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u-boot/drivers/serial
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Loic Poulain 7150f56a85 serial: mxc: Wait for TX completion before reset 
The u-boot console may show some corrupted characters when
printing in board_init() due to reset or baudrate change
of the UART (probe) before the TX FIFO has been completely
drained.

To fix this issue, and in case UART is still running, we now
try to flush the FIFO before proceeding to UART reinitialization.
For this we're waiting for Transmitter Complete bit, indicating
that the FIFO and the shift register are empty.

flushing has a 4ms timeout guard, which is normally more than
enough to consume the FIFO @ low baudrate (9600bps).

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Tested-by: Lothar Waßmann <LW@KARO-electronics.de>
Acked-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Fabio Estevam <festevam@denx.de>
2023-01-30 23:23:02 +01:00
..
altera_jtag_uart.c serial: Replace CONFIG_DEBUG_UART_BASE by CONFIG_VAL(DEBUG_UART_BASE) 2022-06-06 18:01:21 -04:00
altera_uart.c serial: Replace CONFIG_DEBUG_UART_BASE by CONFIG_VAL(DEBUG_UART_BASE) 2022-06-06 18:01:21 -04:00
arm_dcc.c serial: arm_dcc: Use CONFIG_ARM64 not CONFIG_CPU_ARMV8 2021-12-27 16:20:18 -05:00
atmel_usart.c kbuild: Remove uncmd_spl logic 2022-12-23 10:15:13 -05:00
atmel_usart.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
Kconfig arm: s5p4418: dm_serial: switch to DM_SERIAL 2023-01-02 16:06:08 -05:00
Makefile arm: s5p4418: dm_serial: switch to DM_SERIAL 2023-01-02 16:06:08 -05:00
ns16550.c global: Finish CONFIG -> CFG migration 2023-01-20 12:27:24 -05:00
sandbox.c video: Rename CONFIG_DM_VIDEO to CONFIG_VIDEO 2022-10-30 20:07:17 +01:00
serial-uclass.c post: Move CONFIG_SYS_POST to CFG_SYS_POST 2022-12-23 13:01:13 -05:00
serial.c post: Move CONFIG_SYS_POST to CFG_SYS_POST 2022-12-23 13:01:13 -05:00
serial_ar933x.c serial: Replace CONFIG_DEBUG_UART_BASE by CONFIG_VAL(DEBUG_UART_BASE) 2022-06-06 18:01:21 -04:00
serial_arc.c serial: Use -EAGAIN in getc and putc 2023-01-02 16:01:40 -05:00
serial_bcm283x_mu.c dm: treewide: Use uclass_first_device_err when accessing one device 2022-10-17 21:17:12 -06:00
serial_bcm283x_pl011.c dm: treewide: Use uclass_first_device_err when accessing one device 2022-10-17 21:17:12 -06:00
serial_bcm6345.c serial: Replace CONFIG_DEBUG_UART_BASE by CONFIG_VAL(DEBUG_UART_BASE) 2022-06-06 18:01:21 -04:00
serial_coreboot.c x86: Make coreboot sysinfo available to any x86 board 2021-03-27 13:59:37 +13:00
serial_cortina.c dm: treewide: Rename ofdata_to_platdata() to of_to_plat() 2020-12-13 16:51:09 -07:00
serial_efi.c efi: serial: Support arrow keys 2021-12-31 06:45:01 +01:00
serial_htif.c serial: Add RISC-V HTIF console driver 2022-02-10 11:18:12 +08:00
serial_intel_mid.c serial: Update NS16550_t and struct NS16550 2021-01-05 12:24:40 -07:00
serial_linflexuart.c serial: Replace CONFIG_DEBUG_UART_BASE by CONFIG_VAL(DEBUG_UART_BASE) 2022-06-06 18:01:21 -04:00
serial_lpuart.c serial: Use -EAGAIN in getc and putc 2023-01-02 16:01:40 -05:00
serial_mcf.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
serial_meson.c arm: amlogic: add setbrg op to serial device 2022-11-22 18:53:21 +01:00
serial_mpc8xx.c serial: Use -EAGAIN in getc and putc 2023-01-02 16:01:40 -05:00
serial_msm.c WS cleanup: remove trailing white space 2021-09-30 08:08:56 -04:00
serial_msm_geni.c serial: Replace CONFIG_DEBUG_UART_BASE by CONFIG_VAL(DEBUG_UART_BASE) 2022-06-06 18:01:21 -04:00
serial_mt7620.c cyclic: Use schedule() instead of WATCHDOG_RESET() 2022-09-18 10:26:33 +02:00
serial_mtk.c kbuild: Remove uncmd_spl logic 2022-12-23 10:15:13 -05:00
serial_mvebu_a3700.c serial: Use -EAGAIN in getc and putc 2023-01-02 16:01:40 -05:00
serial_mxc.c serial: mxc: Wait for TX completion before reset 2023-01-30 23:23:02 +01:00
serial_npcm.c serial: npcm: Add support for Nuvoton NPCM SoCs 2022-05-05 09:28:47 -04:00
serial_ns16550.c global: Move remaining CONFIG_SYS_NS16550_* to CFG_SYS_NS16550_* 2022-12-05 16:06:07 -05:00
serial_nulldev.c serial: remove nulldev_serial_input 2022-02-09 12:30:13 -07:00
serial_octeon_bootcmd.c cyclic: Use schedule() instead of WATCHDOG_RESET() 2022-09-18 10:26:33 +02:00
serial_octeon_pcie_console.c cyclic: Use schedule() instead of WATCHDOG_RESET() 2022-09-18 10:26:33 +02:00
serial_omap.c global: Finish CONFIG -> CFG migration 2023-01-20 12:27:24 -05:00
serial_owl.c dm: treewide: Rename ofdata_to_platdata() to of_to_plat() 2020-12-13 16:51:09 -07:00
serial_pic32.c serial: Replace CONFIG_DEBUG_UART_BASE by CONFIG_VAL(DEBUG_UART_BASE) 2022-06-06 18:01:21 -04:00
serial_pl01x.c kbuild: Remove uncmd_spl logic 2022-12-23 10:15:13 -05:00
serial_pl01x_internal.h kbuild: Remove uncmd_spl logic 2022-12-23 10:15:13 -05:00
serial_rockchip.c rockchip: serial: rename U_BOOT_DRIVER name to rockchip_uart 2022-04-18 11:25:13 +08:00
serial_s5p.c serial: s5p: Use IS_ENABLED where appropriate 2023-01-27 14:32:55 -05:00
serial_s5p4418_pl011.c arm: s5p4418: dm_serial: add driver source code 2023-01-02 16:06:08 -05:00
serial_sbi.c serial: Add a debug console using the RISC-V SBI interface 2021-10-07 16:08:23 +08:00
serial_semihosting.c serial: smh: Fake tstc 2022-06-06 18:01:21 -04:00
serial_sh.c global: Migrate CONFIG_SCIF_A to CFG 2022-12-23 10:15:11 -05:00
serial_sh.h global: Migrate CONFIG_SCIF_A to CFG 2022-12-23 10:15:11 -05:00
serial_sifive.c cyclic: Use schedule() instead of WATCHDOG_RESET() 2022-09-18 10:26:33 +02:00
serial_sti_asc.c WS cleanup: remove trailing empty lines 2021-09-30 08:08:56 -04:00
serial_stm32.c serial: Replace CONFIG_DEBUG_UART_BASE by CONFIG_VAL(DEBUG_UART_BASE) 2022-06-06 18:01:21 -04:00
serial_stm32.h dm: treewide: Rename ..._platdata variables to just ..._plat 2020-12-13 16:51:09 -07:00
serial_uniphier.c dm: treewide: Rename auto_alloc_size members to be shorter 2020-12-13 08:00:25 -07:00
serial_xen.c WS cleanup: remove trailing empty lines 2021-09-30 08:08:56 -04:00
serial_xuartlite.c serial: Replace CONFIG_DEBUG_UART_BASE by CONFIG_VAL(DEBUG_UART_BASE) 2022-06-06 18:01:21 -04:00
serial_zynq.c cyclic: Use schedule() instead of WATCHDOG_RESET() 2022-09-18 10:26:33 +02:00
usbtty.c global: Finish CONFIG -> CFG migration 2023-01-20 12:27:24 -05:00
usbtty.h global: Finish CONFIG -> CFG migration 2023-01-20 12:27:24 -05:00