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lib: utils: Add FDT match table based node lookup

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This patch adds FDT match table based node lookup funcitons.

These functions will be useful in implementing simple FDT
based driver frameworks.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2020-04-24 18:32:10 +05:30
committed by Anup Patel
parent e3ad7c13a0
commit a39cd6fe4c
2 changed files with 52 additions and 0 deletions
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11
include/sbi_utils/fdt/fdt_helper.h
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@@ -10,6 +10,11 @@
#ifndef __FDT_HELPER_H__
#define __FDT_HELPER_H__
struct fdt_match {
const char *compatible;
void *data;
};
struct platform_uart_data {
unsigned long addr;
unsigned long freq;
@@ -23,6 +28,12 @@ struct platform_plic_data {
unsigned long num_src;
};
const struct fdt_match *fdt_match_node(void *fdt, int nodeoff,
const struct fdt_match *match_table);
int fdt_find_match(void *fdt, const struct fdt_match *match_table,
const struct fdt_match **out_match);
int fdt_parse_uart8250_node(void *fdt, int nodeoffset,
struct platform_uart_data *uart);