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sifive_u: Set 'clock-frequency' DT property for SiFive UART
author
Anup Patel
<anup@brainfault.org>
Thu, 13 Dec 2018 18:36:17 +0000
(18:36 +0000)
committer
Palmer Dabbelt
<palmer@sifive.com>
Thu, 20 Dec 2018 20:03:26 +0000
(12:03 -0800)
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>
hw/riscv/sifive_u.c
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diff --git
a/hw/riscv/sifive_u.c
b/hw/riscv/sifive_u.c
index
5c41ee5
..
849fa2e
100644
(file)
--- a/
hw/riscv/sifive_u.c
+++ b/
hw/riscv/sifive_u.c
@@
-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);