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of: reserved-memory: Support lookup of regions by name

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Add support for looking up memory regions by name. This looks up the
given name in the newly introduced memory-region-names property and
returns the memory region at the corresponding index in the memory-
region(s) property.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding
2020-04-03 19:44:52 +02:00
parent 8f3d9f3542
commit 0da0e31600
2 changed files with 30 additions and 0 deletions
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11
include/linux/of_reserved_mem.h
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@@ -33,6 +33,9 @@ typedef int (*reservedmem_of_init_fn)(struct reserved_mem *rmem);
int of_reserved_mem_device_init_by_idx(struct device *dev,
struct device_node *np, int idx);
int of_reserved_mem_device_init_by_name(struct device *dev,
struct device_node *np,
const char *name);
void of_reserved_mem_device_release(struct device *dev);
void fdt_init_reserved_mem(void);
@@ -45,6 +48,14 @@ static inline int of_reserved_mem_device_init_by_idx(struct device *dev,
{
return -ENOSYS;
}
static inline int of_reserved_mem_device_init_by_name(struct device *dev,
struct device_node *np,
const char *name)
{
return -ENOSYS;
}
static inline void of_reserved_mem_device_release(struct device *pdev) { }
static inline void fdt_init_reserved_mem(void) { }