From: <gregkh@linuxfoundation.org>
To: dingtianhong@huawei.com, alexander.levin@verizon.com,
daniel.lezcano@linaro.org, gregkh@linuxfoundation.org,
mark.rutland@arm.com, robh@kernel.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "clocksource/drivers/arm_arch_timer: Add dt binding for hisilicon-161010101 erratum" has been added to the 4.9-stable tree
Date: Mon, 06 Nov 2017 10:11:32 +0100 [thread overview]
Message-ID: <15099594925941@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
clocksource/drivers/arm_arch_timer: Add dt binding for hisilicon-161010101 erratum
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
clocksource-drivers-arm_arch_timer-add-dt-binding-for-hisilicon-161010101-erratum.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From foo@baz Mon Nov 6 10:07:35 CET 2017
From: Ding Tianhong <dingtianhong@huawei.com>
Date: Sat, 7 Oct 2017 22:36:51 +0000
Subject: clocksource/drivers/arm_arch_timer: Add dt binding for hisilicon-161010101 erratum
From: Ding Tianhong <dingtianhong@huawei.com>
[ Upstream commit 729e55225b1f6225ee7a2a358d5141a3264627c4 ]
This erratum describes a bug in logic outside the core, so MIDR can't be
used to identify its presence, and reading an SoC-specific revision
register from common arch timer code would be awkward. So, describe it
in the device tree.
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Documentation/devicetree/bindings/arm/arch_timer.txt | 6 ++++++
1 file changed, 6 insertions(+)
--- a/Documentation/devicetree/bindings/arm/arch_timer.txt
+++ b/Documentation/devicetree/bindings/arm/arch_timer.txt
@@ -31,6 +31,12 @@ to deliver its interrupts via SPIs.
This also affects writes to the tval register, due to the implicit
counter read.
+- hisilicon,erratum-161010101 : A boolean property. Indicates the
+ presence of Hisilicon erratum 161010101, which says that reading the
+ counters is unreliable in some cases, and reads may return a value 32
+ beyond the correct value. This also affects writes to the tval
+ registers, due to the implicit counter read.
+
** Optional properties:
- arm,cpu-registers-not-fw-configured : Firmware does not initialize
Patches currently in stable-queue which might be from dingtianhong@huawei.com are
queue-4.9/clocksource-drivers-arm_arch_timer-add-dt-binding-for-hisilicon-161010101-erratum.patch
reply other threads:[~2017-11-06 9:11 UTC|newest]
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