bcm27xx: add kernel 5.10 support

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>

1 files changed, 28 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.10/950-0670-drm-vc4-hdmi-Add-missing-clk_disable_unprepare-on-er.patch b/target/linux/bcm27xx/patches-5.10/950-0670-drm-vc4-hdmi-Add-missing-clk_disable_unprepare-on-er.patch
new file mode 100644
index 0000000000..03590ba735
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0670-drm-vc4-hdmi-Add-missing-clk_disable_unprepare-on-er.patch
@@ -0,0 +1,28 @@
+From 8865bc13c5e22daa653ce4c1c419a6efaa701dac Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 2 Jul 2021 17:44:56 +0200
+Subject: [PATCH] drm/vc4: hdmi: Add missing clk_disable_unprepare on
+ error path
+
+In vc4_hdmi_encoder_pre_crtc_configure, if clk_request_start for the HSM
+clock fails, we don't call clk_disable_unprepare on the pixel clock even
+though it's enabled by now.
+
+Make sure it's there to avoid leaking that reference.
+
+Fixes: cd4cb49dc5bb ("drm/vc4: hdmi: Adjust HSM clock rate depending on pixel rate")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -923,6 +923,7 @@ static void vc4_hdmi_encoder_pre_crtc_co
+ 	vc4_hdmi->hsm_req = clk_request_start(vc4_hdmi->hsm_clock, hsm_rate);
+ 	if (IS_ERR(vc4_hdmi->hsm_req)) {
+ 		DRM_ERROR("Failed to set HSM clock rate: %ld\n", PTR_ERR(vc4_hdmi->hsm_req));
++		clk_disable_unprepare(vc4_hdmi->pixel_clock);
+ 		pm_runtime_put(&vc4_hdmi->pdev->dev);
+ 		return;
+ 	}