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    Subject[PATCH 16/24] RISC-V: ACPI: clocksource/timer-riscv: Add ACPI support
    Date
    timer-riscv driver needs to get the timebase-frequency from
    RISC-V Hart Capabilities Table (RHCT) on ACPI platforms. Add
    support to read the information from RHCT.

    Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
    ---
    drivers/clocksource/timer-riscv.c | 9 +++++++++
    1 file changed, 9 insertions(+)

    diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-riscv.c
    index 4016c065a01c..8079666753a6 100644
    --- a/drivers/clocksource/timer-riscv.c
    +++ b/drivers/clocksource/timer-riscv.c
    @@ -10,6 +10,7 @@

    #define pr_fmt(fmt) "riscv-timer: " fmt

    +#include <linux/acpi.h>
    #include <linux/clocksource.h>
    #include <linux/clockchips.h>
    #include <linux/cpu.h>
    @@ -198,3 +199,11 @@ static int __init riscv_timer_init_dt(struct device_node *n)
    }

    TIMER_OF_DECLARE(riscv_timer, "riscv", riscv_timer_init_dt);
    +
    +#ifdef CONFIG_ACPI
    +static int __init riscv_timer_acpi_init(struct acpi_table_header *table)
    +{
    + return riscv_timer_init_common();
    +}
    +TIMER_ACPI_DECLARE(aclint_mtimer, ACPI_SIG_RHCT, riscv_timer_acpi_init);
    +#endif
    --
    2.38.0
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