bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

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

1 files changed, 40 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0432-of-address-Translate-dma-ranges-for-parent-nodes-mis.patch b/target/linux/bcm27xx/patches-5.4/950-0432-of-address-Translate-dma-ranges-for-parent-nodes-mis.patch
new file mode 100644
index 0000000000..28d1987a9c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0432-of-address-Translate-dma-ranges-for-parent-nodes-mis.patch
@@ -0,0 +1,40 @@
+From 39f5d9e883393e32938eac45b564f74afde8a942 Mon Sep 17 00:00:00 2001
+From: Rob Herring <robh@kernel.org>
+Date: Wed, 4 Sep 2019 11:43:30 +0100
+Subject: [PATCH] of/address: Translate 'dma-ranges' for parent nodes
+ missing 'dma-ranges'
+
+commit 81db12ee15cb83926e290a8a3654a2dfebc80935 upstream.
+
+'dma-ranges' frequently exists without parent nodes having 'dma-ranges'.
+While this is an error for 'ranges', this is fine because DMA capable
+devices always have a translatable DMA address. Also, with no
+'dma-ranges' at all, the assumption is that DMA addresses are 1:1 with
+no restrictions unless perhaps the device itself has implicit
+restrictions.
+
+Cc: Robin Murphy <robin.murphy@arm.com>
+Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+Signed-off-by: Rob Herring <robh@kernel.org>
+---
+ drivers/of/address.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+--- a/drivers/of/address.c
++++ b/drivers/of/address.c
+@@ -519,9 +519,13 @@ static int of_translate_one(struct devic
+ 	 *
+ 	 * As far as we know, this damage only exists on Apple machines, so
+ 	 * This code is only enabled on powerpc. --gcl
++	 *
++	 * This quirk also applies for 'dma-ranges' which frequently exist in
++	 * child nodes without 'dma-ranges' in the parent nodes. --RobH
+ 	 */
+ 	ranges = of_get_property(parent, rprop, &rlen);
+-	if (ranges == NULL && !of_empty_ranges_quirk(parent)) {
++	if (ranges == NULL && !of_empty_ranges_quirk(parent) &&
++	    strcmp(rprop, "dma-ranges")) {
+ 		pr_debug("no ranges; cannot translate\n");
+ 		return 1;
+ 	}