1 UniPhier outer cache controller
3 UniPhier SoCs are integrated with a full-custom outer cache controller system.
4 All of them have a level 2 cache controller, and some have a level 3 cache
8 - compatible: should be "socionext,uniphier-system-cache"
9 - reg: offsets and lengths of the register sets for the device. It should
10 contain 3 regions: control register, revision register, operation register,
12 - cache-unified: specifies the cache is a unified cache.
13 - cache-size: specifies the size in bytes of the cache
14 - cache-sets: specifies the number of associativity sets of the cache
15 - cache-line-size: specifies the line size in bytes
16 - cache-level: specifies the level in the cache hierarchy. The value should
17 be 2 for L2 cache, 3 for L3 cache, etc.
20 - next-level-cache: phandle to the next level cache if present. The next level
21 cache should be also compatible with "socionext,uniphier-system-cache".
23 The L2 cache must exist to use the L3 cache; the cache hierarchy must be
24 indicated correctly with "next-level-cache" properties.
26 Example 1 (system with L2):
27 l2: l2-cache@500c0000 {
28 compatible = "socionext,uniphier-system-cache";
29 reg = <0x500c0000 0x2000>, <0x503c0100 0x4>,
32 cache-size = <0x80000>;
34 cache-line-size = <128>;
38 Example 2 (system with L2 and L3):
39 l2: l2-cache@500c0000 {
40 compatible = "socionext,uniphier-system-cache";
41 reg = <0x500c0000 0x2000>, <0x503c0100 0x8>,
44 cache-size = <0x200000>;
46 cache-line-size = <128>;
48 next-level-cache = <&l3>;
51 l3: l3-cache@500c8000 {
52 compatible = "socionext,uniphier-system-cache";
53 reg = <0x500c8000 0x2000>, <0x503c8100 0x8>,
56 cache-size = <0x400000>;
58 cache-line-size = <256>;