From: Erwan Le Ray <erwan.leray@foss.st.com> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Jiri Slaby <jslaby@suse.com>, Rob Herring <robh+dt@kernel.org>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre Torgue <alexandre.torgue@foss.st.com> Cc: <linux-serial@vger.kernel.org>, <devicetree@vger.kernel.org>, <linux-stm32@st-md-mailman.stormreply.com>, <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, Erwan Le Ray <erwan.leray@foss.st.com>, Fabrice Gasnier <fabrice.gasnier@foss.st.com>, Valentin Caron <valentin.caron@foss.st.com> Subject: [PATCH v2 5/8] dt-bindings: serial: stm32: update rts-gpios and cts-gpios Date: Wed, 6 Jan 2021 17:22:00 +0100 [thread overview] Message-ID: <20210106162203.28854-6-erwan.leray@foss.st.com> (raw) In-Reply-To: <20210106162203.28854-1-erwan.leray@foss.st.com> Update rts-gpios and cts-gpios: - remove max-items as already defined in serial.yaml - add a note describing rts-gpios and cts-gpios usage with stm32 Document the use of cts-gpios and rts-gpios for flow control in STM32 UART controller. These properties can be used instead of 'uart-has-rtscts' or 'st,hw-flow-ctrl' (deprecated) for making use of any gpio pins for flow control instead of dedicated pins. It should be noted that both cts-gpios/rts-gpios and 'uart-has-rtscts' or 'st,hw-flow-ctrl' (deprecated) properties cannot co-exist in a design. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com> diff --git a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml index 06d5f251ec88..8631678283f9 100644 --- a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml +++ b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml @@ -50,11 +50,14 @@ properties: minItems: 1 maxItems: 2 - cts-gpios: - maxItems: 1 - - rts-gpios: - maxItems: 1 +# cts-gpios and rts-gpios properties can be used instead of 'uart-has-rtscts' +# or 'st,hw-flow-ctrl' (deprecated) for making use of any gpio pins for flow +# control instead of dedicated pins. +# +# It should be noted that both cts-gpios/rts-gpios and 'uart-has-rtscts' or +# 'st,hw-flow-ctrl' (deprecated) properties cannot co-exist in a design. + cts-gpios: true + rts-gpios: true wakeup-source: true -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Erwan Le Ray <erwan.leray@foss.st.com> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Jiri Slaby <jslaby@suse.com>, Rob Herring <robh+dt@kernel.org>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre Torgue <alexandre.torgue@foss.st.com> Cc: devicetree@vger.kernel.org, Valentin Caron <valentin.caron@foss.st.com>, Erwan Le Ray <erwan.leray@foss.st.com>, linux-kernel@vger.kernel.org, Fabrice Gasnier <fabrice.gasnier@foss.st.com>, linux-serial@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 5/8] dt-bindings: serial: stm32: update rts-gpios and cts-gpios Date: Wed, 6 Jan 2021 17:22:00 +0100 [thread overview] Message-ID: <20210106162203.28854-6-erwan.leray@foss.st.com> (raw) In-Reply-To: <20210106162203.28854-1-erwan.leray@foss.st.com> Update rts-gpios and cts-gpios: - remove max-items as already defined in serial.yaml - add a note describing rts-gpios and cts-gpios usage with stm32 Document the use of cts-gpios and rts-gpios for flow control in STM32 UART controller. These properties can be used instead of 'uart-has-rtscts' or 'st,hw-flow-ctrl' (deprecated) for making use of any gpio pins for flow control instead of dedicated pins. It should be noted that both cts-gpios/rts-gpios and 'uart-has-rtscts' or 'st,hw-flow-ctrl' (deprecated) properties cannot co-exist in a design. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com> diff --git a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml index 06d5f251ec88..8631678283f9 100644 --- a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml +++ b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml @@ -50,11 +50,14 @@ properties: minItems: 1 maxItems: 2 - cts-gpios: - maxItems: 1 - - rts-gpios: - maxItems: 1 +# cts-gpios and rts-gpios properties can be used instead of 'uart-has-rtscts' +# or 'st,hw-flow-ctrl' (deprecated) for making use of any gpio pins for flow +# control instead of dedicated pins. +# +# It should be noted that both cts-gpios/rts-gpios and 'uart-has-rtscts' or +# 'st,hw-flow-ctrl' (deprecated) properties cannot co-exist in a design. + cts-gpios: true + rts-gpios: true wakeup-source: true -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-06 16:24 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-06 16:21 [PATCH 0/7] STM32 uart cleanup and improvements Erwan Le Ray 2021-01-06 16:21 ` Erwan Le Ray 2021-01-06 16:21 ` [PATCH v2 1/8] serial: stm32: fix DMA initialization error handling Erwan Le Ray 2021-01-06 16:21 ` Erwan Le Ray 2021-01-06 16:21 ` [PATCH v2 2/8] serial: stm32: fix code cleaning warnings and checks Erwan Le Ray 2021-01-06 16:21 ` Erwan Le Ray 2021-01-11 9:58 ` Jiri Slaby 2021-01-11 9:58 ` Jiri Slaby 2021-01-12 10:02 ` Erwan LE RAY 2021-01-12 10:02 ` Erwan LE RAY 2021-01-12 10:24 ` Greg Kroah-Hartman 2021-01-12 10:24 ` Greg Kroah-Hartman 2021-01-06 16:21 ` [PATCH v2 3/8] serial: stm32: add "_usart" prefix in functions name Erwan Le Ray 2021-01-06 16:21 ` Erwan Le Ray 2021-01-06 16:21 ` [PATCH v2 4/8] serial: stm32: add author Erwan Le Ray 2021-01-06 16:21 ` Erwan Le Ray 2021-01-11 9:59 ` Jiri Slaby 2021-01-11 9:59 ` Jiri Slaby 2021-01-06 16:22 ` Erwan Le Ray [this message] 2021-01-06 16:22 ` [PATCH v2 5/8] dt-bindings: serial: stm32: update rts-gpios and cts-gpios Erwan Le Ray 2021-01-06 16:22 ` [PATCH v2 6/8] serial: stm32: update conflicting RTS/CTS config comment Erwan Le Ray 2021-01-06 16:22 ` Erwan Le Ray 2021-01-06 16:22 ` [PATCH v2 7/8] serial: stm32: clean probe and remove port deinit Erwan Le Ray 2021-01-06 16:22 ` Erwan Le Ray 2021-01-06 16:22 ` [PATCH v2 8/8] serial: stm32: update transmission complete error message in shutdown Erwan Le Ray 2021-01-06 16:22 ` Erwan Le Ray
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