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[PATCH v2 07/10] ARM: dts: STiH410-b2260: Identify the UART RTS line

From Lee Jones <lee.jones@linaro.org>
Newsgroups linux.kernel
Subject [PATCH v2 07/10] ARM: dts: STiH410-b2260: Identify the UART RTS line
Date 2017-01-27 18:40 +0100
Message-ID <t4iFe-74B-77@gated-at.bofh.it> (permalink)
References <t4ivv-70N-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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When hardware flow-control is disabled, manual toggling of the UART's
reset line (RTS) using userland applications (e.g. stty) is not
possible, since the ASC IP does not provide this functionality in the
same was as some other IPs do.  Thus, we have to do this manually.
This patch configures the UART RTS line as a GPIO for manipulation
within the UART driver when HW flow-control is not enabled.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 arch/arm/boot/dts/stih410-b2260.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/stih410-b2260.dts b/arch/arm/boot/dts/stih410-b2260.dts
index 06b0696..fa16aba 100644
--- a/arch/arm/boot/dts/stih410-b2260.dts
+++ b/arch/arm/boot/dts/stih410-b2260.dts
@@ -63,6 +63,7 @@
 		uart0: serial@9830000 {
 			label = "LS-UART0";
 			status = "okay";
+			rts-gpios = <&pio17 3 GPIO_ACTIVE_LOW>;
 		};
 
 		/* Low speed expansion connector */
-- 
2.9.3

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[PATCH v2 00/10] serial: st-asc: Allow handling of RTS line Lee Jones <lee.jones@linaro.org> - 2017-01-27 18:30 +0100
  [PATCH v2 03/10] serial: st-asc: Read in all Pinctrl states Lee Jones <lee.jones@linaro.org> - 2017-01-27 18:30 +0100
  [PATCH v2 06/10] dt-bindings: serial: Update 'uart-has-rtscts' description Lee Jones <lee.jones@linaro.org> - 2017-01-27 18:30 +0100
  [PATCH v2 02/10] serial: st-asc: Provide RTS functionality Lee Jones <lee.jones@linaro.org> - 2017-01-27 18:30 +0100
  [PATCH v2 09/10] ARM: dts: STiH407-family: Use new Pinctrl groups Lee Jones <lee.jones@linaro.org> - 2017-01-27 18:40 +0100
    Re: [PATCH v2 09/10] ARM: dts: STiH407-family: Use new Pinctrl groups Patrice CHOTARD <patrice.chotard@st.com> - 2017-01-30 12:10 +0100
  [PATCH v2 04/10] serial: st-asc: (De)Register GPIOD and swap Pinctrl profiles Lee Jones <lee.jones@linaro.org> - 2017-01-27 18:40 +0100
  [PATCH v2 10/10] ARM: dts: STiH410-b2260: Enable HW flow-control Lee Jones <lee.jones@linaro.org> - 2017-01-27 18:40 +0100
  [PATCH v2 08/10] ARM: dts: STiH407-pinctrl: Add Pinctrl group for HW flow-control Lee Jones <lee.jones@linaro.org> - 2017-01-27 18:40 +0100
  [PATCH v2 05/10] serial: st-asc: Use generic DT binding for announcing RTS/CTS lines Lee Jones <lee.jones@linaro.org> - 2017-01-27 18:40 +0100
  [PATCH v2 01/10] serial: st-asc: Ignore the parity error bit if 8-bit mode is enabled Lee Jones <lee.jones@linaro.org> - 2017-01-27 18:40 +0100
  [PATCH v2 07/10] ARM: dts: STiH410-b2260: Identify the UART RTS line Lee Jones <lee.jones@linaro.org> - 2017-01-27 18:40 +0100

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