u-boot.git/drivers/serial, branch next

serial: lpuart: Use livetree API for fdt access

2026-06-26T20:06:39Z

Use livetree API, otherwise driver will fail to read properties from the device tree when OF_LIVE is enabled. Signed-off-by: Peng Fan

Kconfig: drivers: restyle remaining

2026-06-25T21:00:58Z

Restyle all Kconfigs for the rest of "drivers": Menu entries : no space left Menu attributes: 1 TAB Help text : 1 TAB + 2 spaces Replace '---help---' by 'help' Signed-off-by: Johan Jonker [trini: Add missing indentation on a few more multi-paragraph help texts] Signed-off-by: Tom Rini

serial: goldfish: return error when device address is invalid

2026-06-23T18:37:21Z

goldfish_serial_of_to_plat() returns success even when dev_read_addr() fails to find a valid address. This leaves plat->reg unset and defers the failure to probe(). Return -EINVAL immediately when the address is FDT_ADDR_T_NONE so the failure is reported at the of_to_plat stage where it belongs. Signed-off-by: Naveen Kumar Chaudhary Acked-by: Kuan-Wei Chiu

serial: cortina: check RX FIFO status before reading data

2026-06-23T18:37:02Z

ca_serial_getc() reads from the URX_DATA register unconditionally without first checking whether the RX FIFO contains valid data. When the FIFO is empty, this returns whatever stale value is in the register, which the DM serial framework interprets as a valid character. The DM serial framework expects getc() to return -EAGAIN when no data is available, so it can handle retries and call schedule() to service the watchdog between attempts. Add a check of the UINFO register's UINFO_RX_FIFO_EMPTY bit before reading URX_DATA, returning -EAGAIN when no data is pending. This is consistent with how ca_serial_putc() already checks UINFO_TX_FIFO_FULL before writing. Signed-off-by: Naveen Kumar Chaudhary

Merge tag 'v2026.07-rc5' into next

2026-06-22T22:42:41Z

Prepare v2026.07-rc5

serial: sh: Fix dev_read_addr error check

2026-06-22T04:34:09Z

dev_read_addr returns FDT_ADDR_T_NONE (-1) in case of error and not 0. Signed-off-by: Francois Berder Reviewed-by: Simon Glass Reviewed-by: Marek Vasut Tested-by: Marek Vasut # R-Car H3/M3-W/M3-N Salvator-X(S), H3/M3-W ULCB, V4H Sparrow Hawk, X5H Ironhide RSIP and CA720AE Signed-off-by: Marek Vasut # Update subject tags

serial: lpuart: Fix RX FIFO Enable bitmask

2026-06-10T20:49:55Z

The Receive FIFO Enable (RXFE) field in the LPUART FIFO register is bit 3 on all supported architectures. The define has been wrong since it was introduced: for non-i.MX8/i.MXRT it set bit 6, which on LS102xA is read-only-as-zero, so the bug went unnoticed. NXP confirmed bit 3 is correct everywhere, so drop the ARCH-based selection. Link: https://github.com/nxp-imx/uboot-imx/commit/9498bcc514737269bb0ca436f775460741ab8199 Link: https://lore.kernel.org/u-boot/dc163ea7-9063-4dfb-a39a-e643c0bcccf1@oss.nxp.com/ Fixes: 6209e14cb026 ("serial: lpuart: add 32-bit registers lpuart support") Signed-off-by: Emanuele Ghidoli Reviewed-by: Francesco Dolcini Reviewed-by: Sébastien Szymanski

serial: serial_octeon_bootcmd.c: use correct Kconfig symbol

2026-06-10T09:23:26Z

CONFIG_SYS_IS_IN_ENV does not exist. CONFIG_SYS_CONSOLE_IS_IN_ENV seems to be needed here. Fixes: f1054661e50f ("serial: serial_octeon_bootcmd.c: Add PCI remote console support") Signed-off-by: Heinrich Schuchardt Reviewed-by: Stefan Roese

serial: msm-geni: configure RX watermark register

2026-05-18T09:04:14Z

The SE_GENI_RX_WATERMARK_REG was not being programmed in the RX setup paths. Set it to DEF_RX_WM (2) in qcom_geni_serial_start_rx(), msm_geni_serial_setup_rx() and _debug_uart_init() to align with the Linux kernel driver behaviour. Without this, the RX FIFO watermark interrupt threshold is left at its hardware reset value, which may differ from the expected value and can cause RX data loss or missed watermark interrupts. Link: https://lore.kernel.org/all/20200227132223.864425794@linuxfoundation.org/ Signed-off-by: Timple Raj M Signed-off-by: Gurumoorthy Santhakumar Reviewed-by: Simon Glass Reviewed-by: Sumit Garg Reviewed-by: Csey Connolly Link: https://patch.msgid.link/20260421044555.368486-1-gurumoorthy.santhakumar@oss.qualcomm.com Signed-off-by: Casey Connolly

Merge patch series "serial: goldfish: Add debug uart support"

2026-04-14T19:25:32Z

This series from Daniel Palmer improves debug UART support on QEMU on M68K by adding debug uart support to the serial driver. Link: https://lore.kernel.org/r/20260309105110.672832-1-daniel@0x0f.com