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-rw-r--r--Documentation/gpu/vkms.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst
index 7396447b5e58..9f76918bb1d1 100644
--- a/Documentation/gpu/vkms.rst
+++ b/Documentation/gpu/vkms.rst
@@ -94,6 +94,10 @@ Continue by creating one or more CRTCs::
sudo mkdir /config/vkms/my-vkms/crtcs/crtc0
+CRTCs have 1 configurable attribute:
+
+- writeback: Enable or disable writeback connector support by writing 1 or 0
+
Once you are done configuring the VKMS instance, enable it::
echo "1" | sudo tee /config/vkms/my-vkms/enabled