72347@linaro.org>
Date: Tue, 19 Mar 2024 06:29:30 +0100
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Subject: Re: [PATCH v13 2/4] dt-bindings: remoteproc: add Tightly Coupled
 Memory (TCM) bindings
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To: Tanmay Shah <tanmay.shah@amd.com>, andersson@kernel.org,
 mathieu.poirier@linaro.org, robh+dt@kernel.org,
 krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
 michal.simek@amd.com, ben.levinsky@amd.com
Cc: linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org,
 linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
 Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
References: <20240311175926.1625180-1-tanmay.shah@amd.com>
 <20240311175926.1625180-3-tanmay.shah@amd.com>
From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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In-Reply-To: <20240311175926.1625180-3-tanmay.shah@amd.com>
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On 11/03/2024 18:59, Tanmay Shah wrote:
> From: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
> 
> Introduce bindings for TCM memory address space on AMD-xilinx Zynq
> UltraScale+ platform. It will help in defining TCM in device-tree
> and make it's access platform agnostic and data-driven.
> 
> Tightly-coupled memories(TCMs) are low-latency memory that provides
> predictable instruction execution and predictable data load/store
> timing. Each Cortex-R5F processor contains two 64-bit wide 64 KB memory
> banks on the ATCM and BTCM ports, for a total of 128 KB of memory.
> 
> The TCM resources(reg, reg-names and power-domain) are documented for
> each TCM in the R5 node. The reg and reg-names are made as required
> properties as we don't want to hardcode TCM addresses for future
> platforms and for zu+ legacy implementation will ensure that the
> old dts w/o reg/reg-names works and stable ABI is maintained.
> 
> It also extends the examples for TCM split and lockstep modes.
> 
> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
> Signed-off-by: Tanmay Shah <tanmay.shah@amd.com>
> ---

I responded under my reviewed-tag, but to be clear, also here:

This patch has is not ready. Please do not merge.

Best regards,
Krzysztof