mirror of
https://github.com/Fishwaldo/opensbi.git
synced 2025-07-23 13:29:15 +00:00
ef9f02e7fb
Since we can get the PLMT base address and timer frequency from
device tree, move plmt timer device to fdt timer framework.
dts example (Quad-core AX45MP):
cpus {
...
timebase-frequency = <0x3938700>;
...
}
soc {
...
plmt0@e6000000 {
compatible = "andestech,plmt0";
reg = <0x00 0xe6000000 0x00 0x100000>;
interrupts-extended = <&cpu0_intc 0x07
&cpu1_intc 0x07
&cpu2_intc 0x07
&cpu3_intc 0x07>;
};
...
}
Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
51 lines
1 KiB
C
51 lines
1 KiB
C
/*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2022 Andes Technology Corporation
|
|
*
|
|
* Authors:
|
|
* Yu Chien Peter Lin <peterlin@andestech.com>
|
|
*/
|
|
|
|
#include <sbi_utils/fdt/fdt_helper.h>
|
|
#include <sbi_utils/timer/fdt_timer.h>
|
|
#include <sbi_utils/timer/andes_plmt.h>
|
|
|
|
extern struct plmt_data plmt;
|
|
|
|
static int fdt_plmt_cold_timer_init(void *fdt, int nodeoff,
|
|
const struct fdt_match *match)
|
|
{
|
|
int rc;
|
|
unsigned long plmt_base;
|
|
|
|
rc = fdt_parse_plmt_node(fdt, nodeoff, &plmt_base, &plmt.size,
|
|
&plmt.hart_count);
|
|
if (rc)
|
|
return rc;
|
|
|
|
plmt.time_val = (u64 *)plmt_base;
|
|
plmt.time_cmp = (u64 *)(plmt_base + 0x8);
|
|
|
|
rc = fdt_parse_timebase_frequency(fdt, &plmt.timer_freq);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = plmt_cold_timer_init(&plmt);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct fdt_match timer_plmt_match[] = {
|
|
{ .compatible = "andestech,plmt0" },
|
|
{},
|
|
};
|
|
|
|
struct fdt_timer fdt_timer_plmt = {
|
|
.match_table = timer_plmt_match,
|
|
.cold_init = fdt_plmt_cold_timer_init,
|
|
.warm_init = plmt_warm_timer_init,
|
|
.exit = NULL,
|
|
};
|