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Date: Thu, 7 Jan 2021 16:26:52 +0800 From: Nicolas Boichat <drinkcat@...omium.org> To: Rob Herring <robh@...nel.org>, Steven Price <steven.price@....com>, Alyssa Rosenzweig <alyssa.rosenzweig@...labora.com> Cc: hoegsberg@...omium.org, fshao@...omium.org, hsinyi@...omium.org, boris.brezillon@...labora.com, Nicolas Boichat <drinkcat@...omium.org>, Daniel Vetter <daniel@...ll.ch>, David Airlie <airlied@...ux.ie>, Tomeu Vizoso <tomeu.vizoso@...labora.com>, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org Subject: [PATCH v7 3/4] drm/panfrost: devfreq: Disable devfreq when num_supplies > 1 GPUs with more than a single regulator (e.g. G72 on MT8183) will require platform-specific handling, disable devfreq for now. Signed-off-by: Nicolas Boichat <drinkcat@...omium.org> --- Changes in v7: - Fix GPU ID in commit message Changes in v6: - New change drivers/gpu/drm/panfrost/panfrost_devfreq.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c index f44d28fad085..1f49043aae73 100644 --- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c +++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c @@ -92,6 +92,15 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev) struct thermal_cooling_device *cooling; struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq; + if (pfdev->comp->num_supplies > 1) { + /* + * GPUs with more than 1 supply require platform-specific handling: + * continue without devfreq + */ + DRM_DEV_ERROR(dev, "More than 1 supply is not supported yet\n"); + return 0; + } + opp_table = dev_pm_opp_set_regulators(dev, pfdev->comp->supply_names, pfdev->comp->num_supplies); if (IS_ERR(opp_table)) { -- 2.29.2.729.g45daf8777d-goog
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