bcm53xx: add testing support for kernel 5.10

It still requires fixing PCIe support:
[    6.644699] pcie_iproc_bcma bcma0:7: host bridge /axi@18000000/pcie@12000 ranges:
[    6.652217] pcie_iproc_bcma bcma0:7:   No bus range found for /axi@18000000/pcie@12000, using [bus 00-ff]
[    6.661833] OF: /axi@18000000/pcie@12000: Missing device_type
[    6.667622] pcie_iproc_bcma: probe of bcma0:7 failed with error -12
[    6.673985] pcie_iproc_bcma bcma0:8: host bridge /axi@18000000/pcie@13000 ranges:
[    6.681514] pcie_iproc_bcma bcma0:8:   No bus range found for /axi@18000000/pcie@13000, using [bus 00-ff]
[    6.691137] pcie_iproc_bcma: probe of bcma0:8 failed with error -12
[    6.697522] pcie_iproc_bcma bcma0:9: host bridge /axi@18000000/pcie@14000 ranges:
[    6.705048] pcie_iproc_bcma bcma0:9:   No bus range found for /axi@18000000/pcie@14000, using [bus 00-ff]
[    6.714669] pcie_iproc_bcma: probe of bcma0:9 failed with error -12

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 60 insertions, 0 deletions

diff --git a/target/linux/bcm53xx/patches-5.10/031-v5.13-0003-ARM-dts-BCM5301X-Fix-Linksys-EA9500-partitions.patch b/target/linux/bcm53xx/patches-5.10/031-v5.13-0003-ARM-dts-BCM5301X-Fix-Linksys-EA9500-partitions.patch
new file mode 100644
index 0000000000..d52f46f979
--- /dev/null
+++ b/target/linux/bcm53xx/patches-5.10/031-v5.13-0003-ARM-dts-BCM5301X-Fix-Linksys-EA9500-partitions.patch
@@ -0,0 +1,60 @@
+From 1d3352aeed164ef73f05cf80ca001f11d2f3312d Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Mon, 29 Mar 2021 07:54:30 +0200
+Subject: [PATCH] ARM: dts: BCM5301X: Fix Linksys EA9500 partitions
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Partitions are basically fixed indeed but firmware ones don't have
+hardcoded function ("firmware" vs "failsafe"). Actual function depends
+on bootloader configuration. Use a proper binding for that.
+
+While at it fix numbers formatting to avoid:
+arch/arm/boot/dts/bcm47094-linksys-panamera.dt.yaml: partitions: 'partition@1F00000' does not match any of the regexes: '^partition@[0-9a-f]+$', 'pinctrl-[0-9]+'
+        From schema: Documentation/devicetree/bindings/mtd/partitions/linksys,ns-partitions.yaml
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ arch/arm/boot/dts/bcm47094-linksys-panamera.dts | 16 +++++++---------
+ 1 file changed, 7 insertions(+), 9 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm47094-linksys-panamera.dts
++++ b/arch/arm/boot/dts/bcm47094-linksys-panamera.dts
+@@ -279,7 +279,7 @@
+ 
+ &nandcs {
+ 	partitions {
+-		compatible = "fixed-partitions";
++		compatible = "linksys,ns-partitions";
+ 		#address-cells = <1>;
+ 		#size-cells = <1>;
+ 
+@@ -300,20 +300,18 @@
+ 		};
+ 
+ 		partition@200000 {
+-			label = "firmware";
+-			reg = <0x0200000 0x01D00000>;
+-			compatible = "brcm,trx";
++			reg = <0x0200000 0x01d00000>;
++			compatible = "linksys,ns-firmware", "brcm,trx";
+ 		};
+ 
+-		partition@1F00000 {
+-			label = "failsafe";
+-			reg = <0x01F00000 0x01D00000>;
+-			read-only;
++		partition@1f00000 {
++			reg = <0x01f00000 0x01d00000>;
++			compatible = "linksys,ns-firmware", "brcm,trx";
+ 		};
+ 
+ 		partition@5200000 {
+ 			label = "system";
+-			reg = <0x05200000 0x02E00000>;
++			reg = <0x05200000 0x02e00000>;
+ 		};
+ 	};
+ };