Re: [PATCH] firmware: ti_sci: allow frequency change for disabled clocks by default

From: Nishanth Menon
Date: Mon Sep 07 2020 - 07:59:27 EST


On 14:03-20200907, Tero Kristo wrote:
> If a clock is disabled, its frequency should be allowed to change as
> it is no longer in use. Add a flag towards this to the firmware clock
> API handler routines.
>
> Tested-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
> Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
> ---
> drivers/firmware/ti_sci.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
> index 53cee17d0115..39890665a975 100644
> --- a/drivers/firmware/ti_sci.c
> +++ b/drivers/firmware/ti_sci.c
> @@ -1124,7 +1124,8 @@ static int ti_sci_cmd_get_clock(const struct ti_sci_handle *handle, u32 dev_id,
> static int ti_sci_cmd_idle_clock(const struct ti_sci_handle *handle,
> u32 dev_id, u32 clk_id)
> {
> - return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
> + return ti_sci_set_clock_state(handle, dev_id, clk_id,
> + MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE,
> MSG_CLOCK_SW_STATE_UNREQ);
> }
>
> @@ -1143,7 +1144,8 @@ static int ti_sci_cmd_idle_clock(const struct ti_sci_handle *handle,
> static int ti_sci_cmd_put_clock(const struct ti_sci_handle *handle,
> u32 dev_id, u32 clk_id)
> {
> - return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
> + return ti_sci_set_clock_state(handle, dev_id, clk_id,
> + MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE,
> MSG_CLOCK_SW_STATE_AUTO);
> }
>

Acked-by: Nishanth Menon <nm@xxxxxx>

--
Regards,
Nishanth Menon
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