diff options
Diffstat (limited to 'target/linux/qualcommax/patches-6.6/0903-psci-dont-advertise-OSI-support-for-IPQ6018.patch')
| -rw-r--r-- | target/linux/qualcommax/patches-6.6/0903-psci-dont-advertise-OSI-support-for-IPQ6018.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/qualcommax/patches-6.6/0903-psci-dont-advertise-OSI-support-for-IPQ6018.patch b/target/linux/qualcommax/patches-6.6/0903-psci-dont-advertise-OSI-support-for-IPQ6018.patch new file mode 100644 index 0000000000..5fcb90098f --- /dev/null +++ b/target/linux/qualcommax/patches-6.6/0903-psci-dont-advertise-OSI-support-for-IPQ6018.patch @@ -0,0 +1,40 @@ +From 563db68137475d011b355bfe674d1b7a24778091 Mon Sep 17 00:00:00 2001 +From: Robert Marko <robimarko@gmail.com> +Date: Sat, 8 Oct 2022 22:26:31 +0200 +Subject: [PATCH] psci: dont advertise OSI support for IPQ6018 + +Some older IPQ60xx SoC series boards ship with TrustZone/QSEE firmware +older than TZ.WNS.5.1-00084 which will advertise OSI[1] but are broken +and trying to use OSI will cause the board to hang until WDT kicks in. + +So workaround it by checking for SoC compatible and returning false so +OSI is not used. + +[1] https://www.spinics.net/lists/linux-arm-msm/msg79916.html + +Signed-off-by: Robert Marko <robimarko@gmail.com> +--- + drivers/firmware/psci/psci.c | 12 ++++++++++++ + 1 file changed, 12 insertions(+) + +--- a/drivers/firmware/psci/psci.c ++++ b/drivers/firmware/psci/psci.c +@@ -87,6 +87,18 @@ static inline bool psci_has_ext_power_st + + bool psci_has_osi_support(void) + { ++ /* ++ * Some older IPQ60xx SoC series boards ship with ++ * TrustZone/QSEE firmware older than TZ.WNS.5.1-00084 ++ * which will advertise OSI but is broken and trying ++ * to use OSI will cause the board to hang until WDT ++ * kicks in. ++ * So workaround it by checking for SoC compatible ++ * and returning false so OSI is not used. ++ */ ++ if (of_machine_is_compatible("qcom,ipq6018")) ++ return false; ++ + return psci_cpu_suspend_feature & PSCI_1_0_OS_INITIATED; + } + |