From 0f6d04457a64f2393b05f662dc8d381ea1963c66 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Mon, 16 Mar 2020 20:41:03 +0100 Subject: bcm27xx: sync 5.4 patches with RPi Foundation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Álvaro Fernández Rojas --- ...950-0263-drm-vc4-Limit-fkms-to-modes-85Hz.patch | 26 ++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 target/linux/bcm27xx/patches-5.4/950-0263-drm-vc4-Limit-fkms-to-modes-85Hz.patch (limited to 'target/linux/bcm27xx/patches-5.4/950-0263-drm-vc4-Limit-fkms-to-modes-85Hz.patch') diff --git a/target/linux/bcm27xx/patches-5.4/950-0263-drm-vc4-Limit-fkms-to-modes-85Hz.patch b/target/linux/bcm27xx/patches-5.4/950-0263-drm-vc4-Limit-fkms-to-modes-85Hz.patch new file mode 100644 index 0000000000..128ac5d54b --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0263-drm-vc4-Limit-fkms-to-modes-85Hz.patch @@ -0,0 +1,26 @@ +From 9f9d67a11cfd6318d2bd1321090c0950242cfa25 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson +Date: Tue, 18 Jun 2019 21:37:45 +0100 +Subject: [PATCH] drm/vc4: Limit fkms to modes <= 85Hz + +Selecting 1080p100 and 120 has very limited gain, but don't want +to block VGA85 and similar. + +Signed-off-by: Dave Stevenson +--- + drivers/gpu/drm/vc4/vc4_firmware_kms.c | 4 ++++ + 1 file changed, 4 insertions(+) + +--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c +@@ -823,6 +823,10 @@ vc4_crtc_mode_valid(struct drm_crtc *crt + return MODE_NO_DBLESCAN; + } + ++ /* Disable refresh rates > 85Hz as limited gain from them */ ++ if (drm_mode_vrefresh(mode) > 85) ++ return MODE_BAD_VVALUE; ++ + /* Limit the pixel clock based on the HDMI clock limits from the + * firmware + */ -- cgit v1.2.3