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8299d1f057
Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted patches, wireless patches and defconfig patches. bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 4B v1.1 4G bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
46 lines
1.8 KiB
Diff
46 lines
1.8 KiB
Diff
From 33e8e066af31c3af1d18d615f5e8ab5e528e0000 Mon Sep 17 00:00:00 2001
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From: Dom Cobley <popcornmix@gmail.com>
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Date: Wed, 21 Apr 2021 15:15:42 +0100
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Subject: [PATCH] vc4/drm: hdmi: Handle case when bvb clock is null
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Pi2/3 have no bvb clock but want the other clocks to remain enabled here
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See: https://github.com/raspberrypi/linux/issues/4299
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Signed-off-by: Dom Cobley <popcornmix@gmail.com>
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---
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drivers/gpu/drm/vc4/vc4_hdmi.c | 9 ++++++---
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1 file changed, 6 insertions(+), 3 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
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@@ -607,7 +607,8 @@ static void vc4_hdmi_encoder_post_crtc_p
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HDMI_READ(HDMI_VID_CTL) & ~VC4_HD_VID_CTL_ENABLE);
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clk_disable_unprepare(vc4_hdmi->pixel_bvb_clock);
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- clk_request_done(vc4_hdmi->bvb_req);
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+ if (vc4_hdmi->bvb_req)
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+ clk_request_done(vc4_hdmi->bvb_req);
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clk_disable_unprepare(vc4_hdmi->hsm_clock);
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clk_request_done(vc4_hdmi->hsm_req);
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clk_disable_unprepare(vc4_hdmi->pixel_clock);
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@@ -931,7 +932,8 @@ static void vc4_hdmi_encoder_pre_crtc_co
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else
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bvb_rate = 75000000;
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- vc4_hdmi->bvb_req = clk_request_start(vc4_hdmi->pixel_bvb_clock, bvb_rate);
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+ if (vc4_hdmi->pixel_bvb_clock)
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+ vc4_hdmi->bvb_req = clk_request_start(vc4_hdmi->pixel_bvb_clock, bvb_rate);
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if (IS_ERR(vc4_hdmi->bvb_req)) {
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DRM_ERROR("Failed to set pixel bvb clock rate: %ld\n", PTR_ERR(vc4_hdmi->bvb_req));
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clk_request_done(vc4_hdmi->hsm_req);
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@@ -943,7 +945,8 @@ static void vc4_hdmi_encoder_pre_crtc_co
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ret = clk_prepare_enable(vc4_hdmi->pixel_bvb_clock);
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if (ret) {
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DRM_ERROR("Failed to turn on pixel bvb clock: %d\n", ret);
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- clk_request_done(vc4_hdmi->bvb_req);
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+ if (vc4_hdmi->bvb_req)
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+ clk_request_done(vc4_hdmi->bvb_req);
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clk_request_done(vc4_hdmi->hsm_req);
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clk_disable_unprepare(vc4_hdmi->hsm_clock);
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clk_disable_unprepare(vc4_hdmi->pixel_clock);
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