From: Boris Brezillon <boris.brezillon@collabora.com>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: airlied@gmail.com, daniel@ffwll.ch, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, wenst@chromium.org,
steven.price@arm.com, alyssa.rosenzweig@collabora.com,
robh@kernel.org, dri-devel@lists.freedesktop.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel@collabora.com
Subject: Re: [PATCH v1 RESEND 2/2] drm/panfrost: Add basic support for speed binning
Date: Fri, 31 Mar 2023 11:46:17 +0200 [thread overview]
Message-ID: <20230331114617.6932e609@collabora.com> (raw)
In-Reply-To: <5814d779-0635-43fe-3fe8-31c130f05b3a@collabora.com>
On Fri, 31 Mar 2023 10:11:07 +0200
AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
wrote:
> Il 23/03/23 10:08, AngeloGioacchino Del Regno ha scritto:
> > Some SoCs implementing ARM Mali GPUs are subject to speed binning:
> > this means that some versions of the same SoC model may need to be
> > limited to a slower frequency compared to the other:
> > this is being addressed by reading nvmem (usually, an eFuse array)
> > containing a number that identifies the speed binning of the chip,
> > which is usually related to silicon quality.
> >
> > To address such situation, add basic support for reading the
> > speed-bin through nvmem, as to make it possible to specify the
> > supported hardware in the OPP table for GPUs.
> > This commit also keeps compatibility with any platform that does
> > not specify (and does not even support) speed-binning.
> >
> > Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>
> Hello maintainers,
> I've seen that this got archived in the dri-devel patchwork; because of that and
> only that, I'm sending this ping to get this patch reviewed.
Series queued to drm-misc-next.
prev parent reply other threads:[~2023-03-31 9:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-23 9:08 [PATCH v1 RESEND 0/2] Panfrost: GPU Speed-binning support via OPP AngeloGioacchino Del Regno
2023-03-23 9:08 ` [PATCH v1 RESEND 1/2] dt-bindings: gpu: mali-bifrost: Document nvmem for speedbin support AngeloGioacchino Del Regno
2023-03-27 7:30 ` Krzysztof Kozlowski
2023-03-23 9:08 ` [PATCH v1 RESEND 2/2] drm/panfrost: Add basic support for speed binning AngeloGioacchino Del Regno
2023-03-31 8:11 ` AngeloGioacchino Del Regno
2023-03-31 8:49 ` Boris Brezillon
2023-03-31 8:57 ` AngeloGioacchino Del Regno
2023-03-31 9:29 ` Boris Brezillon
2023-03-31 9:46 ` Boris Brezillon [this message]
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