Re: [PATCH v2 2/4] dt-bindings: arm: Document reboot mode magic

From: Sudeep Holla <sudeep.holla@arm.com>
To: Elliot Berman <quic_eberman@quicinc.com>
Cc: Bjorn Andersson <andersson@kernel.org>,
	Sudeep Holla <sudeep.holla@arm.com>,
	Konrad Dybcio <konrad.dybcio@linaro.org>,
	Sebastian Reichel <sre@kernel.org>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>, Vinod Koul <vkoul@kernel.org>,
	Andy Yan <andy.yan@rock-chips.com>,
	Lorenzo Pieralisi <lpieralisi@kernel.org>,
	"Mark Rutland" <mark.rutland@arm.com>,
	Bartosz Golaszewski <bartosz.golaszewski@linaro.org>,
	Satya Durga Srinivasu Prabhala <quic_satyap@quicinc.com>,
	Melody Olvera <quic_molvera@quicinc.com>,
	Shivendra Pratap <quic_spratap@quicinc.com>,
	<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	Florian Fainelli <florian.fainelli@broadcom.com>,
	<linux-pm@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>
Subject: Re: [PATCH v2 2/4] dt-bindings: arm: Document reboot mode magic
Date: Tue, 16 Apr 2024 10:30:18 +0100	[thread overview]
Message-ID: <Zh5FKtLVhIH-6R-I@bogus> (raw)
In-Reply-To: <20240414-arm-psci-system_reset2-vendor-reboots-v2-2-da9a055a648f@quicinc.com>

On Sun, Apr 14, 2024 at 12:30:25PM -0700, Elliot Berman wrote:
> Add bindings to describe vendor-specific reboot modes. Values here
> correspond to valid parameters to vendor-specific reset types in PSCI
> SYSTEM_RESET2 call.
>

IIUC, PSCI SYSTEM_RESET will be always supported, so the choice of using
SYSTEM_RESET2 sounds like a system policy and must not have any information
in the device tree. All required support from PSCI is discoverable and
the policy choice must be userspace driven. That's my opinion.

-- 
Regards,
Sudeep