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From: Sricharan R <sricharan@codeaurora.org>
To: Vinod <vkoul@kernel.org>, Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: ohad@wizery.com, robh+dt@kernel.org, mark.rutland@arm.com,
	andy.gross@linaro.org, david.brown@linaro.org,
	linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-soc@vger.kernel.org, sibis@codeaurora.org
Subject: Re: [PATCH] remoteproc: qcom: Introduce Hexagon V5 based WCSS driver
Date: Thu, 7 Jun 2018 15:02:12 +0530	[thread overview]
Message-ID: <f5b05d4f-29d6-c698-3618-4ad6e42aef54@codeaurora.org> (raw)
In-Reply-To: <20180607084348.GG16230@vkoul-mobl>

Hi Vinod,

On 6/7/2018 2:13 PM, Vinod wrote:
> On 06-06-18, 21:24, Bjorn Andersson wrote:
>> On Wed 06 Jun 21:11 PDT 2018, Vinod wrote:
>>
>>> So, wouldn't Kconfig syntax something like where we say:
>>>         M if RPMSG_QCOM_GLINK_SMEM=m
>>>         bool if RPMSG_QCOM_GLINK_SMEM=y
>>>
>>
>> If we ignore SMD for a while we have the following combinations:
>>
>> glink/wcss
>> y     y - valid
>> y     m - valid
>> y     n - valid
>> m     y - link failure (invalid)
>> m     m - valid
>> m     n - valid
>> n     y - valid (platform uses wcss, but not glink)
>> n     m - valid (-----"-----)
>> n     n - valid
>>
>> So to distill this we have the two valid cases:
>> module/no if RPMSG_QCOM_GLINK_SMEM=m
>> yes/module/no if RPMSG_QCOM_GLINK_SMEM=y
>>
>> and the way you express that in Kconfig is the somewhat awkward
>>
>>   depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
> 
> Understood now :) Yes it is awkward..
> 
> Btw we seem to have issue with link fail here when glink is m and wcss
> is y. Why don't we see link fail for glink being n? Yes I understand that
> platform uses wcss but am curious how that works out :)
 
For glink being n, the stub functions gets linked, and not for glink=m.

Regards,
 Sricharan

-- 
"QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

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      reply	other threads:[~2018-06-07  9:32 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-05  5:42 [PATCH] remoteproc: qcom: Introduce Hexagon V5 based WCSS driver Sricharan R
2018-06-05  6:19 ` Vinod
2018-06-05 12:56   ` Sricharan R
2018-06-05 16:40     ` Vinod Koul
2018-06-06  6:39       ` Sricharan R
2018-06-06  6:49         ` Vinod
2018-06-06  9:51           ` Sricharan R
2018-06-06 16:17     ` Bjorn Andersson
2018-06-07  4:11       ` Vinod
2018-06-07  4:24         ` Bjorn Andersson
2018-06-07  5:29           ` Sricharan R
2018-06-07  5:48             ` Bjorn Andersson
2018-06-07  6:36               ` Sricharan R
2018-06-07  8:43           ` Vinod
2018-06-07  9:32             ` Sricharan R [this message]

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