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