linux-kernel - [PATCH v2] dt-bindings: timer: arm,arch

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220922161149.371565-1-jean-philippe@linaro.org>
Date:   Thu, 22 Sep 2022 17:11:50 +0100
From:   Jean-Philippe Brucker <jean-philippe@...aro.org>
To:     maz@...nel.org, mark.rutland@....com
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v2] dt-bindings: timer: arm,arch_timer: Allow dual compatible string

Since the Armv7 and Armv8 architected timers are compatible, it is valid
to expose a devicetree node with compatible string "arm,armv8-timer"
followed by "arm,armv7-timer". For example a 32-bit guest running on a
64-bit machine may look for the v7 string even though the hardware is v8.
VMMs such as QEMU and kvmtool have been using this compatible string for
some time. Clean up the compatible list a little and add the dual
option.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@...aro.org>
---
v2: Reworked commit message, removed "obsolete" description
v1: https://lore.kernel.org/all/20220916132959.1910374-1-jean-philippe@linaro.org/
---
 .../devicetree/bindings/timer/arm,arch_timer.yaml     | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml b/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml
index df8ce87fd54b..c5fc3b6c8bd0 100644
--- a/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml
+++ b/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml
@@ -22,16 +22,15 @@ properties:
   compatible:
     oneOf:
       - items:
-          - enum:
-              - arm,cortex-a15-timer
-          - enum:
-              - arm,armv7-timer
+          - const: arm,cortex-a15-timer
+          - const: arm,armv7-timer
       - items:
           - enum:
               - arm,armv7-timer
-      - items:
-          - enum:
               - arm,armv8-timer
+      - items:
+          - const: arm,armv8-timer
+          - const: arm,armv7-timer
 
   interrupts:
     minItems: 1
-- 
2.37.3