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, 31 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.10/950-0456-drm-vc4-hdmi-Update-the-CEC-clock-divider-on-HSM-rat.patch b/target/linux/bcm27xx/patches-5.10/950-0456-drm-vc4-hdmi-Update-the-CEC-clock-divider-on-HSM-rat.patch
new file mode 100644
index 0000000000..8c64066094
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0456-drm-vc4-hdmi-Update-the-CEC-clock-divider-on-HSM-rat.patch
@@ -0,0 +1,31 @@
+From beadd8dfb16c626c2261fc6f8aab935cd7412603 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 11 Jan 2021 15:23:01 +0100
+Subject: [PATCH] drm/vc4: hdmi: Update the CEC clock divider on HSM
+ rate change
+
+As part of the enable sequence we might change the HSM clock rate if the
+pixel rate is different than the one we were already dealing with.
+
+On the BCM2835 however, the CEC clock derives from the HSM clock so any
+rate change will need to be reflected in the CEC clock divider to output
+40kHz.
+
+Fixes: cd4cb49dc5bb ("drm/vc4: hdmi: Adjust HSM clock rate depending on pixel rate")
+Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -801,6 +801,8 @@ static void vc4_hdmi_encoder_pre_crtc_co
+ 
+ 	vc4_hdmi_cec_update_clk_div(vc4_hdmi);
+ 
++	vc4_hdmi_cec_update_clk_div(vc4_hdmi);
++
+ 	/*
+ 	 * FIXME: When the pixel freq is 594MHz (4k60), this needs to be setup
+ 	 * at 300MHz.