diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0617-drm-vc4-Fixup-for-firmware-KMS.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0617-drm-vc4-Fixup-for-firmware-KMS.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0617-drm-vc4-Fixup-for-firmware-KMS.patch b/target/linux/bcm27xx/patches-5.4/950-0617-drm-vc4-Fixup-for-firmware-KMS.patch new file mode 100644 index 0000000000..62080bffec --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0617-drm-vc4-Fixup-for-firmware-KMS.patch @@ -0,0 +1,36 @@ +From 3c10a82ae5ce60ee8b4dbd1d1f8436efaa4593c3 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Mon, 30 Mar 2020 12:52:26 +0100 +Subject: [PATCH] drm/vc4: Fixup for firmware KMS + +Fix up "drm/vc4: Kick the core clock up during a mode change" for +firmware KMS mode where we don't have the HVS or core clock +configured. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + drivers/gpu/drm/vc4/vc4_kms.c | 6 ++++-- + 1 file changed, 4 insertions(+), 2 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_kms.c +@@ -239,7 +239,8 @@ vc4_atomic_complete_commit(struct drm_at + vc4_hvs_mask_underrun(dev, vc4_crtc_state->assigned_channel); + } + +- clk_set_rate(hvs->core_clk, 500000000); ++ if (!vc4->firmware_kms) ++ clk_set_rate(hvs->core_clk, 500000000); + + drm_atomic_helper_wait_for_fences(dev, state, false); + +@@ -266,7 +267,8 @@ vc4_atomic_complete_commit(struct drm_at + + drm_atomic_helper_commit_cleanup_done(state); + +- clk_set_rate(hvs->core_clk, 200000000); ++ if (!vc4->firmware_kms) ++ clk_set_rate(hvs->core_clk, 200000000); + + drm_atomic_state_put(state); + |