From 8299d1f057439f94c6a4412e2e5c5082b82a30c9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Sat, 21 Aug 2021 10:54:34 +0200 Subject: bcm27xx: add kernel 5.10 support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 --- ...4-A-present-but-empty-dmas-disables-audio.patch | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 target/linux/bcm27xx/patches-5.10/950-0346-drm-vc4-A-present-but-empty-dmas-disables-audio.patch (limited to 'target/linux/bcm27xx/patches-5.10/950-0346-drm-vc4-A-present-but-empty-dmas-disables-audio.patch') diff --git a/target/linux/bcm27xx/patches-5.10/950-0346-drm-vc4-A-present-but-empty-dmas-disables-audio.patch b/target/linux/bcm27xx/patches-5.10/950-0346-drm-vc4-A-present-but-empty-dmas-disables-audio.patch new file mode 100644 index 0000000000..9e32fc4b4c --- /dev/null +++ b/target/linux/bcm27xx/patches-5.10/950-0346-drm-vc4-A-present-but-empty-dmas-disables-audio.patch @@ -0,0 +1,33 @@ +From 4de61df3c777ea6265d03be98b315c8644003ceb Mon Sep 17 00:00:00 2001 +From: Phil Elwell +Date: Wed, 31 Jul 2019 17:36:34 +0100 +Subject: [PATCH] drm/vc4: A present but empty dmas disables audio + +Overlays are unable to remove properties in the base DTB, but they +can overwrite them. Allow a present but empty 'dmas' property +to also disable the HDMI audio interface. + +See: https://github.com/raspberrypi/linux/issues/2489 + +Signed-off-by: Phil Elwell +--- + drivers/gpu/drm/vc4/vc4_hdmi.c | 6 ++++-- + 1 file changed, 4 insertions(+), 2 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_hdmi.c ++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c +@@ -1330,10 +1330,12 @@ static int vc4_hdmi_audio_init(struct vc + const __be32 *addr; + int index; + int ret; ++ int len; + +- if (!of_find_property(dev->of_node, "dmas", NULL)) { ++ if (!of_find_property(dev->of_node, "dmas", &len) || ++ len == 0) { + dev_warn(dev, +- "'dmas' DT property is missing, no HDMI audio\n"); ++ "'dmas' DT property is missing or empty, no HDMI audio\n"); + return 0; + } + -- cgit v1.2.3