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sifive_u: Set 'clock-frequency' DT property for SiFive UART

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The 'clock-frequency' DT property is required by U-Boot to compute
the divider value. This patch sets the 'clock-frequency' DT property
of the SiFive UART device tree node (similar to virt machine).

Signed-off-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This commit is contained in:
Anup Patel 2018-12-13 18:36:17 +00:00 committed by Palmer Dabbelt
parent fe93582cf5
commit 6c60757eb6
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GPG Key ID: EF4CA1502CCBAB41
1 changed files with 2 additions and 0 deletions
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2
hw/riscv/sifive_u.c
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@ -241,6 +241,8 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
qemu_fdt_setprop_cells(fdt, nodename, "reg",
0x0, memmap[SIFIVE_U_UART0].base,
0x0, memmap[SIFIVE_U_UART0].size);
qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency",
SIFIVE_U_CLOCK_FREQ / 2);
qemu_fdt_setprop_cells(fdt, nodename, "interrupt-parent", plic_phandle);
qemu_fdt_setprop_cells(fdt, nodename, "interrupts", 1);