From: Brian Masney <masneyb@onstation.org>
To: robdclark@gmail.com, sean@poorly.run, robh+dt@kernel.org
Cc: airlied@linux.ie, daniel@ffwll.ch, jcrouse@codeaurora.org,
dianders@chromium.org, linux-arm-msm@vger.kernel.org,
dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org,
linux-kernel@vger.kernel.org, mark.rutland@arm.com,
devicetree@vger.kernel.org
Subject: [PATCH v2 3/4] drm/msm/a3xx: set interconnect bandwidth vote
Date: Thu, 21 Nov 2019 20:26:44 -0500 [thread overview]
Message-ID: <20191122012645.7430-4-masneyb@onstation.org> (raw)
In-Reply-To: <20191122012645.7430-1-masneyb@onstation.org>
Set the two interconnect paths for the GPU to maximum speed for now to
work towards getting the GPU working upstream. We can revisit a later
time to optimize this for battery life.
Signed-off-by: Brian Masney <masneyb@onstation.org>
---
drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
index 07ddcc529573..eff0ecd4e81a 100644
--- a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
@@ -504,6 +504,14 @@ struct msm_gpu *a3xx_gpu_init(struct drm_device *dev)
DRM_DEV_ERROR(dev->dev, "No memory protection without IOMMU\n");
}
+ /*
+ * Set the ICC path to maximum speed for now by multiplying the fastest
+ * frequency by the bus width (8). We'll want to scale this later on to
+ * improve battery life.
+ */
+ icc_set_bw(gpu->icc_path, 0, Bps_to_icc(gpu->fast_rate) * 8);
+ icc_set_bw(gpu->ocmem_icc_path, 0, Bps_to_icc(gpu->fast_rate) * 8);
+
return gpu;
fail:
--
2.21.0
next prev parent reply other threads:[~2019-11-22 1:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-22 1:26 [PATCH v2 0/4] drm/msm/gpu: add support for ocmem interconnect Brian Masney
2019-11-22 1:26 ` [PATCH v2 1/4] dt-bindings: drm/msm/gpu: document second interconnect Brian Masney
2019-12-04 19:36 ` Rob Herring
2019-12-12 7:14 ` Bjorn Andersson
2019-11-22 1:26 ` [PATCH v2 2/4] drm/msm/gpu: add support for ocmem interconnect path Brian Masney
2019-12-12 7:12 ` Bjorn Andersson
2019-11-22 1:26 ` Brian Masney [this message]
2019-12-12 7:17 ` [PATCH v2 3/4] drm/msm/a3xx: set interconnect bandwidth vote Bjorn Andersson
2019-11-22 1:26 ` [PATCH v2 4/4] drm/msm/a4xx: " Brian Masney
2019-12-12 7:18 ` Bjorn Andersson
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