arm64: dts: qcom: sa8540p-ride: disable pcie2a node

pcie2a and pcie3a both cause interrupt storms to occur. However, when
both are enabled simultaneously, the two combined interrupt storms will
lead to rcu stalls. Red Hat is the only company still using this board
and since we still need pcie3a, just disable pcie2a.

Signed-off-by: Lucas Karpinski <lkarpins@redhat.com>
Reviewed-by: Brian Masney <bmasney@redhat.com>
Link: https://lore.kernel.org/r/qcoqksikfvdqxk6stezbzc7l2br37ccgqswztzqejmhrkhbrwt@ta4npsm35mqk
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/arch/arm64/boot/dts/qcom/sa8540p-ride.dts b/arch/arm64/boot/dts/qcom/sa8540p-ride.dts
index b04f72ec097ca509846a007b387004a4a69cc2dc..177b9dad6ff703467ea4d10e0f5a651d11569275 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sa8540p-ride.dts
+++ b/arch/arm64/boot/dts/qcom/sa8540p-ride.dts
@@ -376,14 +376,14 @@
        pinctrl-names = "default";
        pinctrl-0 = <&pcie2a_default>;
 
-       status = "okay";
+       status = "disabled";
 };
 
 &pcie2a_phy {
        vdda-phy-supply = <&vreg_l11a>;
        vdda-pll-supply = <&vreg_l3a>;
 
-       status = "okay";
+       status = "disabled";
 };
 
 &pcie3a {