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Subject[PATCH] arm64: dts: qcom: sdm845-mtp: Mark protected gcc clocks
Date
As of v4.20-rc1 probing the GCC driver on a SDM845 device with the
standard security implementation causes an access violation and an
immediate system restart. Use the protected-clocks property to mark the
offending clocks protected for the MTP, in order to allow it to boot.

Cc: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

This depends on the acceptance of
https://lore.kernel.org/lkml/20181105194011.43770-1-swboyd@chromium.org/

arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
index d667eee4e6d0..b3def0358177 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
@@ -343,6 +343,12 @@
};
};

+&gcc {
+ protected-clocks = <GCC_QSPI_CORE_CLK>,
+ <GCC_QSPI_CORE_CLK_SRC>,
+ <GCC_QSPI_CNOC_PERIPH_AHB_CLK>;
+};
+
&i2c10 {
status = "okay";
clock-frequency = <400000>;
--
2.18.0
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