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

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>

diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c
index a73a7d7..faba423 100644 (file)
--- a/sound/soc/codecs/lpass-rx-macro.c
+++ b/sound/soc/codecs/lpass-rx-macro.c
@@ -3670,9 +3670,9 @@ 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 473d3cd..589c490 100644 (file)
--- a/sound/soc/codecs/lpass-tx-macro.c
+++ b/sound/soc/codecs/lpass-tx-macro.c
@@ -2098,9 +2098,9 @@ 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 ba7480f..3f6f1bd 100644 (file)
--- a/sound/soc/codecs/lpass-wsa-macro.c
+++ b/sound/soc/codecs/lpass-wsa-macro.c
@@ -2506,9 +2506,9 @@ 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;
 }