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, 117 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0431-of-Factor-out-addr-size-cells-parsing.patch b/target/linux/bcm27xx/patches-5.4/950-0431-of-Factor-out-addr-size-cells-parsing.patch
new file mode 100644
index 0000000000..045ee9827f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0431-of-Factor-out-addr-size-cells-parsing.patch
@@ -0,0 +1,117 @@
+From 839aeedc908eb729b9014e7d1d38e109778a52d2 Mon Sep 17 00:00:00 2001
+From: Robin Murphy <robin.murphy@arm.com>
+Date: Tue, 2 Jul 2019 18:42:39 +0100
+Subject: [PATCH] of: Factor out #{addr,size}-cells parsing
+
+In some cases such as PCI host controllers, we may have a "parent bus"
+which is an OF leaf node, but still need to correctly parse ranges from
+the point of view of that bus. For that, factor out variants of the
+"#addr-cells" and "#size-cells" parsers which do not assume they have a
+device node and thus immediately traverse upwards before reading the
+relevant property.
+
+Signed-off-by: Robin Murphy <robin.murphy@arm.com>
+[robh: don't make of_bus_n_{addr,size}_cells() public]
+Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
+Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+Signed-off-by: Rob Herring <robh@kernel.org>
+
+(cherry picked from commit b68ac8dc22ebbf003e26e44bf4dd3030c076df5a)
+---
+ drivers/of/address.c    |  2 ++
+ drivers/of/base.c       | 32 ++++++++++++++++++++++----------
+ drivers/of/of_private.h | 14 ++++++++++++++
+ 3 files changed, 38 insertions(+), 10 deletions(-)
+
+--- a/drivers/of/address.c
++++ b/drivers/of/address.c
+@@ -14,6 +14,8 @@
+ #include <linux/slab.h>
+ #include <linux/string.h>
+ 
++#include "of_private.h"
++
+ /* Max address size we deal with */
+ #define OF_MAX_ADDR_CELLS	4
+ #define OF_CHECK_ADDR_COUNT(na)	((na) > 0 && (na) <= OF_MAX_ADDR_CELLS)
+--- a/drivers/of/base.c
++++ b/drivers/of/base.c
+@@ -86,34 +86,46 @@ static bool __of_node_is_type(const stru
+ 	return np && match && type && !strcmp(match, type);
+ }
+ 
+-int of_n_addr_cells(struct device_node *np)
++int of_bus_n_addr_cells(struct device_node *np)
+ {
+ 	u32 cells;
+ 
+-	do {
+-		if (np->parent)
+-			np = np->parent;
++	for (; np; np = np->parent)
+ 		if (!of_property_read_u32(np, "#address-cells", &cells))
+ 			return cells;
+-	} while (np->parent);
++
+ 	/* No #address-cells property for the root node */
+ 	return OF_ROOT_NODE_ADDR_CELLS_DEFAULT;
+ }
++
++int of_n_addr_cells(struct device_node *np)
++{
++	if (np->parent)
++		np = np->parent;
++
++	return of_bus_n_addr_cells(np);
++}
+ EXPORT_SYMBOL(of_n_addr_cells);
+ 
+-int of_n_size_cells(struct device_node *np)
++int of_bus_n_size_cells(struct device_node *np)
+ {
+ 	u32 cells;
+ 
+-	do {
+-		if (np->parent)
+-			np = np->parent;
++	for (; np; np = np->parent)
+ 		if (!of_property_read_u32(np, "#size-cells", &cells))
+ 			return cells;
+-	} while (np->parent);
++
+ 	/* No #size-cells property for the root node */
+ 	return OF_ROOT_NODE_SIZE_CELLS_DEFAULT;
+ }
++
++int of_n_size_cells(struct device_node *np)
++{
++	if (np->parent)
++		np = np->parent;
++
++	return of_bus_n_size_cells(np);
++}
+ EXPORT_SYMBOL(of_n_size_cells);
+ 
+ #ifdef CONFIG_NUMA
+--- a/drivers/of/of_private.h
++++ b/drivers/of/of_private.h
+@@ -158,4 +158,18 @@ extern void __of_sysfs_remove_bin_file(s
+ #define for_each_transaction_entry_reverse(_oft, _te) \
+ 	list_for_each_entry_reverse(_te, &(_oft)->te_list, node)
+ 
++extern int of_bus_n_addr_cells(struct device_node *np);
++extern int of_bus_n_size_cells(struct device_node *np);
++
++#ifdef CONFIG_OF_ADDRESS
++extern int of_dma_get_range(struct device_node *np, u64 *dma_addr,
++			    u64 *paddr, u64 *size);
++#else
++static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr,
++				   u64 *paddr, u64 *size)
++{
++	return -ENODEV;
++}
++#endif
++
+ #endif /* _LINUX_OF_PRIVATE_H */