From: Valentin CARON - foss <valentin.caron@foss.st.com> To: Alexandre TORGUE - foss <alexandre.torgue@foss.st.com> Cc: Rob Herring <robh+dt@kernel.org>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Erwan LE-RAY - foss <erwan.leray@foss.st.com>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, "linux-stm32@st-md-mailman.stormreply.com" <linux-stm32@st-md-mailman.stormreply.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org> Subject: [PATCH] ARM: dts: stm32: fix usart 2 & 3 pinconf to wake up with flow control Date: Thu, 11 Feb 2021 11:07:03 +0000 [thread overview] Message-ID: <20210211110620.31594-1-valentin.caron@foss.st.com> (raw) Modify usart 2 & 3 pins to allow wake up from low power mode while the hardware flow control is activated. UART RTS pin need to stay configure in idle mode to receive characters in order to wake up. Fixes: 842ed898a757 ("ARM: dts: stm32: add usart2, usart3 and uart7 pins in stm32mp15-pinctrl") Signed-off-by: Valentin Caron <valentin.caron@foss.st.com> --- arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi index 7b4249ed1983..060baa8b7e9d 100644 --- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi +++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi @@ -1891,10 +1891,15 @@ usart2_idle_pins_c: usart2-idle-2 { pins1 { pinmux = <STM32_PINMUX('D', 5, ANALOG)>, /* USART2_TX */ - <STM32_PINMUX('D', 4, ANALOG)>, /* USART2_RTS */ <STM32_PINMUX('D', 3, ANALOG)>; /* USART2_CTS_NSS */ }; pins2 { + pinmux = <STM32_PINMUX('D', 4, AF7)>; /* USART2_RTS */ + bias-disable; + drive-push-pull; + slew-rate = <3>; + }; + pins3 { pinmux = <STM32_PINMUX('D', 6, AF7)>; /* USART2_RX */ bias-disable; }; @@ -1940,10 +1945,15 @@ usart3_idle_pins_b: usart3-idle-1 { pins1 { pinmux = <STM32_PINMUX('B', 10, ANALOG)>, /* USART3_TX */ - <STM32_PINMUX('G', 8, ANALOG)>, /* USART3_RTS */ <STM32_PINMUX('I', 10, ANALOG)>; /* USART3_CTS_NSS */ }; pins2 { + pinmux = <STM32_PINMUX('G', 8, AF8)>; /* USART3_RTS */ + bias-disable; + drive-push-pull; + slew-rate = <0>; + }; + pins3 { pinmux = <STM32_PINMUX('B', 12, AF8)>; /* USART3_RX */ bias-disable; }; @@ -1976,10 +1986,15 @@ usart3_idle_pins_c: usart3-idle-2 { pins1 { pinmux = <STM32_PINMUX('B', 10, ANALOG)>, /* USART3_TX */ - <STM32_PINMUX('G', 8, ANALOG)>, /* USART3_RTS */ <STM32_PINMUX('B', 13, ANALOG)>; /* USART3_CTS_NSS */ }; pins2 { + pinmux = <STM32_PINMUX('G', 8, AF8)>; /* USART3_RTS */ + bias-disable; + drive-push-pull; + slew-rate = <0>; + }; + pins3 { pinmux = <STM32_PINMUX('B', 12, AF8)>; /* USART3_RX */ bias-disable; }; -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Valentin CARON - foss <valentin.caron@foss.st.com> To: Alexandre TORGUE - foss <alexandre.torgue@foss.st.com> Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, Erwan LE-RAY - foss <erwan.leray@foss.st.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Rob Herring <robh+dt@kernel.org>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, "linux-stm32@st-md-mailman.stormreply.com" <linux-stm32@st-md-mailman.stormreply.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org> Subject: [PATCH] ARM: dts: stm32: fix usart 2 & 3 pinconf to wake up with flow control Date: Thu, 11 Feb 2021 11:07:03 +0000 [thread overview] Message-ID: <20210211110620.31594-1-valentin.caron@foss.st.com> (raw) Modify usart 2 & 3 pins to allow wake up from low power mode while the hardware flow control is activated. UART RTS pin need to stay configure in idle mode to receive characters in order to wake up. Fixes: 842ed898a757 ("ARM: dts: stm32: add usart2, usart3 and uart7 pins in stm32mp15-pinctrl") Signed-off-by: Valentin Caron <valentin.caron@foss.st.com> --- arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi index 7b4249ed1983..060baa8b7e9d 100644 --- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi +++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi @@ -1891,10 +1891,15 @@ usart2_idle_pins_c: usart2-idle-2 { pins1 { pinmux = <STM32_PINMUX('D', 5, ANALOG)>, /* USART2_TX */ - <STM32_PINMUX('D', 4, ANALOG)>, /* USART2_RTS */ <STM32_PINMUX('D', 3, ANALOG)>; /* USART2_CTS_NSS */ }; pins2 { + pinmux = <STM32_PINMUX('D', 4, AF7)>; /* USART2_RTS */ + bias-disable; + drive-push-pull; + slew-rate = <3>; + }; + pins3 { pinmux = <STM32_PINMUX('D', 6, AF7)>; /* USART2_RX */ bias-disable; }; @@ -1940,10 +1945,15 @@ usart3_idle_pins_b: usart3-idle-1 { pins1 { pinmux = <STM32_PINMUX('B', 10, ANALOG)>, /* USART3_TX */ - <STM32_PINMUX('G', 8, ANALOG)>, /* USART3_RTS */ <STM32_PINMUX('I', 10, ANALOG)>; /* USART3_CTS_NSS */ }; pins2 { + pinmux = <STM32_PINMUX('G', 8, AF8)>; /* USART3_RTS */ + bias-disable; + drive-push-pull; + slew-rate = <0>; + }; + pins3 { pinmux = <STM32_PINMUX('B', 12, AF8)>; /* USART3_RX */ bias-disable; }; @@ -1976,10 +1986,15 @@ usart3_idle_pins_c: usart3-idle-2 { pins1 { pinmux = <STM32_PINMUX('B', 10, ANALOG)>, /* USART3_TX */ - <STM32_PINMUX('G', 8, ANALOG)>, /* USART3_RTS */ <STM32_PINMUX('B', 13, ANALOG)>; /* USART3_CTS_NSS */ }; pins2 { + pinmux = <STM32_PINMUX('G', 8, AF8)>; /* USART3_RTS */ + bias-disable; + drive-push-pull; + slew-rate = <0>; + }; + pins3 { pinmux = <STM32_PINMUX('B', 12, AF8)>; /* USART3_RX */ bias-disable; }; -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-02-11 11:38 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-02-11 11:07 Valentin CARON - foss [this message] 2021-02-11 11:07 ` [PATCH] ARM: dts: stm32: fix usart 2 & 3 pinconf to wake up with flow control Valentin CARON - foss 2021-03-11 11:08 ` Alexandre TORGUE 2021-03-11 11:08 ` Alexandre TORGUE
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