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| author |   Russell King <rmk+kernel@arm.linux.org.uk> | 2014-03-17 12:59:08 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-05-30 00:48:45 +0100 |
| commit | d9d1f3e2d71144348d73210cf9f1fe0b32481c79 (patch) | |
| tree | e96baeb96ed19979819dc197e11b1e0e9c06c627 /arch/arm/mm | |
| parent | ARM: l2c: fix register naming (diff) | |
| download | linux-dev-d9d1f3e2d71144348d73210cf9f1fe0b32481c79.tar.xz linux-dev-d9d1f3e2d71144348d73210cf9f1fe0b32481c79.zip | |
ARM: l2c: check that DT files specify the required "cache-unified" property
This is a required property, and should always be specified.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/cache-l2x0.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index c5c8a4152825..790343b2c13b 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -1364,6 +1364,10 @@ int __init l2x0_of_init(u32 aux_val, u32 aux_mask) data = of_match_node(l2x0_ids, np)->data; + /* All L2 caches are unified, so this property should be specified */ + if (!of_property_read_bool(np, "cache-unified")) + pr_err("L2C: device tree omits to specify unified cache\n"); + /* L2 configuration can only be changed if the cache is disabled */ if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) if (data->of_parse) |