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Mon, 29 Jul 2024 01:01:13 -0700 (PDT) Received: from blmsp.fritz.box ([2001:4091:a245:8609:c1c4:a4f8:94c8:31f2]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-42819d9a007sm45452635e9.1.2024.07.29.01.01.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Jul 2024 01:01:13 -0700 (PDT) From: Markus Schneider-Pargmann To: Nishanth Menon , Tero Kristo , Santosh Shilimkar , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vignesh Raghavendra Cc: Vibhore Vardhan , Kevin Hilman , Dhruva Gole , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Markus Schneider-Pargmann Subject: [PATCH v2 1/6] dt-bindings: ti, sci: Add property for partial-io-wakeup-sources Date: Mon, 29 Jul 2024 10:00:56 +0200 Message-ID: <20240729080101.3859701-2-msp@baylibre.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240729080101.3859701-1-msp@baylibre.com> References: <20240729080101.3859701-1-msp@baylibre.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Partial-IO is a very low power mode in which nearly everything is powered off. Only pins of a few hardware units are kept sensitive and are capable to wakeup the SoC. The device nodes are marked as 'wakeup-source' but so are a lot of other device nodes as well that are not able to do a wakeup from Partial-IO. This creates the need to describe the device nodes that are capable of wakeup from Partial-IO. This patch adds a property with a list of these nodes defining which devices can be used as wakeup sources in Partial-IO. Signed-off-by: Markus Schneider-Pargmann --- .../devicetree/bindings/arm/keystone/ti,sci.yaml | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml b/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml index 25a2b42105e5..7d6152710573 100644 --- a/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml +++ b/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml @@ -61,6 +61,19 @@ properties: mboxes: minItems: 2 + ti,partial-io-wakeup-sources: + $ref: /schemas/types.yaml#/definitions/phandle-array + description: | + Partial-IO is a low power mode in which nearly everything is powered + off. Only pins associated with a few hardware units are capable to + wakeup the system from this mode. It is a very small subset of all + device nodes that have the 'wakeup-source' property. + ti,partial-io-wakeup-sources is the list of device nodes that can + wakeup the system from Partial-IO. + + This low power mode depends on the capabilities of the SoC and + the firmware. + ti,host-id: $ref: /schemas/types.yaml#/definitions/uint32 description: | From patchwork Mon Jul 29 08:00:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Schneider-Pargmann X-Patchwork-Id: 1965889 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.a=rsa-sha256 header.s=20230601 header.b=Qy9hhOBt; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=139.178.88.99; 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Any activity will wakeup the SoC in that case. Signed-off-by: Markus Schneider-Pargmann --- arch/arm64/boot/dts/ti/k3-pinctrl.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-pinctrl.h b/arch/arm64/boot/dts/ti/k3-pinctrl.h index 22b8d73cfd32..dd4d53e8420a 100644 --- a/arch/arm64/boot/dts/ti/k3-pinctrl.h +++ b/arch/arm64/boot/dts/ti/k3-pinctrl.h @@ -12,6 +12,7 @@ #define PULLTYPESEL_SHIFT (17) #define RXACTIVE_SHIFT (18) #define DEBOUNCE_SHIFT (11) +#define WKUP_EN_SHIFT (29) #define PULL_DISABLE (1 << PULLUDEN_SHIFT) #define PULL_ENABLE (0 << PULLUDEN_SHIFT) @@ -38,6 +39,8 @@ #define PIN_DEBOUNCE_CONF5 (5 << DEBOUNCE_SHIFT) #define PIN_DEBOUNCE_CONF6 (6 << DEBOUNCE_SHIFT) +#define WKUP_EN (1 << WKUP_EN_SHIFT) + /* Default mux configuration for gpio-ranges to use with pinctrl */ #define PIN_GPIO_RANGE_IOPAD (PIN_INPUT | 7)