drivers: spi: fix unreliable SPI busy flag for some STM32 devices

Extend the workaround for the unreliable SPI busy flag to all F7 and L4 devices, which are affected by the same erratum. Fixes #67739 Signed-off-by: Benedikt Schmidt <[email protected]>
zephyrproject-rtos · Jan 23, 2024 · 2141bb4 · 2141bb4
1 parent 8ae3157
commit 2141bb4
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Showing 2 changed files with 7 additions and 8 deletions.
diff --git a/drivers/spi/Kconfig.stm32 b/drivers/spi/Kconfig.stm32
@@ -32,22 +32,21 @@ config SPI_STM32_USE_HW_SS
 	help
 	  Use Slave Select pin instead of software Slave Select.
 
-config SPI_STM32F7_ERRATA_BUSY
+config SPI_STM32_ERRATA_BUSY
 	bool
 	default y
-	depends on SOC_STM32F745XX || SOC_STM32F746XX || \
-		   SOC_STM32F750XX || SOC_STM32F756XX
+	depends on SOC_SERIES_STM32F7X || SOC_SERIES_STM32L4X
 	help
 	  Handles erratum "BSY bit may stay high at the end of a data
-	  transfer in Slave mode".
-	  Seen in Errata Sheet 0290 §2.11.2
+	  transfer in slave mode".
+	  Seen for instance in Errata Sheet 0290 §2.11.2
 
-if SPI_STM32F7_ERRATA_BUSY
+if SPI_STM32_ERRATA_BUSY
 
 config SPI_STM32_BUSY_FLAG_TIMEOUT
 	int "timeout in us for the STM32 busy flag workaround"
 	default 10000
 
-endif # SPI_STM32F7_ERRATA_BUSY
+endif # SPI_STM32_ERRATA_BUSY
 
 endif # SPI_STM32
diff --git a/drivers/spi/spi_ll_stm32.c b/drivers/spi/spi_ll_stm32.c
@@ -922,7 +922,7 @@ static int transceive_dma(const struct device *dev,
 		}
 #endif
 
-#ifdef CONFIG_SPI_STM32F7_ERRATA_BUSY
+#ifdef CONFIG_SPI_STM32_ERRATA_BUSY
 		WAIT_FOR(ll_func_spi_dma_busy(spi) != 0,
 			 CONFIG_SPI_STM32_BUSY_FLAG_TIMEOUT,
 			 k_yield());