bcm63xx/u-boot/drivers/serial/serial_stm32.c, branch master

serial: stm32: remove watchog reset in debug putc

2019-05-23T09:36:48Z

For STM32MP, the watchdog is based on DM and the function watchod_reset call the function uclass_get_device(UCLASS_WDT) to found the driver associated IWDG2. As this reset is not mandatory in debug putc (the uart fifo will be empty after some us), we can simplify the code by removing this call. And this patch avoid issue when putc is called before initialization of DM core, before the parsing of the device tree parsing and each node bound to driver; that also avoid memory leak. Signed-off-by: Patrick Delaunay

serial: stm32: remove unnecessary trace

2019-05-23T09:36:48Z

Remove the trace indicating the end of the DEBUG initialization Signed-off-by: Patrick Delaunay

serial: serial_stm32: Add reset support

2018-12-15T16:49:56Z

In some cases, UART is configured by early boot stage. To be sure of the initial state of UART and to avoid spurious chars on console, reset the serial block before configuring it. Signed-off-by: Patrice Chotard Reviewed-by: Simon Glass

serial: Remove DM_FLAG_PRE_RELOC flag in various drivers

2018-11-14T17:16:28Z

When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be bound before relocation. However due to a bug in the DM core, the flag only takes effect when devices are statically declared via U_BOOT_DEVICE(). This bug has been fixed recently by commit "dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in lists_bind_fdt()", but with the fix, it has a side effect that all existing drivers that declared DM_FLAG_PRE_RELOC flag will be bound before relocation now. This may expose potential boot failure on some boards due to insufficient memory during the pre-relocation stage. To mitigate this potential impact, the following changes are implemented: - Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver only supports configuration from device tree (OF_CONTROL) - Keep DM_FLAG_PRE_RELOC flag in the driver only if the device is statically declared via U_BOOT_DEVICE() - Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for drivers that support both statically declared devices and configuration from device tree Signed-off-by: Bin Meng Reviewed-by: Simon Glass

serial: stm32: Replace setparity by setconfig

2018-09-11T00:20:38Z

Replace stm32_serial_setparity by stm32_serial_setconfig which allows to set serial bits number, parity and stop bits number. Only parity setting is implemented. Signed-off-by: Patrick Delaunay Signed-off-by: Patrice Chotard Reviewed-by: Simon Glass

serial: stm32: Add setparity support

2018-05-26T22:19:18Z

Add possibility to update the serial parity used. Signed-off-by: Patrick Delaunay Signed-off-by: Patrice Chotard

serial: stm32: Fix bits defines name

2018-05-26T22:19:17Z

Rename USART_ISR_FLAG_xxx bits to USART_ISR_xxx bits and USART_ICR_OREF to USART_ICR_ORECF in order to match datasheets. Sort defines by descendant order. Signed-off-by: Patrice Chotard Reviewed-by: Simon Glass

serial: stm32: Add debug uart support

2018-05-26T22:19:17Z

Add support for early debug printf, before the availability of driver model and device tree support. Signed-off-by: Patrick Delaunay Signed-off-by: Patrice Chotard Reviewed-by: Simon Glass

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12Z

When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini

serial: serial_stm32: Rename status register flags

2018-04-28T22:32:24Z

Uart status register is named USART_ISR on STM32F7, STM32H7 and STM32MP1 SoCs family, but USART_SR only on STM32F4 SoCs. Use USART_ISR_ prefix instead of USART_SR_ . Signed-off-by: Patrice Chotard