bcm27xx: update to latest patches from RPi foundation

Also removes random module and switches to new bcm2711 thermal driver.
Boot tested on RPi 4B v1.1 4G.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 66 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0582-drm-vc4-hdmi-Add-reset-callback.patch b/target/linux/bcm27xx/patches-5.4/950-0582-drm-vc4-hdmi-Add-reset-callback.patch
new file mode 100644
index 0000000000..53dd3e4405
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0582-drm-vc4-hdmi-Add-reset-callback.patch
@@ -0,0 +1,66 @@
+From 3cf4a365b833d7a2e7622ad5569b9d54aebbe593 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 19 Dec 2019 16:25:26 +0100
+Subject: [PATCH] drm/vc4: hdmi: Add reset callback
+
+The BCM2711 and BCM283x HDMI controllers use a slightly different reset
+sequence, so let's add a callback to reset the controller.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 17 ++++++++++++-----
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  3 +++
+ 2 files changed, 15 insertions(+), 5 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -68,6 +68,15 @@ static int vc4_hdmi_debugfs_regs(struct
+ 	return 0;
+ }
+ 
++static void vc4_hdmi_reset(struct vc4_hdmi *vc4_hdmi)
++{
++	HDMI_WRITE(HDMI_SW_RESET_CONTROL,
++		   VC4_HDMI_SW_RESET_HDMI |
++		   VC4_HDMI_SW_RESET_FORMAT_DETECT);
++
++	HDMI_WRITE(HDMI_SW_RESET_CONTROL, 0);
++}
++
+ static enum drm_connector_status
+ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force)
+ {
+@@ -372,11 +381,8 @@ static void vc4_hdmi_encoder_enable(stru
+ 		return;
+ 	}
+ 
+-	HDMI_WRITE(HDMI_SW_RESET_CONTROL,
+-		   VC4_HDMI_SW_RESET_HDMI |
+-		   VC4_HDMI_SW_RESET_FORMAT_DETECT);
+-
+-	HDMI_WRITE(HDMI_SW_RESET_CONTROL, 0);
++	if (vc4_hdmi->variant->reset)
++		vc4_hdmi->variant->reset(vc4_hdmi);
+ 
+ 	/* PHY should be in reset, like
+ 	 * vc4_hdmi_encoder_disable() does.
+@@ -1421,6 +1427,7 @@ static const struct vc4_hdmi_variant bcm
+ 	.num_registers		= ARRAY_SIZE(vc4_hdmi_fields),
+ 
+ 	.init_resources		= vc4_hdmi_init_resources,
++	.reset			= vc4_hdmi_reset,
+ };
+ 
+ static const struct of_device_id vc4_hdmi_dt_match[] = {
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -35,6 +35,9 @@ struct vc4_hdmi_variant {
+ 	 * clocks, etc) for that variant.
+ 	 */
+ 	int (*init_resources)(struct vc4_hdmi *vc4_hdmi);
++
++	/* Callback to reset the HDMI block */
++	void (*reset)(struct vc4_hdmi *vc4_hdmi);
+ };
+ 
+ /* HDMI audio information */