linux-kernel - Re: [PATCH] interconnect: qcom: sm8450: Revert "interconnect: qcom: sm8450: Enable sync

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Date: Mon, 15 Jan 2024 19:17:13 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
 Georgi Djakov <djakov@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
 Vinod Koul <vkoul@...nel.org>, linux-arm-msm@...r.kernel.org,
 linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: stable@...r.kernel.org
Subject: Re: [PATCH] interconnect: qcom: sm8450: Revert "interconnect: qcom:
 sm8450: Enable sync_state"

On 15.01.2024 18:59, Krzysztof Kozlowski wrote:
> On 15/01/2024 17:44, Georgi Djakov wrote:
>> On 15.01.24 17:34, Krzysztof Kozlowski wrote:
>>> Revert commit 16862f1b2110 ("interconnect: qcom: sm8450: Enable
>>> sync_state"), because it causes serial console to corrupt, later freeze
>>> and become either entirely corrupted or only print without accepting any
>>> input.
>>
>> Sounds like some driver is not requesting bandwidth and is relying on
>> bandwidth requests made by other drivers. Maybe we are missing some
>> "interconnects" property in DT?
> 
> Yes, the debug UART (console) misses the interconnects. They could be
> added but it does not change the fact that console is broken since v6.6
> and this was probably never tested on actual hardware :/

This patch? I definitely tested it out on a headless remote board..

Konrad