u-boot.git/drivers/serial/Kconfig, branch v2025.07

serial: Setup default base and frequency for Versal platforms

2025-04-16T11:42:06Z

Add useful default debug uart values for all Versal platforms to simplify and speed up debug uart enabling. The similar change has been done for Zynq/ZynqMP by commit ad55d99e3cc3 ("serial: Setup serial base and freq for zynq/zynqmp"). Signed-off-by: Michal Simek Link: https://lore.kernel.org/r/86edf3dbb6de16337aac36f5121f306f83149fc0.1741868624.git.michal.simek@amd.com

serial: Add missing TPL_SYS_NS16550_SERIAL symbol

2025-03-18T14:12:18Z

On PowerPC platforms with TPL enabled and SPL_SYS_NS16550_SERIAL enabled, today this builds under TPL as well due to how $(XPL_) is defined. Add the TPL_SYS_NS16550_SERIAL itself for consistency and clarity. Signed-off-by: Tom Rini

serial: renesas: Fix R-Car spelling

2024-12-11T07:36:24Z

The correct spelling is R-Car, including the dash, update the usage. Kconfig strings and comment changes only, no functional change. Signed-off-by: Marek Vasut

serial: Support debug UART in TPL

2024-10-03T17:52:16Z

Some boards want to use the debug UART in TPL so add an option for that. Signed-off-by: Simon Glass

drivers: serial: Add xtensa semihosting driver

2024-07-04T22:08:37Z

Add xtensa semihosting driver. It can't use regular semihosting driver as Xtensa's has it's own semihosting ABI. Tested-by: Max Filippov Signed-off-by: Jiaxun Yang

serial: allow selecting MSM debug UART with ARCH_IPQ40XX

2024-04-23T11:29:13Z

Currently, DEBUG_UART_MSM depends on ARCH_SNAPDRAGON only, but IPQ40XX devices also use the same UART HW so they can also use the debug UART. So, allow selecting DEBUG_UART_MSM when using ARCH_IPQ40XX as well. Signed-off-by: Robert Marko Reviewed-by: Caleb Connolly Signed-off-by: Caleb Connolly

Merge tag 'v2024.04-rc4' into next

2024-03-11T19:27:20Z

Prepare v2024.04-rc4

ARM: renesas: Rename ARCH_RMOBILE to ARCH_RENESAS

2024-03-02T19:29:36Z

Rename ARCH_RMOBILE to ARCH_RENESAS because all the chips are made by Renesas, while only a subset of them is from the R-Mobile line. Use the following command to perform the rename: " $ git grep -l 'ARCH_RMOBILE' | xargs -I {} sed -i 's@ARCH_RMOBILE@ARCH_RENESAS@g' {} " Signed-off-by: Marek Vasut Reviewed-by: Paul Barker

serial: msm: add debug UART

2024-03-01T14:44:35Z

Introduce support for early debugging. This relies on the previous stage bootloader to initialise the UART clocks, when running with U-Boot as the primary bootloader this feature doesn't work. It will require a way to configure the clocks before the driver model is available. Reviewed-by: Neil Armstrong Reviewed-by: Sumit Garg Signed-off-by: Caleb Connolly

serial: msm-geni: don't rely on parent misc device

2024-01-16T12:26:52Z

commit 1b15483deb3f ("misc: add Qualcomm GENI SE QUP device driver") introduced support for platform-specific oversampling values, necessary to configure the UART clocks on all platforms at runtime. However it relies in probing a parent device. Despite the DM_FLAG_PRE_RELOC flag, this is not done consistently during boot. Instead, take another approach by relying on ofnode_ helpers to read the serial engine base address and do the read directly. This fixes early UART on boards with a non-default oversampling rate. Signed-off-by: Caleb Connolly