ASoC: codecs: lpass: fix the order or clks turn off during suspend

[ Upstream commit a4a3203426f4b67535d6442ddc5dca8878a0678f ]

The order in which clocks are stopped matters as some of the clock
like NPL are derived from MCLK.

Without this patch, Dragonboard RB5 DSP would crash with below error:
 qcom_q6v5_pas 17300000.remoteproc: fatal error received:
 ABT_dal.c:278:ABTimeout: AHB Bus hang is detected,
 Number of bus hang detected := 2 , addr0 = 0x3370000 , addr1 = 0x0!!!

Turn off  fsgen first, followed by npl and then finally mclk, which is exactly
the opposite order of enable sequence.

Fixes: 1dc3459009c3 ("ASoC: codecs: lpass: register mclk after runtime pm")
Reported-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Amit Pundir <amit.pundir@linaro.org>
Link: https://lore.kernel.org/r/20230323110125.23790-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c
index 8621cfa..1639f3b 100644 (file)
--- a/sound/soc/codecs/lpass-rx-macro.c
+++ b/sound/soc/codecs/lpass-rx-macro.c
@@ -3667,9 +3667,9 @@ static int __maybe_unused rx_macro_runtime_suspend(struct device *dev)
        regcache_cache_only(rx->regmap, true);
        regcache_mark_dirty(rx->regmap);
 
-       clk_disable_unprepare(rx->mclk);
-       clk_disable_unprepare(rx->npl);
        clk_disable_unprepare(rx->fsgen);
+       clk_disable_unprepare(rx->npl);
+       clk_disable_unprepare(rx->mclk);
 
        return 0;
 }

diff --git a/sound/soc/codecs/lpass-tx-macro.c b/sound/soc/codecs/lpass-tx-macro.c
index e5611f6..d1d9d8d 100644 (file)
--- a/sound/soc/codecs/lpass-tx-macro.c
+++ b/sound/soc/codecs/lpass-tx-macro.c
@@ -1946,9 +1946,9 @@ static int __maybe_unused tx_macro_runtime_suspend(struct device *dev)
        regcache_cache_only(tx->regmap, true);
        regcache_mark_dirty(tx->regmap);
 
-       clk_disable_unprepare(tx->mclk);
-       clk_disable_unprepare(tx->npl);
        clk_disable_unprepare(tx->fsgen);
+       clk_disable_unprepare(tx->npl);
+       clk_disable_unprepare(tx->mclk);
 
        return 0;
 }

diff --git a/sound/soc/codecs/lpass-wsa-macro.c b/sound/soc/codecs/lpass-wsa-macro.c
index c012033..8ed48c8 100644 (file)
--- a/sound/soc/codecs/lpass-wsa-macro.c
+++ b/sound/soc/codecs/lpass-wsa-macro.c
@@ -2502,9 +2502,9 @@ static int __maybe_unused wsa_macro_runtime_suspend(struct device *dev)
        regcache_cache_only(wsa->regmap, true);
        regcache_mark_dirty(wsa->regmap);
 
-       clk_disable_unprepare(wsa->mclk);
-       clk_disable_unprepare(wsa->npl);
        clk_disable_unprepare(wsa->fsgen);
+       clk_disable_unprepare(wsa->npl);
+       clk_disable_unprepare(wsa->mclk);
 
        return 0;
 }