From mboxrd@z Thu Jan 1 00:00:00 1970 From: Erwan Le Ray Subject: [PATCH v3 07/10] ARM: dts: stm32: update uart4 pin configurations for low power Date: Thu, 13 Jun 2019 15:49:57 +0200 Message-ID: <1560433800-12255-8-git-send-email-erwan.leray@st.com> References: <1560433800-12255-1-git-send-email-erwan.leray@st.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1560433800-12255-1-git-send-email-erwan.leray@st.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Greg Kroah-Hartman , Jiri Slaby , Maxime Coquelin , Alexandre Torgue , Rob Herring , Mark Rutland Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Erwan Le Ray , linux-serial@vger.kernel.org, Bich Hemon , Fabrice Gasnier , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org List-Id: linux-serial@vger.kernel.org Currently, pinctrl states defines only one "sleep" configuration for pins, no matter the possible uart low power modes (Rx pin always kept active). Sleep pin configuration is refined for low power modes: - "sleep" (no wakeup & console suspend enabled): put pins in analog state to optimize power - "idle" (wakeup capability): keep Rx pin in alternate function - "default" state remains untouched, to be used while the UART is active or in case the no_console_suspend mode is enabled Signed-off-by: Bich Hemon Signed-off-by: Erwan Le Ray diff --git a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi index 85c417d..2e1ab1b 100644 --- a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi +++ b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi @@ -599,6 +599,23 @@ bias-disable; }; }; + + uart4_idle_pins_a: uart4-idle-0 { + pins1 { + pinmux = ; /* UART4_TX */ + }; + pins2 { + pinmux = ; /* UART4_RX */ + bias-disable; + }; + }; + + uart4_sleep_pins_a: uart4-sleep-0 { + pins { + pinmux = , /* UART4_TX */ + ; /* UART4_RX */ + }; + }; }; pinctrl_z: pin-controller-z@54004000 { -- 1.9.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21394C31E45 for ; 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Thu, 13 Jun 2019 13:50:21 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas23.st.com [10.75.90.46]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 3C5A02BC0; Thu, 13 Jun 2019 13:50:21 +0000 (GMT) Received: from SAFEX1HUBCAS22.st.com (10.75.90.93) by SAFEX1HUBCAS23.st.com (10.75.90.46) with Microsoft SMTP Server (TLS) id 14.3.439.0; Thu, 13 Jun 2019 15:50:20 +0200 Received: from localhost (10.201.23.31) by Webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.439.0; Thu, 13 Jun 2019 15:50:20 +0200 From: Erwan Le Ray To: Greg Kroah-Hartman , Jiri Slaby , Maxime Coquelin , "Alexandre Torgue" , Rob Herring , "Mark Rutland" Subject: [PATCH v3 07/10] ARM: dts: stm32: update uart4 pin configurations for low power Date: Thu, 13 Jun 2019 15:49:57 +0200 Message-ID: <1560433800-12255-8-git-send-email-erwan.leray@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1560433800-12255-1-git-send-email-erwan.leray@st.com> References: <1560433800-12255-1-git-send-email-erwan.leray@st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.23.31] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-06-13_08:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190613_065027_655973_346A7C6F X-CRM114-Status: GOOD ( 11.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Erwan Le Ray , linux-serial@vger.kernel.org, Bich Hemon , Fabrice Gasnier , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Currently, pinctrl states defines only one "sleep" configuration for pins, no matter the possible uart low power modes (Rx pin always kept active). Sleep pin configuration is refined for low power modes: - "sleep" (no wakeup & console suspend enabled): put pins in analog state to optimize power - "idle" (wakeup capability): keep Rx pin in alternate function - "default" state remains untouched, to be used while the UART is active or in case the no_console_suspend mode is enabled Signed-off-by: Bich Hemon Signed-off-by: Erwan Le Ray diff --git a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi index 85c417d..2e1ab1b 100644 --- a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi +++ b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi @@ -599,6 +599,23 @@ bias-disable; }; }; + + uart4_idle_pins_a: uart4-idle-0 { + pins1 { + pinmux = ; /* UART4_TX */ + }; + pins2 { + pinmux = ; /* UART4_RX */ + bias-disable; + }; + }; + + uart4_sleep_pins_a: uart4-sleep-0 { + pins { + pinmux = , /* UART4_TX */ + ; /* UART4_RX */ + }; + }; }; pinctrl_z: pin-controller-z@54004000 { -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37A7FC31E45 for ; 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Thu, 13 Jun 2019 15:50:20 +0200 Received: from localhost (10.201.23.31) by Webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.439.0; Thu, 13 Jun 2019 15:50:20 +0200 From: Erwan Le Ray To: Greg Kroah-Hartman , Jiri Slaby , Maxime Coquelin , "Alexandre Torgue" , Rob Herring , "Mark Rutland" CC: , , , , , Erwan Le Ray , "Fabrice Gasnier" , Bich Hemon Subject: [PATCH v3 07/10] ARM: dts: stm32: update uart4 pin configurations for low power Date: Thu, 13 Jun 2019 15:49:57 +0200 Message-ID: <1560433800-12255-8-git-send-email-erwan.leray@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1560433800-12255-1-git-send-email-erwan.leray@st.com> References: <1560433800-12255-1-git-send-email-erwan.leray@st.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.201.23.31] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-06-13_08:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently, pinctrl states defines only one "sleep" configuration for pins, no matter the possible uart low power modes (Rx pin always kept active). Sleep pin configuration is refined for low power modes: - "sleep" (no wakeup & console suspend enabled): put pins in analog state to optimize power - "idle" (wakeup capability): keep Rx pin in alternate function - "default" state remains untouched, to be used while the UART is active or in case the no_console_suspend mode is enabled Signed-off-by: Bich Hemon Signed-off-by: Erwan Le Ray diff --git a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi index 85c417d..2e1ab1b 100644 --- a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi +++ b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi @@ -599,6 +599,23 @@ bias-disable; }; }; + + uart4_idle_pins_a: uart4-idle-0 { + pins1 { + pinmux = ; /* UART4_TX */ + }; + pins2 { + pinmux = ; /* UART4_RX */ + bias-disable; + }; + }; + + uart4_sleep_pins_a: uart4-sleep-0 { + pins { + pinmux = , /* UART4_TX */ + ; /* UART4_RX */ + }; + }; }; pinctrl_z: pin-controller-z@54004000 { -- 1.9.1