* [PATCH v2] ARM: dts: rockchip: Reserve unusable memory region on rk3066
@ 2016-10-05 16:18 =?UTF-8?q?Pawe=C5=82=20Jarosz?=
0 siblings, 0 replies; only message in thread
From: =?UTF-8?q?Pawe=C5=82=20Jarosz?= @ 2016-10-05 16:18 UTC (permalink / raw)
To: huangtao-TNX95d0MmH7DzftRWevZcw, heiko-4mtYJXux2i+zQB+pC5nmwQ,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r
For some reason accessing memory region above 0x9F000000 freezes
system on rk3066. There is similiar bug on later rockchip soc (rk3288)
solved same way.
Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
---
Changes in v2:
- updated commit message.
arch/arm/boot/dts/rk3066a.dtsi | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/arm/boot/dts/rk3066a.dtsi b/arch/arm/boot/dts/rk3066a.dtsi
index 0d0dae3..44c8956 100644
--- a/arch/arm/boot/dts/rk3066a.dtsi
+++ b/arch/arm/boot/dts/rk3066a.dtsi
@@ -93,6 +93,19 @@
};
};
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+ /*
+ * The rk3066 cannot use the memory area above 0x9F000000
+ * for some unknown reason.
+ */
+ unusable@9F000000 {
+ reg = <0x9F000000 0x1000000>;
+ };
+ };
+
i2s0: i2s@10118000 {
compatible = "rockchip,rk3066-i2s";
reg = <0x10118000 0x2000>;
--
2.7.4
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