raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-06 10:00:17 +00:00
Code Issues Projects Releases Wiki Activity

remoteproc: qcom: q6v5-pil: fix modem hang on SDM845 after axis2 clk unvote

Browse Source 
[ Upstream commit 7cbb540a3a ]

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 <bjorn.andersson@linaro.org>
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sibi Sankar
2018-07-09 20:42:20 +05:30
committed by Greg Kroah-Hartman
parent 435962f3be
commit 6e36e98ecb
1 changed files with 0 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/remoteproc/qcom_q6v5_pil.c
View File

@@ -1370,7 +1370,6 @@ static const struct rproc_hexagon_res sdm845_mss = {
.hexagon_mba_image = "mba.mbn", .hexagon_mba_image = "mba.mbn",
.proxy_clk_names = (char*[]){ .proxy_clk_names = (char*[]){
"xo", "xo",
"axis2",
"prng", "prng",
NULL NULL
}, },