From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lee Jones Subject: [PATCH v2 07/10] ARM: dts: STiH410-b2260: Identify the UART RTS line Date: Wed, 1 Feb 2017 14:31:42 +0000 Message-ID: <20170201143145.31962-8-lee.jones@linaro.org> References: <20170201143145.31962-1-lee.jones@linaro.org> Return-path: In-Reply-To: <20170201143145.31962-1-lee.jones@linaro.org> Sender: linux-kernel-owner@vger.kernel.org To: gregkh@linuxfoundation.org, jslaby@suse.com, linux-serial@vger.kernel.org, dt@kernel.org, devicetree@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@stlinux.com, patrice.chotard@st.com, Lee Jones List-Id: devicetree@vger.kernel.org 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 --- 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