From a3d209dfeedbc5ae185a86123c6f1879f84314a2 Mon Sep 17 00:00:00 2001
From: Alexandre Bourdiol <alexandre.bourdiol@st.com>
Date: Fri, 30 Apr 2021 18:03:13 +0200
Subject: [PATCH] boards: stm32373c_eval: Use dts for clocks configuration

Convert board to use of device tree for clocks configuration.

Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>
---
 boards/arm/stm32373c_eval/stm32373c_eval.dts  | 20 +++++++++++++++++++
 .../stm32373c_eval/stm32373c_eval_defconfig   | 17 +---------------
 2 files changed, 21 insertions(+), 16 deletions(-)

diff --git a/boards/arm/stm32373c_eval/stm32373c_eval.dts b/boards/arm/stm32373c_eval/stm32373c_eval.dts
index 09436011e59..fa03fae4ce8 100644
--- a/boards/arm/stm32373c_eval/stm32373c_eval.dts
+++ b/boards/arm/stm32373c_eval/stm32373c_eval.dts
@@ -41,6 +41,26 @@
 	};
 };
 
+&clk_hse {
+	clock-frequency = <DT_FREQ_M(8)>;
+	status = "okay";
+};
+
+&pll {
+	prediv = <1>;
+	mul = <9>;
+	clocks = <&clk_hse>;
+	status = "okay";
+};
+
+&rcc {
+	clocks = <&pll>;
+	clock-frequency = <DT_FREQ_M(72)>;
+	ahb-prescaler = <1>;
+	apb1-prescaler = <2>;
+	apb2-prescaler = <2>;
+};
+
 &usart2 {
 	pinctrl-0 = <&usart2_tx_pd5 &usart2_rx_pd6>;
 	current-speed = <115200>;
diff --git a/boards/arm/stm32373c_eval/stm32373c_eval_defconfig b/boards/arm/stm32373c_eval/stm32373c_eval_defconfig
index a2a72e16722..dad51767bb5 100644
--- a/boards/arm/stm32373c_eval/stm32373c_eval_defconfig
+++ b/boards/arm/stm32373c_eval/stm32373c_eval_defconfig
@@ -15,9 +15,6 @@ CONFIG_ARM_MPU=y
 # Enable HW stack protection
 CONFIG_HW_STACK_PROTECTION=y
 
-# General Kernel Options
-CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=72000000
-
 # Serial Drivers
 CONFIG_SERIAL=y
 CONFIG_UART_INTERRUPT_DRIVEN=y
@@ -31,17 +28,5 @@ CONFIG_PINMUX=y
 # GPIO Controller
 CONFIG_GPIO=y
 
-# Clock configuration
+# Enable Clocks
 CONFIG_CLOCK_CONTROL=y
-# SYSCLK selection
-CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y
-# HSE configuration
-CONFIG_CLOCK_STM32_HSE_CLOCK=8000000
-# PLL configuration
-CONFIG_CLOCK_STM32_PLL_SRC_HSE=y
-# produce 72MHz clock at PLL output
-CONFIG_CLOCK_STM32_PLL_PREDIV=1
-CONFIG_CLOCK_STM32_PLL_MULTIPLIER=9
-CONFIG_CLOCK_STM32_AHB_PRESCALER=1
-CONFIG_CLOCK_STM32_APB1_PRESCALER=2
-CONFIG_CLOCK_STM32_APB2_PRESCALER=2