diff options
| author | Martin Devera <devik@eaxlabs.cz> | 2021-03-28 17:43:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-05 12:06:52 +0200 |
| commit | 3cd66593725a234662955baaf78d2ce5333de56d (patch) | |
| tree | 23ec4270a758fc328c50ed92cb659b2439db3795 /drivers/tty/serial/stm32-usart.h | |
| parent | 1b8dc3988dd204aef296047a02364b5ad823f1b4 (diff) | |
| download | linux-3cd66593725a234662955baaf78d2ce5333de56d.tar.gz linux-3cd66593725a234662955baaf78d2ce5333de56d.tar.bz2 linux-3cd66593725a234662955baaf78d2ce5333de56d.zip | |
tty/serial: Add rx-tx-swap OF option to stm32-usart
STM32 F7/H7 usarts supports RX & TX pin swapping.
Add option to turn it on.
Tested on STM32MP157.
Acked-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Signed-off-by: Martin Devera <devik@eaxlabs.cz>
Link: https://lore.kernel.org/r/20210328154306.22674-2-devik@eaxlabs.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/stm32-usart.h')
| -rw-r--r-- | drivers/tty/serial/stm32-usart.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/tty/serial/stm32-usart.h b/drivers/tty/serial/stm32-usart.h index a86773f1a4c4..77d1ac082e89 100644 --- a/drivers/tty/serial/stm32-usart.h +++ b/drivers/tty/serial/stm32-usart.h @@ -25,6 +25,7 @@ struct stm32_usart_offsets { struct stm32_usart_config { u8 uart_enable_bit; /* USART_CR1_UE */ bool has_7bits_data; + bool has_swap; bool has_wakeup; bool has_fifo; int fifosize; @@ -76,6 +77,7 @@ struct stm32_usart_info stm32f7_info = { .cfg = { .uart_enable_bit = 0, .has_7bits_data = true, + .has_swap = true, .fifosize = 1, } }; @@ -97,6 +99,7 @@ struct stm32_usart_info stm32h7_info = { .cfg = { .uart_enable_bit = 0, .has_7bits_data = true, + .has_swap = true, .has_wakeup = true, .has_fifo = true, .fifosize = 16, @@ -268,6 +271,7 @@ struct stm32_port { int last_res; bool tx_dma_busy; /* dma tx busy */ bool hw_flow_control; + bool swap; /* swap RX & TX pins */ bool fifoen; bool wakeup_src; int rdr_mask; /* receive data register mask */ |