mainline/master bisection: baseline.dmesg.crit on qemu_arm-vexpress-a15
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Wed Jul 8 18:10:13 EDT 2020
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mainline/master bisection: baseline.dmesg.crit on qemu_arm-vexpress-a15
Summary:
Start: dcde237b9b0e Merge tag 'perf-tools-fixes-2020-07-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Plain log: https://storage.kernelci.org/mainline/master/v5.8-rc4-61-gdcde237b9b0e/arm/vexpress_defconfig/gcc-8/lab-collabora/baseline-vexpress-v2p-ca15-tc1.txt
HTML log: https://storage.kernelci.org/mainline/master/v5.8-rc4-61-gdcde237b9b0e/arm/vexpress_defconfig/gcc-8/lab-collabora/baseline-vexpress-v2p-ca15-tc1.html
Result: 38ac46002d1d arm: dts: vexpress: Move mcc node back into motherboard node
Checks:
revert: PASS
verify: PASS
Parameters:
Tree: mainline
URL: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Branch: master
Target: qemu_arm-vexpress-a15
CPU arch: arm
Lab: lab-collabora
Compiler: gcc-8
Config: vexpress_defconfig
Test case: baseline.dmesg.crit
Breaking commit found:
-------------------------------------------------------------------------------
commit 38ac46002d1df5707566a73486452851341028d2
Author: Andre Przywara <andre.przywara at arm.com>
Date: Wed Jun 3 17:22:37 2020 +0100
arm: dts: vexpress: Move mcc node back into motherboard node
Commit d9258898ad49 ("arm64: dts: arm: vexpress: Move fixed devices
out of bus node") moved the "mcc" DT node into the root node, because
it does not have any children using "reg" properties, so does violate
some dtc checks about "simple-bus" nodes.
However this broke the vexpress config-bus code, which walks up the
device tree to find the first node with an "arm,vexpress,site" property.
This gave the wrong result (matching the root node instead of the
motherboard node), so broke the clocks and some other devices for
VExpress boards.
Move the whole node back into its original position. This re-introduces
the dtc warning, but is conceptually the right thing to do. The dtc
warning seems to be overzealous here, there are discussions on fixing or
relaxing this check instead.
Link: https://lore.kernel.org/r/20200603162237.16319-1-andre.przywara@arm.com
Fixes: d9258898ad49 ("arm64: dts: vexpress: Move fixed devices out of bus node")
Reported-and-tested-by: Guenter Roeck <linux at roeck-us.net>
Signed-off-by: Andre Przywara <andre.przywara at arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla at arm.com>
diff --git a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
index e6308fb76183..a88ee5294d35 100644
--- a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
+++ b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
@@ -100,79 +100,6 @@
};
};
- mcc {
- compatible = "arm,vexpress,config-bus";
- arm,vexpress,config-bridge = <&v2m_sysreg>;
-
- oscclk0 {
- /* MCC static memory clock */
- compatible = "arm,vexpress-osc";
- arm,vexpress-sysreg,func = <1 0>;
- freq-range = <25000000 60000000>;
- #clock-cells = <0>;
- clock-output-names = "v2m:oscclk0";
- };
-
- v2m_oscclk1: oscclk1 {
- /* CLCD clock */
- compatible = "arm,vexpress-osc";
- arm,vexpress-sysreg,func = <1 1>;
- freq-range = <23750000 65000000>;
- #clock-cells = <0>;
- clock-output-names = "v2m:oscclk1";
- };
-
- v2m_oscclk2: oscclk2 {
- /* IO FPGA peripheral clock */
- compatible = "arm,vexpress-osc";
- arm,vexpress-sysreg,func = <1 2>;
- freq-range = <24000000 24000000>;
- #clock-cells = <0>;
- clock-output-names = "v2m:oscclk2";
- };
-
- volt-vio {
- /* Logic level voltage */
- compatible = "arm,vexpress-volt";
- arm,vexpress-sysreg,func = <2 0>;
- regulator-name = "VIO";
- regulator-always-on;
- label = "VIO";
- };
-
- temp-mcc {
- /* MCC internal operating temperature */
- compatible = "arm,vexpress-temp";
- arm,vexpress-sysreg,func = <4 0>;
- label = "MCC";
- };
-
- reset {
- compatible = "arm,vexpress-reset";
- arm,vexpress-sysreg,func = <5 0>;
- };
-
- muxfpga {
- compatible = "arm,vexpress-muxfpga";
- arm,vexpress-sysreg,func = <7 0>;
- };
-
- shutdown {
- compatible = "arm,vexpress-shutdown";
- arm,vexpress-sysreg,func = <8 0>;
- };
-
- reboot {
- compatible = "arm,vexpress-reboot";
- arm,vexpress-sysreg,func = <9 0>;
- };
-
- dvimode {
- compatible = "arm,vexpress-dvimode";
- arm,vexpress-sysreg,func = <11 0>;
- };
- };
-
bus at 8000000 {
motherboard-bus {
model = "V2M-P1";
@@ -435,6 +362,79 @@
};
};
};
+
+ mcc {
+ compatible = "arm,vexpress,config-bus";
+ arm,vexpress,config-bridge = <&v2m_sysreg>;
+
+ oscclk0 {
+ /* MCC static memory clock */
+ compatible = "arm,vexpress-osc";
+ arm,vexpress-sysreg,func = <1 0>;
+ freq-range = <25000000 60000000>;
+ #clock-cells = <0>;
+ clock-output-names = "v2m:oscclk0";
+ };
+
+ v2m_oscclk1: oscclk1 {
+ /* CLCD clock */
+ compatible = "arm,vexpress-osc";
+ arm,vexpress-sysreg,func = <1 1>;
+ freq-range = <23750000 65000000>;
+ #clock-cells = <0>;
+ clock-output-names = "v2m:oscclk1";
+ };
+
+ v2m_oscclk2: oscclk2 {
+ /* IO FPGA peripheral clock */
+ compatible = "arm,vexpress-osc";
+ arm,vexpress-sysreg,func = <1 2>;
+ freq-range = <24000000 24000000>;
+ #clock-cells = <0>;
+ clock-output-names = "v2m:oscclk2";
+ };
+
+ volt-vio {
+ /* Logic level voltage */
+ compatible = "arm,vexpress-volt";
+ arm,vexpress-sysreg,func = <2 0>;
+ regulator-name = "VIO";
+ regulator-always-on;
+ label = "VIO";
+ };
+
+ temp-mcc {
+ /* MCC internal operating temperature */
+ compatible = "arm,vexpress-temp";
+ arm,vexpress-sysreg,func = <4 0>;
+ label = "MCC";
+ };
+
+ reset {
+ compatible = "arm,vexpress-reset";
+ arm,vexpress-sysreg,func = <5 0>;
+ };
+
+ muxfpga {
+ compatible = "arm,vexpress-muxfpga";
+ arm,vexpress-sysreg,func = <7 0>;
+ };
+
+ shutdown {
+ compatible = "arm,vexpress-shutdown";
+ arm,vexpress-sysreg,func = <8 0>;
+ };
+
+ reboot {
+ compatible = "arm,vexpress-reboot";
+ arm,vexpress-sysreg,func = <9 0>;
+ };
+
+ dvimode {
+ compatible = "arm,vexpress-dvimode";
+ arm,vexpress-sysreg,func = <11 0>;
+ };
+ };
};
};
};
-------------------------------------------------------------------------------
Git bisection log:
-------------------------------------------------------------------------------
git bisect start
# good: [719fdd32921fb7e3208db8832d32ae1c2d68900f] afs: Fix storage of cell names
git bisect good 719fdd32921fb7e3208db8832d32ae1c2d68900f
# bad: [dcde237b9b0eb1d19306e6f48c0a4e058907619f] Merge tag 'perf-tools-fixes-2020-07-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
git bisect bad dcde237b9b0eb1d19306e6f48c0a4e058907619f
# bad: [442ad2254ac56b39870c0cfed96d500921fea5d5] perf record: Fix duplicated sideband events with Intel PT system wide tracing
git bisect bad 442ad2254ac56b39870c0cfed96d500921fea5d5
# bad: [f7db192b2d71ea42627a32349d59a5f99f2aafcc] Merge tag 'arm-omap-fixes-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
git bisect bad f7db192b2d71ea42627a32349d59a5f99f2aafcc
# good: [ae71d4bf0074a81cc04255c96e3de0a49b1d95fa] Merge tag 'perf-urgent-2020-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good ae71d4bf0074a81cc04255c96e3de0a49b1d95fa
# good: [d528945d7762be94beca4c111bb95dcc9a9f39c0] Merge tag 'omap-for-v5.8/fixes-rc1-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/omap-fixes
git bisect good d528945d7762be94beca4c111bb95dcc9a9f39c0
# bad: [2596ce4b4ded685b67fed407aed2bfe6ebcc39cb] Merge tag 'arm-soc/for-5.8/drivers-fixes' of https://github.com/Broadcom/stblinux into arm/fixes
git bisect bad 2596ce4b4ded685b67fed407aed2bfe6ebcc39cb
# bad: [0f77ce26ebcf6ea384421d2dd47b924b83649692] Revert "ARM: sti: Implement dummy L2 cache's write_sec"
git bisect bad 0f77ce26ebcf6ea384421d2dd47b924b83649692
# bad: [d68ec1644dd546851d651787a638aead32a60a6f] Merge tag 'juno-fix-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes
git bisect bad d68ec1644dd546851d651787a638aead32a60a6f
# bad: [38ac46002d1df5707566a73486452851341028d2] arm: dts: vexpress: Move mcc node back into motherboard node
git bisect bad 38ac46002d1df5707566a73486452851341028d2
# first bad commit: [38ac46002d1df5707566a73486452851341028d2] arm: dts: vexpress: Move mcc node back into motherboard node
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