u-boot: Update patches for RPi4ag/rpi4-uboot-update

After a review in upstream, some of the patches were modified. Most
notable changes:
1. use directly the dtb passed by the firmware and make sure uboot
doesn't tweak memory/reg
2. remove known unimplemented support (usb, eth etc.)
3. drop patches that are not needed anymore with the new firmware update
(for example 0012-bcm283x-mbox-Correctly-wait-for-space-to-send.patch)

Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>

1 files changed, 35 insertions, 0 deletions

diff --git a/recipes-bsp/u-boot/u-boot-2019.07/0004-rpi-Add-entry-for-Raspberry-Pi-4-model-B.patch b/recipes-bsp/u-boot/u-boot-2019.07/0004-rpi-Add-entry-for-Raspberry-Pi-4-model-B.patch
new file mode 100644
index 0000000..3eb5b33
--- /dev/null
+++ b/recipes-bsp/u-boot/u-boot-2019.07/0004-rpi-Add-entry-for-Raspberry-Pi-4-model-B.patch
@@ -0,0 +1,35 @@
+From 33adefd1a3a8ad644b0f38258723c17672029cfa Mon Sep 17 00:00:00 2001
+From: Andrei Gherzan <andrei@balena.io>
+Date: Wed, 17 Jul 2019 15:34:18 +0100
+Subject: [PATCH 4/7] rpi: Add entry for Raspberry Pi 4 model B
+
+The Raspebrry Pi 4 uses the new revision code scheme as documented by
+the foundation[1]. This change adds an entry for this board as well.
+
+[1] https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md
+
+Signed-off-by: Andrei Gherzan <andrei@balena.io>
+Upstream-status: Pending
+---
+ board/raspberrypi/rpi/rpi.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
+index 617c892dde..92c6534da6 100644
+--- a/board/raspberrypi/rpi/rpi.c
++++ b/board/raspberrypi/rpi/rpi.c
+@@ -148,6 +148,11 @@ static const struct rpi_model rpi_models_new_scheme[] = {
+                DTB_DIR "bcm2837-rpi-cm3.dtb",
+                false,
+        },
++       [0x11] = {
++               "4 Model B",
++               DTB_DIR "bcm2838-rpi-4-b.dtb",
++               true,
++       },
+ };
+ 
+ static const struct rpi_model rpi_models_old_scheme[] = {
+-- 
+2.22.0
+