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Mon, 24 Aug 2026 07:10:12 -0400 (EDT) From: Jiaxing Hu To: tomeu@tomeuvizoso.net, heiko@sntech.de, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, ulfh@kernel.org, p.zabel@pengutronix.de, ogabbay@kernel.org, zhangqing@rock-chips.com Cc: royalnet026@gmail.com, u.kleine-koenig@baylibre.com, chaoyi.chen@rock-chips.com, diederik@cknow-tech.com, alchark@flipper.net, dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, iommu@lists.linux.dev, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jiaxing Hu Subject: [PATCH v9 06/13] dt-bindings: power: rockchip: allow resets in a power domain node Date: Mon, 24 Aug 2026 23:08:55 +1200 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Some domains do not come up in a usable state on their own and need their resets cycled once power is on. The RK3576 NPU domains are one case: without it the first access after power-on takes an async SError. Signed-off-by: Jiaxing Hu --- .../bindings/power/rockchip,power-controller.yaml | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml index b41db576f..83741f048 100644 --- a/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml +++ b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml @@ -136,6 +136,13 @@ $defs: A number of phandles to clocks that need to be enabled while power domain switches state. + resets: + maxItems: 1 + description: + A phandle to a reset that needs to be cycled once the power domain has + been switched on, for domains whose logic does not come up in a usable + state by itself. + domain-supply: description: domain regulator supply. @@ -216,6 +223,7 @@ examples: reg = ; clocks = <&cru ACLK_IEP>, <&cru HCLK_IEP>; + resets = <&cru SRST_A_IEP>; pm_qos = <&qos_iep>; #power-domain-cells = <0>; }; -- 2.43.0