From: Nicolas Boichat <drinkcat@chromium.org>
To: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org,
Tomeu Vizoso <tomeu.vizoso@collabora.com>,
David Airlie <airlied@linux.ie>,
linux-kernel@vger.kernel.org, Liam Girdwood <lgirdwood@gmail.com>,
dri-devel@lists.freedesktop.org,
Steven Price <steven.price@arm.com>,
Mark Brown <broonie@kernel.org>,
linux-mediatek@lists.infradead.org,
Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>,
hsinyi@chromium.org, Matthias Brugger <matthias.bgg@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 3/7] drm/panfrost: Improve error reporting in panfrost_gpu_power_on
Date: Wed, 8 Jan 2020 13:23:33 +0800 [thread overview]
Message-ID: <20200108052337.65916-4-drinkcat@chromium.org> (raw)
In-Reply-To: <20200108052337.65916-1-drinkcat@chromium.org>
It is useful to know which component cannot be powered on.
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
---
Was useful when trying to probe bifrost GPU, to understand what
issue we are facing.
---
drivers/gpu/drm/panfrost/panfrost_gpu.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c
index 8822ec13a0d619f..ba02bbfcf28c011 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gpu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c
@@ -308,21 +308,26 @@ void panfrost_gpu_power_on(struct panfrost_device *pfdev)
gpu_write(pfdev, L2_PWRON_LO, pfdev->features.l2_present);
ret = readl_relaxed_poll_timeout(pfdev->iomem + L2_READY_LO,
val, val == pfdev->features.l2_present, 100, 1000);
+ if (ret)
+ dev_err(pfdev->dev, "error powering up gpu L2");
gpu_write(pfdev, STACK_PWRON_LO, pfdev->features.stack_present);
- ret |= readl_relaxed_poll_timeout(pfdev->iomem + STACK_READY_LO,
+ ret = readl_relaxed_poll_timeout(pfdev->iomem + STACK_READY_LO,
val, val == pfdev->features.stack_present, 100, 1000);
+ if (ret)
+ dev_err(pfdev->dev, "error powering up gpu stack");
gpu_write(pfdev, SHADER_PWRON_LO, pfdev->features.shader_present);
- ret |= readl_relaxed_poll_timeout(pfdev->iomem + SHADER_READY_LO,
+ ret = readl_relaxed_poll_timeout(pfdev->iomem + SHADER_READY_LO,
val, val == pfdev->features.shader_present, 100, 1000);
+ if (ret)
+ dev_err(pfdev->dev, "error powering up gpu shader");
gpu_write(pfdev, TILER_PWRON_LO, pfdev->features.tiler_present);
- ret |= readl_relaxed_poll_timeout(pfdev->iomem + TILER_READY_LO,
+ ret = readl_relaxed_poll_timeout(pfdev->iomem + TILER_READY_LO,
val, val == pfdev->features.tiler_present, 100, 1000);
-
if (ret)
- dev_err(pfdev->dev, "error powering up gpu");
+ dev_err(pfdev->dev, "error powering up gpu tiler");
}
void panfrost_gpu_power_off(struct panfrost_device *pfdev)
--
2.24.1.735.g03f4e72817-goog
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next prev parent reply other threads:[~2020-01-08 5:24 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-08 5:23 [PATCH v2 0/7] Add dts for mt8183 GPU (and misc panfrost patches) Nicolas Boichat
2020-01-08 5:23 ` [PATCH v2 1/7] dt-bindings: gpu: mali-bifrost: Add Mediatek MT8183 Nicolas Boichat
2020-01-08 5:23 ` [PATCH v2 2/7] arm64: dts: mt8183: Add node for the Mali GPU Nicolas Boichat
2020-01-08 5:23 ` Nicolas Boichat [this message]
2020-01-09 12:03 ` [PATCH v2 3/7] drm/panfrost: Improve error reporting in panfrost_gpu_power_on Steven Price
2020-01-08 5:23 ` [PATCH v2 4/7] drm/panfrost: Add support for a second regulator for the GPU Nicolas Boichat
2020-01-08 13:23 ` Mark Brown
2020-01-08 22:52 ` Nicolas Boichat
2020-01-09 14:14 ` Steven Price
2020-01-09 16:28 ` Mark Brown
2020-01-09 16:53 ` Steven Price
2020-01-09 19:49 ` Mark Brown
2020-01-10 11:30 ` Steven Price
2020-01-14 7:21 ` Nicolas Boichat
2020-01-09 16:56 ` Rob Herring
2020-01-10 11:39 ` Steven Price
2020-01-08 5:23 ` [PATCH v2 5/7] drm/panfrost: Add support for multiple power domain support Nicolas Boichat
2020-01-09 14:08 ` Steven Price
2020-01-10 1:53 ` Nicolas Boichat
2020-01-27 7:55 ` Ulf Hansson
2020-02-07 2:04 ` Nicolas Boichat
2020-02-07 2:04 ` Nicolas Boichat
2020-01-08 5:23 ` [PATCH v2 6/7, RFC] drm/panfrost: Add bifrost compatible string Nicolas Boichat
2020-01-09 14:11 ` Steven Price
2020-01-08 5:23 ` [PATCH v2 7/7, RFC]: drm/panfrost: devfreq: Add support for 2 regulators Nicolas Boichat
2020-01-08 20:09 ` Rob Herring
2020-01-08 22:44 ` Nicolas Boichat
2020-01-08 12:56 ` [PATCH v2 0/7] Add dts for mt8183 GPU (and misc panfrost patches) Alyssa Rosenzweig
2020-01-09 9:08 ` Nicolas Boichat
2020-01-09 12:01 ` Steven Price
2020-01-09 13:10 ` Robin Murphy
2020-01-09 13:29 ` Steven Price
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