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    Subject[PATCH AUTOSEL 5.15 19/51] soundwire: qcom: adjust autoenumeration timeout
    Date
    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 0ef79d60e88e..f5955826b152 100644
    --- a/drivers/soundwire/qcom.c
    +++ b/drivers/soundwire/qcom.c
    @@ -97,7 +97,7 @@

    #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
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