linux-kernel - [PATCH v3 1/3] dt: psci: Add arm,psci-sys-reset2-vendor-param property

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Date:   Thu,  5 Mar 2020 11:05:27 -0800
From:   Elliot Berman <eberman@...eaurora.org>
To:     Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Sudeep Holla <sudeep.holla@....com>
Cc:     Elliot Berman <eberman@...eaurora.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Trilok Soni <tsoni@...eaurora.org>,
        Prasad Sodagudi <psodagud@...eaurora.org>,
        David Collins <collinsd@...eaurora.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/3] dt: psci: Add arm,psci-sys-reset2-vendor-param property

Some implementors of PSCI may wish to use a different reset type than
SYSTEM_WARM_RESET. For instance, Qualcomm SoCs support an alternate
reset_type which may be used in more warm reboot scenarios than
SYSTEM_WARM_RESET permits (e.g. to reboot into recovery mode).

Reviewed-by: Sudeep Holla <sudeep.holla@....com>
Signed-off-by: Elliot Berman <eberman@...eaurora.org>
---
 Documentation/devicetree/bindings/arm/psci.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/psci.yaml b/Documentation/devicetree/bindings/arm/psci.yaml
index 8ef8542..1a9d2dd 100644
--- a/Documentation/devicetree/bindings/arm/psci.yaml
+++ b/Documentation/devicetree/bindings/arm/psci.yaml
@@ -102,6 +102,13 @@ properties:
       [1] Kernel documentation - ARM idle states bindings
         Documentation/devicetree/bindings/arm/idle-states.txt
 
+  arm,psci-sys-reset2-vendor-param:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+        Vendor-specific reset type parameter to use for SYSTEM_RESET2 during
+        a warm or soft reboot. If no value is provided, then architectural
+        reset type SYSTEM_WARM_RESET is used.
+
   "#power-domain-cells":
     description:
       The number of cells in a PM domain specifier as per binding in [3].
-- 
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a Linux Foundation Collaborative Project