perf: optimize flash usage of SD card driver by limiting the clock se…

…ttings to HSI48
trezor · Dec 4, 2023 · 270974e · 270974e
1 parent f1946d6
commit 270974e
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/Src/stm32u5xx_hal_sd.c b/Src/stm32u5xx_hal_sd.c
@@ -476,7 +476,7 @@ HAL_StatusTypeDef HAL_SD_InitCard(SD_HandleTypeDef *hsd)
   Init.HardwareFlowControl = SDMMC_HARDWARE_FLOW_CONTROL_DISABLE;
 
   /* Init Clock should be less or equal to 400Khz*/
-  sdmmc_clk = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_SDMMC);
+  sdmmc_clk = HSI48_VALUE;
   if (sdmmc_clk == 0U)
   {
     hsd->State = HAL_SD_STATE_READY;
@@ -2408,7 +2408,7 @@ HAL_StatusTypeDef HAL_SD_ConfigWideBusOperation(SD_HandleTypeDef *hsd, uint32_t
   }
   else
   {
-    sdmmc_clk = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_SDMMC);
+    sdmmc_clk = HSI48_VALUE;
     if (sdmmc_clk != 0U)
     {
       /* Configure the SDMMC peripheral */