Commit 55751d3e authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Bjorn Andersson
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firmware: qcom: tzmem: blacklist more platforms for SHM Bridge 



The SHM bridge makes the Qualcomm RB3 and SM8150-HDK reset while probing
the RMTFS (in qcom_scm_assign_mem()). Blacklist the SHM Bridge on
corresponding platforms using SoC-level compat string. If later it's
found that the bad behaviour is limited just to the particular boards
rather than SoC, the compat strings can be adjusted.

Reported-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Fixes: f86c6149 ("firmware: qcom: tzmem: enable SHM Bridge support")
Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on Qualcomm RB3
Link: https://lore.kernel.org/r/20240704-shmbridge-blacklist-v1-1-14b027b3b2dc@linaro.org


Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
parent b066a2c4

drivers/firmware/qcom/qcom_tzmem.c

+2 −0
Original line number Diff line number Diff line
@@ -78,6 +78,8 @@ static bool qcom_tzmem_using_shm_bridge; 
/* List of machines that are known to not support SHM bridge correctly. */

static const char *const qcom_tzmem_blacklist[] = {

	"qcom,sc8180x",

	"qcom,sdm845", /* reset in rmtfs memory assignment */

	"qcom,sm8150", /* reset in rmtfs memory assignment */

	NULL

};