openwrt/target/linux/bcm27xx/patches-5.10/950-0652-drm-vc4-Fix-pixel-wrap-issue-with-DVP-teardown.patch
Hauke Mehrtens 9703a2adcc kernel: Refresh on 5.10.138
Refresh all patches on top of kernel 5.10.138.

The following patches were applied upstream:
 bcm27xx/patches-5.10/950-0311-drm-vc4-Adopt-the-dma-configuration-from-the-HVS-or-.patch
 bcm27xx/patches-5.10/950-0317-vc4_hdmi-Remove-firmware-logic-for-MAI-threshold-set.patch
 bcm27xx/patches-5.10/950-0346-drm-vc4-A-present-but-empty-dmas-disables-audio.patch
 bcm27xx/patches-5.10/950-0354-drm-vc4-Add-the-2711-HVS-as-a-suitable-DMA-node.patch
 bcm27xx/patches-5.10/950-0413-drm-vc4-hdmi-Don-t-access-the-connector-state-in-res.patch
 bcm27xx/patches-5.10/950-0505-vc4-drm-Avoid-full-hdmi-audio-fifo-writes.patch
 bcm27xx/patches-5.10/950-0512-vc4-drm-vc4_plane-Remove-subpixel-positioning-check.patch
 bcm27xx/patches-5.10/950-0560-drm-vc4-drv-Remove-the-DSI-pointer-in-vc4_drv.patch
 bcm27xx/patches-5.10/950-0561-drm-vc4-dsi-Use-snprintf-for-the-PHY-clocks-instead-.patch
 bcm27xx/patches-5.10/950-0562-drm-vc4-dsi-Introduce-a-variant-structure.patch
 bcm27xx/patches-5.10/950-0565-drm-vc4-Correct-pixel-order-for-DSI0.patch
 bcm27xx/patches-5.10/950-0566-drm-vc4-Register-dsi0-as-the-correct-vc4-encoder-typ.patch
 bcm27xx/patches-5.10/950-0567-drm-vc4-Fix-dsi0-interrupt-support.patch
 bcm27xx/patches-5.10/950-0568-drm-vc4-Add-correct-stop-condition-to-vc4_dsi_encode.patch
 bcm27xx/patches-5.10/950-0647-drm-vc4-Fix-timings-for-interlaced-modes.patch
 bcm27xx/patches-5.10/950-0695-drm-vc4-Fix-margin-calculations-for-the-right-bottom.patch

Upstream sets the pixel clock to 340MHz now, do not set it to 600MHz any more.
 bcm27xx/patches-5.10/950-0576-drm-vc4-hdmi-Raise-the-maximum-clock-rate.patch

Fixes: 89956c6532 ("kernel: bump 5.10 to 5.10.138")
Fixes: 4209c33ae2 ("kernel: bump 5.10 to 5.10.137")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2022-08-28 16:56:01 +02:00

63 lines
2.1 KiB
Diff

From 4ec54ed688271966193b572ba5b150c6a4d270fc Mon Sep 17 00:00:00 2001
From: Tim Gover <tim.gover@raspberrypi.com>
Date: Thu, 24 Jun 2021 17:58:05 +0100
Subject: [PATCH] drm: vc4: Fix pixel-wrap issue with DVP teardown
Adjust the DVP enable/disable sequence to avoid a pixel getting stuck
in an internal, non resettable FIFO within PixelValve when changing
HDMI resolution.
The blank pixels features of the DVP can prevent signals back to
pixelvalve causing it to not clear the FIFO. Adjust the ordering
and timing of operations to ensure the clear signal makes it through to
pixelvalve.
Signed-off-by: Tim Gover <tim.gover@raspberrypi.com>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -613,12 +613,12 @@ static void vc4_hdmi_encoder_post_crtc_d
HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 0);
- HDMI_WRITE(HDMI_VID_CTL, HDMI_READ(HDMI_VID_CTL) |
- VC4_HD_VID_CTL_CLRRGB | VC4_HD_VID_CTL_CLRSYNC);
+ HDMI_WRITE(HDMI_VID_CTL, HDMI_READ(HDMI_VID_CTL) | VC4_HD_VID_CTL_CLRRGB);
- HDMI_WRITE(HDMI_VID_CTL,
- HDMI_READ(HDMI_VID_CTL) | VC4_HD_VID_CTL_BLANKPIX);
+ mdelay(1);
+ HDMI_WRITE(HDMI_VID_CTL,
+ HDMI_READ(HDMI_VID_CTL) & ~VC4_HD_VID_CTL_ENABLE);
vc4_hdmi_disable_scrambling(encoder);
}
@@ -628,12 +628,12 @@ static void vc4_hdmi_encoder_post_crtc_p
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
int ret;
+ HDMI_WRITE(HDMI_VID_CTL,
+ HDMI_READ(HDMI_VID_CTL) | VC4_HD_VID_CTL_BLANKPIX);
+
if (vc4_hdmi->variant->phy_disable)
vc4_hdmi->variant->phy_disable(vc4_hdmi);
- HDMI_WRITE(HDMI_VID_CTL,
- HDMI_READ(HDMI_VID_CTL) & ~VC4_HD_VID_CTL_ENABLE);
-
clk_disable_unprepare(vc4_hdmi->pixel_bvb_clock);
if (vc4_hdmi->bvb_req)
clk_request_done(vc4_hdmi->bvb_req);
@@ -1013,6 +1013,7 @@ static void vc4_hdmi_encoder_post_crtc_e
HDMI_WRITE(HDMI_VID_CTL,
VC4_HD_VID_CTL_ENABLE |
+ VC4_HD_VID_CTL_CLRRGB |
VC4_HD_VID_CTL_UNDERFLOW_ENABLE |
VC4_HD_VID_CTL_FRAME_COUNTER_RESET |
(vsync_pos ? 0 : VC4_HD_VID_CTL_VSYNC_LOW) |