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lib/utils: Support fixing up the official DT bindings of PLIC

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Current fdt_plic_fixup() only does necessary fix-up against the legacy
"riscv,plic0" node. The upstream Linux kernel defines its official DT
bindings which uses "sifive,plic-1.0.0" as the compatible string and
we should check that first, and if not present fall back to legacy.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Bin Meng
2021-03-27 13:05:27 +08:00
committed by Anup Patel
parent ca3f35821b
commit 4edc822407
1 changed files with 6 additions and 3 deletions
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9
lib/utils/fdt/fdt_fixup.c
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@@ -57,9 +57,12 @@ void fdt_plic_fixup(void *fdt)
int i, cells_count;
int plic_off;
plic_off = fdt_node_offset_by_compatible(fdt, 0, "riscv,plic0");
if (plic_off < 0)
return;
plic_off = fdt_node_offset_by_compatible(fdt, 0, "sifive,plic-1.0.0");
if (plic_off < 0) {
plic_off = fdt_node_offset_by_compatible(fdt, 0, "riscv,plic0");
if (plic_off < 0)
return;
}
cells = (u32 *)fdt_getprop(fdt, plic_off,
"interrupts-extended", &cells_count);