From: Anup Patel <apatel@ventanamicro.com>
To: Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>
Cc: Atish Patra <atishp@atishpatra.org>,
Samuel Holland <samuel@sholland.org>,
Anup Patel <anup@brainfault.org>,
devicetree@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org,
Anup Patel <apatel@ventanamicro.com>
Subject: [PATCH 1/2] dt-bindings: riscv: Add optional DT property riscv,timer-always-on
Date: Tue, 19 Jul 2022 11:17:28 +0530 [thread overview]
Message-ID: <20220719054729.2224766-2-apatel@ventanamicro.com> (raw)
In-Reply-To: <20220719054729.2224766-1-apatel@ventanamicro.com>
We add an optional DT property riscv,timer-always-on which if present
in CPU DT node then CPU timer is always powered-on and never loses
context.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
---
Documentation/devicetree/bindings/riscv/cpus.yaml | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
index d632ac76532e..33832b8dfaab 100644
--- a/Documentation/devicetree/bindings/riscv/cpus.yaml
+++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
@@ -78,6 +78,12 @@ properties:
- rv64imac
- rv64imafdc
+ riscv,timer-always-on:
+ type: boolean
+ description:
+ If present, the timer is powered through an always-on power
+ domain, therefore it never loses context.
+
# RISC-V requires 'timebase-frequency' in /cpus, so disallow it here
timebase-frequency: false
--
2.34.1
next prev parent reply other threads:[~2022-07-19 5:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-19 5:47 [PATCH 0/2] Improve CLOCK_EVT_FEAT_C3STOP feature setting Anup Patel
2022-07-19 5:47 ` Anup Patel [this message]
2022-07-19 5:47 ` [PATCH 2/2] clocksource: timer-riscv: Set CLOCK_EVT_FEAT_C3STOP based on DT property Anup Patel
2022-07-19 6:42 ` Samuel Holland
2022-07-21 9:45 ` Anup Patel
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