From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Luca Weiss <luca@lucaweiss.eu>,
Bjorn Andersson <andersson@kernel.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Manivannan Sadhasivam <mani@kernel.org>,
Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
Dzmitry Sankouski <dsankouski@gmail.com>
Cc: ~postmarketos/upstreaming@lists.sr.ht,
phone-devel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dt-bindings: remoteproc: qcom,adsp: Re-add cx-supply
Date: Mon, 8 Dec 2025 17:33:00 +0100 [thread overview]
Message-ID: <d81e017e-e317-402d-a4bf-7ddfa033299e@oss.qualcomm.com> (raw)
In-Reply-To: <20251207-adsp-cx-fixup-v1-1-0471bf2c5f33@lucaweiss.eu>
On 12/7/25 11:35 AM, Luca Weiss wrote:
> Some boards (e.g. sdm845-samsung-starqltechn) provide a cx-supply
> reference for the SLPI PAS.
>
> The Linux driver unconditionally tries getting "cx" and "px" supplies,
> so it actually is used.
>
> Fixes: 3d447dcdae53 ("dt-bindings: remoteproc: qcom,adsp: Make msm8974 use CX as power domain")
> Signed-off-by: Luca Weiss <luca@lucaweiss.eu>
> ---
> There's literally one board using this upstream, judging from that I'm
> not sure this is a misuse of cx-supply or what exactly. An alternative
> to this patch is of course removing the usage in
> sdm845-samsung-starqltechn, but as it stands right now the patch under
> "Fixes" introduces a dtbs_check warning.
FWIW that's likely a hack (because IIUC it needs to power up some
regulator for the sensor devices to work) but that's "fine"
I don't know if there's a better way to handle it though.. I think it's
a board design "issue", since the DSP has access to some GPIOs but it
seems like that wasn't utilized
I'm open to suggestions
+Dzmitry-the-starqltechn-submitter
Konrad
next prev parent reply other threads:[~2025-12-08 16:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-07 10:35 [PATCH] dt-bindings: remoteproc: qcom,adsp: Re-add cx-supply Luca Weiss
2025-12-08 16:33 ` Konrad Dybcio [this message]
2025-12-11 14:41 ` Dzmitry Sankouski
2025-12-09 21:19 ` Rob Herring (Arm)
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