brcm2708: update to latest patches from RPi Foundation

[openwrt/staging/chunkeey.git] / target / linux / brcm2708 / patches-4.19 / 950-0414-dts-Increase-default-coherent-pool-size.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0414-dts-Increase-default-coherent-pool-size.patch b/target/linux/brcm2708/patches-4.19/950-0414-dts-Increase-default-coherent-pool-size.patch
new file mode 100644 (file)
index 0000000..e39aeb0
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0414-dts-Increase-default-coherent-pool-size.patch
@@ -0,0 +1,27 @@
+From e13c663bfc75a628ba25afdf3f3b4a40a2c0250e Mon Sep 17 00:00:00 2001
+From: P33M <p33m@github.com>
+Date: Wed, 1 May 2019 15:00:05 +0100
+Subject: [PATCH] dts: Increase default coherent pool size
+
+dwc_otg allocates DMA-coherent buffers in atomic context for misaligned
+transfer buffers. The pool that these allocations come from is set up
+at boot-time but can be overridden by a commandline parameter -
+increase this for now to prevent failures seen on 4.19 with multiple
+USB Ethernet devices.
+
+see: https://github.com/raspberrypi/linux/issues/2924
+---
+ arch/arm/boot/dts/bcm270x.dtsi | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/bcm270x.dtsi
++++ b/arch/arm/boot/dts/bcm270x.dtsi
+@@ -3,7 +3,7 @@
+ 
+ / {
+       chosen {
+-              bootargs = "";
++              bootargs = "coherent_pool=1M";
+               /delete-property/ stdout-path;
+       };
+