bcm53xx: prepare kernel 5.15 support

Tested on Luxul XWR-3150 (boot, NAND, PCIe, switch, Ethernet).

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

1 files changed, 29 insertions, 0 deletions

diff --git a/target/linux/bcm53xx/patches-5.15/030-v5.15-0002-ARM-dts-NSP-enable-DMA-on-bcm988312hr.patch b/target/linux/bcm53xx/patches-5.15/030-v5.15-0002-ARM-dts-NSP-enable-DMA-on-bcm988312hr.patch
new file mode 100644
index 0000000000..d84124d2dd
--- /dev/null
+++ b/target/linux/bcm53xx/patches-5.15/030-v5.15-0002-ARM-dts-NSP-enable-DMA-on-bcm988312hr.patch
@@ -0,0 +1,29 @@
+From 1b90dde4278a7b459979706b572785bc3a10bbb5 Mon Sep 17 00:00:00 2001
+From: Matthew Hagan <mnhagan88@gmail.com>
+Date: Thu, 10 Jun 2021 21:35:12 +0100
+Subject: [PATCH] ARM: dts: NSP: enable DMA on bcm988312hr
+
+The previous patch "ARM: dts: NSP: Disable PL330 by default, add
+dma-coherent property" set the DMAC to disabled by default, requiring it
+to be manually enabled on each device. The bcm988312hr was mistakenly
+omitted. This patch adds it back.
+
+Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ arch/arm/boot/dts/bcm988312hr.dts | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm988312hr.dts
++++ b/arch/arm/boot/dts/bcm988312hr.dts
+@@ -58,6 +58,10 @@
+ 
+ /* USB 3 support needed to be complete */
+ 
++&dma {
++	status = "okay";
++};
++
+ &amac0 {
+ 	status = "okay";
+ };