echoplayer: replace stm32 clock init with target specific init

commit 65b97917ca9c14dbc7d92db6e2bb04106a09d248
Author: Aidan MacDonald <[email protected]>
Date:   Fri Jan 16 15:31:18 2026 +0000

    echoplayer: replace stm32 clock init with target specific init
    
    Change-Id: Ib858f95b4cedba261ea669d3339ea1497e970982

diff --git a/firmware/target/arm/stm32/clock-stm32h7.h b/firmware/target/arm/stm32/clock-stm32h7.h
index e6dbd44c53..a84b09e519 100644
--- a/firmware/target/arm/stm32/clock-stm32h7.h
+++ b/firmware/target/arm/stm32/clock-stm32h7.h
@@ -36,21 +36,6 @@ struct stm32_clock
     uint32_t lpen_bit;
 };
 
-/*
- * Implemented by the target to initialize all oscillators,
- * system, CPU, and bus clocks that need to be enabled from
- * early boot.
- */
-void stm_target_clock_init(void) INIT_ATTR;
-
-/*
- * Called by system_init() to setup target clocks.
- */
-static inline void stm_clock_init(void)
-{
-    stm_target_clock_init();
-}
-
 /*
  * Enables a clock by setting its enable bits in the RCC.
  */
diff --git a/firmware/target/arm/stm32/echoplayer/clock-echoplayer.c b/firmware/target/arm/stm32/echoplayer/clock-echoplayer.c
index 2ff829bfd8..d42c12ae5f 100644
--- a/firmware/target/arm/stm32/echoplayer/clock-echoplayer.c
+++ b/firmware/target/arm/stm32/echoplayer/clock-echoplayer.c
@@ -32,14 +32,14 @@
 /* Flag to use VOS0 */
 #define STM32H743_USE_VOS0      (CPU_FREQ > 400000000)
 
-static void init_hse(void)
+INIT_ATTR static void init_hse(void)
 {
     reg_writef(RCC_CR, HSEON(1));
 
     while (!reg_readf(RCC_CR, HSERDY));
 }
 
-static void init_pll(void)
+INIT_ATTR static void init_pll(void)
 {
     /* For simplicity, PLL parameters are hardcoded */
     _Static_assert(STM32_HSE_FREQ == 24000000,
@@ -97,7 +97,7 @@ static void init_pll(void)
     while (!reg_readf(RCC_CR, PLL3RDY));
 }
 
-static void init_vos(void)
+INIT_ATTR static void init_vos(void)
 {
     reg_writef(PWR_D3CR, VOS_V(VOS1));
     while (!reg_readf(PWR_D3CR, VOSRDY));
@@ -114,7 +114,7 @@ static void init_vos(void)
     }
 }
 
-static void init_system_clock(void)
+INIT_ATTR static void init_system_clock(void)
 {
     /* Enable HCLK /2 divider (CPU is at 480 MHz, HCLK limit is 240 MHz) */
     reg_writef(RCC_D1CFGR, HPRE(8));
@@ -134,7 +134,7 @@ static void init_system_clock(void)
     while (reg_readf(FLASH_ACR, LATENCY) != 4);
 }
 
-static void init_lse(void)
+INIT_ATTR static void init_lse(void)
 {
     /*
      * Skip if LSE and RTC are already enabled.
@@ -161,7 +161,7 @@ static void init_lse(void)
     reg_writef(PWR_CR1, DBP(0));
 }
 
-static void init_periph_clock(void)
+INIT_ATTR static void init_periph_clock(void)
 {
     reg_writef(RCC_D1CCIPR, SDMMCSEL_V(PLL1Q));
     reg_writef(RCC_D2CCIP1R, SPI45SEL_V(HSE));
@@ -170,7 +170,7 @@ static void init_periph_clock(void)
     reg_writef(RCC_AHB3LPENR, AXISRAMEN(1));
 }
 
-void stm_target_clock_init(void)
+void echoplayer_clock_init(void)
 {
     init_hse();
     init_pll();
diff --git a/firmware/target/arm/stm32/echoplayer/clock-echoplayer.h b/firmware/target/arm/stm32/echoplayer/clock-echoplayer.h
index cea54441c0..e6f3624537 100644
--- a/firmware/target/arm/stm32/echoplayer/clock-echoplayer.h
+++ b/firmware/target/arm/stm32/echoplayer/clock-echoplayer.h
@@ -23,6 +23,8 @@
 
 #include "clock-stm32h7.h"
 
+void echoplayer_clock_init(void) INIT_ATTR;
+
 extern struct stm32_clock sdmmc1_ker_clock;
 extern struct stm32_clock ltdc_ker_clock;
 extern struct stm32_clock spi5_ker_clock;
diff --git a/firmware/target/arm/stm32/echoplayer/system-echoplayer.c b/firmware/target/arm/stm32/echoplayer/system-echoplayer.c
index e2fb89e719..6a980f983e 100644
--- a/firmware/target/arm/stm32/echoplayer/system-echoplayer.c
+++ b/firmware/target/arm/stm32/echoplayer/system-echoplayer.c
@@ -20,8 +20,8 @@
  ****************************************************************************/
 #include "system.h"
 #include "button.h"
-#include "clock-stm32h7.h"
 #include "gpio-stm32h7.h"
+#include "clock-echoplayer.h"
 #include "regs/stm32h743/fmc.h"
 #include "regs/stm32h743/rcc.h"
 #include "regs/cortex-m/cm_scb.h"
@@ -199,7 +199,7 @@ void system_init(void)
     stm32_enable_caches();
 
     /* Initialize system clocks */
-    stm_clock_init();
+    echoplayer_clock_init();
 
     /* Enable systick early due to udelay() needed for FMC init */
     stm32_systick_enable();
-- 
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