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lib: utils/fdt: Add fdt_parse_phandle_with_args() API

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The libfdt project does not have a generic API to parse phandle
with args from a DT node so we add fdt_parse_phandle_with_args()
for this purpose. This new API will be useful to FDT based drivers.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2021-07-13 11:23:41 +08:00
committed by Anup Patel
parent 17729d44da
commit e931f387b2
2 changed files with 58 additions and 0 deletions
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11
include/sbi_utils/fdt/fdt_helper.h
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@@ -17,6 +17,13 @@ struct fdt_match {
void *data;
};
#define FDT_MAX_PHANDLE_ARGS 16
struct fdt_phandle_args {
int node_offset;
int args_count;
u32 args[FDT_MAX_PHANDLE_ARGS];
};
struct platform_uart_data {
unsigned long addr;
unsigned long freq;
@@ -32,6 +39,10 @@ int fdt_find_match(void *fdt, int startoff,
const struct fdt_match *match_table,
const struct fdt_match **out_match);
int fdt_parse_phandle_with_args(void *fdt, int nodeoff,
const char *prop, const char *cells_prop,
int index, struct fdt_phandle_args *out_args);
int fdt_get_node_addr_size(void *fdt, int node, unsigned long *addr,
unsigned long *size);