From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Maulik Shah <maulik.shah@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Kamal Wadhwa <kamal.wadhwa@oss.qualcomm.com>,
Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
Mark Brown <broonie@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] soc: qcom: rpmh-rsc: Skip read requests on unsupported platforms
Date: Thu, 10 Sep 2026 11:14:08 +0200 [thread overview]
Message-ID: <3058d570-aeb9-4f73-831c-c30626296006@oss.qualcomm.com> (raw)
In-Reply-To: <20260910-rsc_read-v1-2-c9b7fa3cdde2@oss.qualcomm.com>
On 9/10/26 10:53 AM, Maulik Shah wrote:
> On some platforms AOSS do not respond to read requests. Read request in
> such cases will consume the ACTIVE TCS but forever waits for a response
> blocking the subsequent write requests.
>
> Skip issuing read commands on sm8150 and sc8180x platforms. For such
> platforms return success to the caller with the resource level at zero
> to avoid the caller taking any action on error code.
FWIW, *some* reads (e.g. RPMH_REGULATOR_REG_ENABLE) seem to work on 8180:
https://lore.kernel.org/linux-arm-msm/14bb6196-8274-4c94-922e-4ec8e2d7f2e5@oss.qualcomm.com/
Konrad
prev parent reply other threads:[~2026-09-10 9:14 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-10 8:53 [PATCH 0/2] soc: qcom: rpmh-rsc: Updates for RPMh read requests Maulik Shah
2026-09-10 8:53 ` [PATCH 1/2] soc: qcom: rpmh-rsc: Update CMD_MSGID_LEN to 4 bytes for read request Maulik Shah
2026-09-10 9:01 ` Konrad Dybcio
2026-09-11 4:53 ` Maulik Shah
2026-09-10 11:59 ` Mukesh Ojha
2026-09-10 13:51 ` Bjorn Andersson
2026-09-11 8:14 ` Maulik Shah
2026-09-10 8:53 ` [PATCH 2/2] soc: qcom: rpmh-rsc: Skip read requests on unsupported platforms Maulik Shah
2026-09-10 9:14 ` Konrad Dybcio [this message]
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