linux-kernel - [PATCH v2 09/15] arm64: dts: meson: a1: introduce UART

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Date:   Thu, 24 Aug 2023 00:36:24 +0300
From:   Dmitry Rokosov <ddrokosov@...rdevices.ru>
To:     <neil.armstrong@...aro.org>, <jbrunet@...libre.com>,
        <mturquette@...libre.com>, <sboyd@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <khilman@...libre.com>, <martin.blumenstingl@...glemail.com>,
        <conor+dt@...nel.org>
CC:     <kernel@...rdevices.ru>, <sdfw_system_team@...rdevices.ru>,
        <rockosov@...il.com>, <linux-amlogic@...ts.infradead.org>,
        <linux-clk@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Oleg Lyovin <ovlevin@...rdevices.ru>,
        Dmitry Rokosov <ddrokosov@...rdevices.ru>
Subject: [PATCH v2 09/15] arm64: dts: meson: a1: introduce UART_AO mux definitions

From: Oleg Lyovin <ovlevin@...rdevices.ru>

The Amlogic A1 has a UART_AO port, which can be used, for example, for
BT HCI H4 connection.

This patch adds mux definitions for it.

Signed-off-by: Oleg Lyovin <ovlevin@...rdevices.ru>
Signed-off-by: Dmitry Rokosov <ddrokosov@...rdevices.ru>
---
 arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index 8d479bc8e677..1cc34fe003af 100644
--- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
@@ -126,6 +126,22 @@ gpio: bank@400 {
 					gpio-ranges = <&periphs_pinctrl 0 0 62>;
 				};
 
+				uart_a_pins: uart-a {
+					mux {
+						groups = "uart_a_tx",
+							 "uart_a_rx";
+						function = "uart_a";
+					};
+				};
+
+				uart_a_cts_rts_pins: uart-a-cts-rts {
+					mux {
+						groups = "uart_a_cts",
+							 "uart_a_rts";
+						function = "uart_a";
+						bias-pull-down;
+					};
+				};
 			};
 
 			gpio_intc: interrupt-controller@440 {
-- 
2.36.0