[PATCH AUTOSEL 5.17 20/60] soundwire: qcom: adjust autoenumeration timeout

Sasha Levin
2022-06-07T19:06:45Z

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

[ Upstream commit 74da272400b46f2e898f115d1b1cd60828766919 ]

Currently timeout for autoenumeration during probe and bus reset is set to
2 secs which is really a big value. This can have an adverse effect on
boot time if the slave device is not ready/reset.
This was the case with wcd938x which was not reset yet but we spent 2
secs waiting in the soundwire controller probe. Reduce this time to
1/10 of Hz which should be good enough time to finish autoenumeration
if any slaves are available on the bus.

Reported-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220506084705.18525-1-srinivas.kandagatla@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/soundwire/qcom.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 54813417ef8e..249f1b69ec94 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -99,7 +99,7 @@

#define SWRM_SPECIAL_CMD_ID 0xF
#define MAX_FREQ_NUM 1
-#define TIMEOUT_MS (2 * HZ)
+#define TIMEOUT_MS 100
#define QCOM_SWRM_MAX_RD_LEN 0x1
#define QCOM_SDW_MAX_PORTS 14
#define DEFAULT_CLK_FREQ 9600000
--
2.35.1