linux-kernel - Re: [PATCH v5 0/2] misc: fastrpc: FastRPC reserved memory assignment for SDM845 SLPI

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Message-Id: <171820418971.165525.3637990952357907188.b4-ty@linaro.org>
Date: Wed, 12 Jun 2024 15:56:29 +0100
From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To: Amol Maheshwari <amahesh@....qualcomm.com>, 
 Arnd Bergmann <arnd@...db.de>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Dylan Van Assche <me@...anvanassche.be>
Cc: Caleb Connolly <caleb.connolly@...aro.org>, phone-devel@...r.kernel.org, 
 ~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH v5 0/2] misc: fastrpc: FastRPC reserved memory
 assignment for SDM845 SLPI


On Fri, 24 May 2024 18:14:01 +0200, Dylan Van Assche wrote:
> * About *
> 
> The Qualcomm SDM845 SoC has a separate SLPI (Sensor Low Power Island)
> DSP for sensors connected to the SoC which is responsible for exposing
> sensors to userspace, power saving, and other features.
> While sensors are connected to GPIOs of the SoC, they cannot be used
> because the hypervisor blocks direct access to the sensors, thus the
> DSP must be used to access any sensor on this SoC. The SLPI DSP uses a
> GLink edge (dsps) to communicate with the host and has a FastRPC interface
> to load files from the host filesystem such as sensor configuration files.
> The FastRPC interface does not use regular FastRPC Compute Banks
> but instead uses an allocated CMA region through which communication happens.
> 
> [...]

Applied, thanks!

[1/2] misc: fastrpc: support complete DMA pool access to the DSP
      commit: 9cee10334bdfa9db771b006fe2eba060f8719687
[2/2] misc: fastrpc: use coherent pool for untranslated Compute Banks
      commit: 0ff3de43062785462d9acede2987f35525b1c0ba

Best regards,
-- 
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>