boards: stm32l496g_disco: Use dts for clocks configuration

Convert board to use of device tree for clocks configuration. Signed-off-by: Alexandre Bourdiol <[email protected]>
zephyrproject-rtos · Apr 30, 2021 · 3e1632e · 3e1632e
1 parent dc32936
commit 3e1632e
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Showing 2 changed files with 23 additions and 16 deletions.
diff --git a/boards/arm/stm32l496g_disco/stm32l496g_disco.dts b/boards/arm/stm32l496g_disco/stm32l496g_disco.dts
@@ -63,6 +63,28 @@
 
 };
 
+&clk_hsi {
+ status = "okay";
+};
+
+&pll {
+ div-m = <1>;
+ mul-n = <20>;
+ div-p = <7>;
+ div-q = <2>;
+ div-r = <4>;
+ clocks = <&clk_hsi>;
+ status = "okay";
+};
+
+&rcc {
+ clocks = <&pll>;
+ clock-frequency = <DT_FREQ_M(80)>;
+ ahb-prescaler = <1>;
+ apb1-prescaler = <1>;
+ apb2-prescaler = <1>;
+};
+
 &usart1 {
  pinctrl-0 = <&usart1_tx_pb6 &usart1_rx_pg10>;
  current-speed = <115200>;

diff --git a/boards/arm/stm32l496g_disco/stm32l496g_disco_defconfig b/boards/arm/stm32l496g_disco/stm32l496g_disco_defconfig
@@ -2,8 +2,6 @@
 
 CONFIG_SOC_SERIES_STM32L4X=y
 CONFIG_SOC_STM32L496XX=y
-# 80MHz system clock
-CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=80000000
 
 # Enable MPU
 CONFIG_ARM_MPU=y
@@ -20,21 +18,8 @@ CONFIG_PINMUX=y
 # enable GPIOs
 CONFIG_GPIO=y
 
-# clock configuration
+# Enable Clocks
 CONFIG_CLOCK_CONTROL=y
-# SYSCLK selection
-CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y
-# PLL configuration
-CONFIG_CLOCK_STM32_PLL_SRC_HSI=y
-# produce 80MHz clock at PLL output
-CONFIG_CLOCK_STM32_PLL_M_DIVISOR=1
-CONFIG_CLOCK_STM32_PLL_N_MULTIPLIER=20
-CONFIG_CLOCK_STM32_PLL_P_DIVISOR=7
-CONFIG_CLOCK_STM32_PLL_Q_DIVISOR=2
-CONFIG_CLOCK_STM32_PLL_R_DIVISOR=4
-CONFIG_CLOCK_STM32_AHB_PRESCALER=1
-CONFIG_CLOCK_STM32_APB1_PRESCALER=1
-CONFIG_CLOCK_STM32_APB2_PRESCALER=1
 
 # console
 CONFIG_CONSOLE=y