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The following commit(s) were added to refs/heads/master by this push:
new 4229099 arch/arm/stm32h7: dma and serial: add TRBUFF flag. It is
obligatory for uart.
4229099 is described below
commit 4229099944ac41b2812180ee2c0855832bb1049f
Author: Alexander Vasiljev <[email protected]>
AuthorDate: Thu Aug 12 13:04:15 2021 +0300
arch/arm/stm32h7: dma and serial: add TRBUFF flag. It is obligatory for
uart.
---
arch/arm/src/stm32h7/hardware/stm32_dma.h | 2 +-
arch/arm/src/stm32h7/stm32_dma.c | 2 +-
arch/arm/src/stm32h7/stm32_serial.c | 3 ++-
3 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/arm/src/stm32h7/hardware/stm32_dma.h
b/arch/arm/src/stm32h7/hardware/stm32_dma.h
index 64a6ab0..d998dfc 100644
--- a/arch/arm/src/stm32h7/hardware/stm32_dma.h
+++ b/arch/arm/src/stm32h7/hardware/stm32_dma.h
@@ -319,7 +319,7 @@
#define DMA_SCR_DBM (1 << 18) /* Bit 15: Double buffer mode */
#define DMA_SCR_CT (1 << 19) /* Bit 19: Current target */
- /* Bit 20: Reserved */
+#define DMA_TRBUFF (1 << 20) /* Bit 20: Enable the DMA to
handle bufferable transfers*/
#define DMA_SCR_PBURST_SHIFT (21) /* Bits 21-22: Peripheral burst
transfer configuration */
#define DMA_SCR_PBURST_MASK (3 << DMA_SCR_PBURST_SHIFT)
# define DMA_SCR_PBURST_SINGLE (0 << DMA_SCR_PBURST_SHIFT) /* 00: Single
transfer */
diff --git a/arch/arm/src/stm32h7/stm32_dma.c b/arch/arm/src/stm32h7/stm32_dma.c
index eaf5003..fc096c1 100644
--- a/arch/arm/src/stm32h7/stm32_dma.c
+++ b/arch/arm/src/stm32h7/stm32_dma.c
@@ -1350,7 +1350,7 @@ static void stm32_sdma_setup(DMA_HANDLE handle, FAR
stm32_dmacfg_t *cfg)
scr &= (DMA_SCR_PFCTRL | DMA_SCR_DIR_MASK | DMA_SCR_PINC |
DMA_SCR_MINC | DMA_SCR_PSIZE_MASK | DMA_SCR_MSIZE_MASK |
DMA_SCR_PINCOS | DMA_SCR_DBM | DMA_SCR_CIRC |
- DMA_SCR_PBURST_MASK | DMA_SCR_MBURST_MASK);
+ DMA_SCR_PBURST_MASK | DMA_SCR_MBURST_MASK | DMA_TRBUFF);
regval |= scr;
dmachan_putreg(dmachan, STM32_DMA_SCR_OFFSET, regval);
}
diff --git a/arch/arm/src/stm32h7/stm32_serial.c
b/arch/arm/src/stm32h7/stm32_serial.c
index 8e2ed6c..0438108 100644
--- a/arch/arm/src/stm32h7/stm32_serial.c
+++ b/arch/arm/src/stm32h7/stm32_serial.c
@@ -467,7 +467,8 @@
DMA_SCR_MSIZE_8BITS | \
DMA_SCR_PBURST_SINGLE | \
DMA_SCR_MBURST_SINGLE | \
- CONFIG_USART_TXDMAPRIO)
+ CONFIG_USART_TXDMAPRIO | \
+ DMA_TRBUFF)
#endif /* SERIAL_HAVE_TXDMA */
