From d4b69847a823335985a342126f4b50bfdf9ee2d7 Mon Sep 17 00:00:00 2001
From: Neil Armstrong <narmstrong@baylibre.com>
Date: Tue, 4 Oct 2016 14:11:50 +0200
Subject: [PATCH] stm32l4: add pinconf for USARTs

Add the pin configuration of the USARTs.

Change-Id: Idf7a18b6eab95c61870ad4850c9eafb1fdcab03d
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
---
 arch/arm/soc/st_stm32/stm32l4/soc_pinmux.c | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.c b/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.c
index 6d860a76f2b..f6b796cb4ab 100644
--- a/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.c
+++ b/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.c
@@ -24,10 +24,48 @@
 #include <pinmux/stm32/pinmux_stm32.h>
 #include <drivers/clock_control/stm32_clock_control.h>
 
+static const stm32_pin_func_t pin_pa9_funcs[] = {
+	[STM32L4X_PINMUX_FUNC_PA9_USART1_TX - 1] =
+		STM32L4X_PIN_CONFIG_PUSH_PULL,
+};
+
+static const stm32_pin_func_t pin_pa10_funcs[] = {
+	[STM32L4X_PINMUX_FUNC_PA10_USART1_RX - 1] =
+		STM32L4X_PIN_CONFIG_BIAS_HIGH_IMPEDANCE,
+};
+
+static const stm32_pin_func_t pin_pa2_funcs[] = {
+	[STM32L4X_PINMUX_FUNC_PA2_USART2_TX - 1] =
+		STM32L4X_PIN_CONFIG_PUSH_PULL,
+};
+
+static const stm32_pin_func_t pin_pa3_funcs[] = {
+	[STM32L4X_PINMUX_FUNC_PA3_USART2_RX - 1] =
+		STM32L4X_PIN_CONFIG_BIAS_HIGH_IMPEDANCE,
+};
+
+static const stm32_pin_func_t pin_pb10_funcs[] = {
+	[STM32L4X_PINMUX_FUNC_PB10_USART3_TX - 1] =
+		STM32L4X_PIN_CONFIG_PUSH_PULL,
+};
+
+static const stm32_pin_func_t pin_pb11_funcs[] = {
+	[STM32L4X_PINMUX_FUNC_PB11_USART3_RX - 1] =
+		STM32L4X_PIN_CONFIG_BIAS_HIGH_IMPEDANCE,
+};
+
 /**
  * @brief pin configuration
  */
 static const struct stm32_pinmux_conf pins[] = {
+	STM32_PIN_CONF(STM32_PIN_PA2, pin_pa2_funcs),
+	STM32_PIN_CONF(STM32_PIN_PA3, pin_pa3_funcs),
+	STM32_PIN_CONF(STM32_PIN_PA9, pin_pa9_funcs),
+	STM32_PIN_CONF(STM32_PIN_PA10, pin_pa10_funcs),
+	STM32_PIN_CONF(STM32_PIN_PB6, pin_pb6_funcs),
+	STM32_PIN_CONF(STM32_PIN_PB7, pin_pb7_funcs),
+	STM32_PIN_CONF(STM32_PIN_PB10, pin_pb10_funcs),
+	STM32_PIN_CONF(STM32_PIN_PB11, pin_pb11_funcs),
 };
 
 int stm32_get_pin_config(int pin, int func)