linux-kernel - [PATCH] firmware: ti_sci: allow frequency change for disabled clocks by default

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Message-ID: <20200907110357.2972-1-t-kristo@ti.com>
Date:   Mon, 7 Sep 2020 14:03:57 +0300
From:   Tero Kristo <t-kristo@...com>
To:     <nm@...com>, <ssantosh@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     <linux-kernel@...r.kernel.org>
Subject: [PATCH] firmware: ti_sci: allow frequency change for disabled clocks by default

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@...com>
Signed-off-by: Tero Kristo <t-kristo@...com>
---
 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);
 }
 
-- 
2.17.1

--
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