[PATCH 1/2] ARC: [plat-axs10x]: DTS: Add reset controller node to manage ethernet reset

From: Eugeniy Paltsev
Date: Tue Nov 14 2017 - 09:32:38 EST


DW ethernet controller on axs10x hangs sometimes after SW reset, so
add reset node to make possible to reset DW ethernet controller HW.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@xxxxxxxxxxxx>
---
arch/arc/boot/dts/axs10x_mb.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi b/arch/arc/boot/dts/axs10x_mb.dtsi
index e114000..74d070c 100644
--- a/arch/arc/boot/dts/axs10x_mb.dtsi
+++ b/arch/arc/boot/dts/axs10x_mb.dtsi
@@ -16,6 +16,12 @@
ranges = <0x00000000 0x0 0xe0000000 0x10000000>;
interrupt-parent = <&mb_intc>;

+ creg_rst: reset-controller@11220 {
+ compatible = "snps,axs10x-reset";
+ #reset-cells = <1>;
+ reg = <0x11220 0x4>;
+ };
+
i2sclk: i2sclk@100a0 {
compatible = "snps,axs10x-i2s-pll-clock";
reg = <0x100a0 0x10>;
@@ -73,6 +79,8 @@
clocks = <&apbclk>;
clock-names = "stmmaceth";
max-speed = <100>;
+ resets = <&creg_rst 5>;
+ reset-names = "stmmaceth";
};

ehci@0x40000 {
--
2.9.3