Add a device node for the L2 cache, and link the CPU nodes to it.
The L2 cache for the Cortex-A7 CPU cores is 512 KiB large (organized as
64 KiB x 8 ways).
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
What are the DT bindings for a Cortex-A7 L2 cache controller?
v2:
- Drop (incorrect) optional cache-{size,sets,{block,line}-size}
properties, as this information is auto-detected,
- Integrate linking CPUs to L2 cache into this patch,
- Extracted from series "[PATCH/RFC 00/15] ARM: shmobile: R-Car: Add
SYSC PM Domain DT Support".
---
arch/arm/boot/dts/r8a7794.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm/boot/dts/r8a7794.dtsi b/arch/arm/boot/dts/r8a7794.dtsi
index 56acafbb70dc7bc9..1b53495b9c95611c 100644
--- a/arch/arm/boot/dts/r8a7794.dtsi
+++ b/arch/arm/boot/dts/r8a7794.dtsi
@@ -40,6 +40,7 @@
compatible = "arm,cortex-a7";
reg = <0>;
clock-frequency = <1000000000>;
+ next-level-cache = <&L2_CA7>;
};
cpu1: cpu@1 {
@@ -47,9 +48,16 @@
compatible = "arm,cortex-a7";
reg = <1>;
clock-frequency = <1000000000>;
+ next-level-cache = <&L2_CA7>;
};
};
+ L2_CA7: cache-controller@1 {
+ compatible = "cache";
+ cache-unified;
+ cache-level = <2>;
+ };
+
gic: interrupt-controller@f1001000 {
compatible = "arm,gic-400";
#interrupt-cells = <3>;
--
1.9.1
--
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