From: Sibi Sankar Date: Mon, 9 Jul 2018 15:12:20 +0000 (+0530) Subject: remoteproc: qcom: q6v5-pil: fix modem hang on SDM845 after axis2 clk unvote X-Git-Tag: v4.18.10~17 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6e36e98ecb0a9b19d8b39c016036bc10caadf404;p=users%2Fdwmw2%2Flinux.git remoteproc: qcom: q6v5-pil: fix modem hang on SDM845 after axis2 clk unvote [ Upstream commit 7cbb540a3a68e4d4a8bef2d9451afb1635b5d2d3 ] GCC_MSS_AXIS2 clock is used for disabling boot IMEM (a part of AP boot up). With Boot IMEM disable now a part TZ/ATF, AXIS2 clock is no longer required post AP boot up and expected to remain untouched. However if the clock is turned ON after Q6 is brought out of reset and later turned off, it results in modem hang. When Q6 attempts a power collapse the internal handshaking to check if AXIS2 is idle never goes through since it is turned off preventing the RSC from getting triggered, leaving modem in a funky state. Hence removing AXIS2 clk enable/disable from the driver. Reported-by: Bjorn Andersson Signed-off-by: Sibi Sankar Signed-off-by: Bjorn Andersson Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c index 2bf8e7c49f2a7..e5ec59102b014 100644 --- a/drivers/remoteproc/qcom_q6v5_pil.c +++ b/drivers/remoteproc/qcom_q6v5_pil.c @@ -1370,7 +1370,6 @@ static const struct rproc_hexagon_res sdm845_mss = { .hexagon_mba_image = "mba.mbn", .proxy_clk_names = (char*[]){ "xo", - "axis2", "prng", NULL },