47 lines
1.5 KiB
Diff
47 lines
1.5 KiB
Diff
|
From 4ed0a3eb350fb629c9bdd06a79790c4af77e6409 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Ondrej Jirman <megi@xff.cz>
|
||
|
|
Date: Mon, 15 Aug 2022 02:23:37 +0200
|
||
|
|
Subject: [PATCH 374/469] ASoC: rockchip: Fix doubling of playback speed after
|
||
|
|
system sleep
|
||
|
|
|
||
|
|
There is some issue with CRU on RK3399 that can be reproduced by:
|
||
|
|
|
||
|
|
- playing some audio and stopping the playback (so that runtime PM suspends I2S)
|
||
|
|
- putting system to deep sleep and resuming it (using mainline TF-A)
|
||
|
|
- playing some audio (audio plays at 2x the normal speed)
|
||
|
|
|
||
|
|
If the audio is kept playing during system sleep cycle, the issue
|
||
|
|
does not manifest. Relevant registers in CRU are identical in bug/
|
||
|
|
no-bug scenarios, so this patch is just touching the CRU registers
|
||
|
|
without actually changing anything in the end. Touching the registers
|
||
|
|
fixes the playback speed, though.
|
||
|
|
|
||
|
|
Inspired by: https://github.com/djselbeck/linux/commit/cb4be5dec3fa18c4b344c11fed3fc57aa3bea424
|
||
|
|
|
||
|
|
Signed-off-by: Ondrej Jirman <megi@xff.cz>
|
||
|
|
---
|
||
|
|
sound/soc/rockchip/rockchip_i2s.c | 7 +++++++
|
||
|
|
1 file changed, 7 insertions(+)
|
||
|
|
|
||
|
|
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
|
||
|
|
index 575a0b9b01e9..aff3d9a21cf7 100644
|
||
|
|
--- a/sound/soc/rockchip/rockchip_i2s.c
|
||
|
|
+++ b/sound/soc/rockchip/rockchip_i2s.c
|
||
|
|
@@ -115,6 +115,13 @@ static int i2s_runtime_resume(struct device *dev)
|
||
|
|
if (ret)
|
||
|
|
clk_disable_unprepare(i2s->mclk);
|
||
|
|
|
||
|
|
+ if (ret == 0) {
|
||
|
|
+ unsigned long rate = clk_get_rate(i2s->mclk);
|
||
|
|
+
|
||
|
|
+ clk_set_rate(i2s->mclk, rate - 1);
|
||
|
|
+ clk_set_rate(i2s->mclk, rate);
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
--
|
||
|
|
2.34.1
|
||
|
|
|