u-boot.git/drivers/serial, branch v2024.01-rc2

serial: sh: Drop

2023-11-02T10:30:18Z

In line with changes elsewhere, drop inclusion of the common header. Signed-off-by: Paul Barker

serial: introduce CONFIG_CONSOLE_FLUSH_ON_NEWLINE

2023-10-24T21:05:24Z

When debugging, one sometimes only gets partial output lines or nothing at all from the last printf, because the uart has a largish buffer, and the code after the printf() may cause the CPU to hang before the uart IP has time to actually emit all the characters. That can be very confusing, because one doesn't then know exactly where the hang happens. Introduce a config knob allowing one to wait for the uart fifo to drain whenever a newline character is printed, roughly corresponding to the effect of setvbuf(..., _IOLBF, ...) in ordinary C programs. Since this uses IS_ENABLED() instead of cpp ifdef, we can remove the ifdef around the _serial_flush() definition - if neither CONSOLE_FLUSH_SUPPORT or CONSOLE_FLUSH_ON_NEWLINE are enabled, the compiler elides _serial_flush(), but it won't warn about it being unused. Signed-off-by: Rasmus Villemoes Reviewed-by: Simon Glass

serial: serial-uclass.c: move definition of _serial_flush up a bit

2023-10-24T21:05:24Z

Preparation for next patch. Reviewed-by: Simon Glass Signed-off-by: Rasmus Villemoes

Merge tag 'u-boot-amlogic-20231023' of https://source.denx.de/u-boot/custodians/u-boot-amlogic

2023-10-23T13:04:17Z

- sync A1 with Linux and add missing UART compatible - fix USB2 gadget init on G12/SM1 based Boards

serial: sh: Add RZ/G2L SCIF support

2023-10-19T15:03:20Z

Extend the existing driver to support the SCIF serial ports on the Renesas RZ/G2L (R9A07G044) SoC. This also requires us to ensure that if there is a reset signal defined in the device tree, it is de-asserted before we try to talk to the SCIF module. Signed-off-by: Paul Barker Reviewed-by: Biju Das Reviewed-by: Lad Prabhakar Reviewed-by: Marek Vasut Tested-by: Marek Vasut # R-Car H3 Salvator-XS

serial: sh: Fix error handling

2023-10-19T15:03:15Z

The current SCIF error handling is broken for the RZ/G2L. After a break condition has been triggered, the current code is unable to clear the error and serial port output never resumes. The RZ/G2L datasheet says that most error conditions are cleared by resetting the relevant error bits in the FSR & LSR registers to zero. To clear framing errors on SCIF ports, the invalid data also needs to be read out of the receive FIFO. After reviewing datasheets for RZ/G2{H,M,N,E}, R-Car Gen4, R-Car Gen3 and even SH7751 SoCs, it's clear that this is the way to clear errors for all of these SoCs. While we're here, annotate the handle_error() function with a couple of comments as the reads and writes themselves don't immediately make it clear what we're doing. Signed-off-by: Paul Barker Tested-by: Chris Paterson # HiHope RZ/G2M board Tested-by: Marek Vasut # R-Car H3 Salvator-XS

serial: amlogic: Add UART compatible for A1 board

2023-10-18T07:46:01Z

Add additional compatible to allow using serial driver with A1 board. After compatible change in DTS [1], serial_meson driver should still be able to work with console device. [1] https://lore.kernel.org/all/20230705181833.16137-8-ddrokosov@sberdevices.ru/ Signed-off-by: Igor Prusov Reviewed-by: Neil Armstrong Link: https://lore.kernel.org/r/20231017213211.121550-2-ivprusov@salutedevices.com Signed-off-by: Neil Armstrong

spl: Allow enabling SPL_OF_REAL and SPL_OF_PLATDATA at the same time

2023-10-18T00:50:52Z

Sandbox unit tests in U-Boot proper load a test device tree to have some devices to work with. In order to do the same in SPL, we must enable SPL_OF_REAL. However, we already have SPL_OF_PLATDATA enabled. When generating platdata from a devicetree, it is expected that we will not need devicetree access functions (even though SPL_OF_CONTROL is enabled). This expectation does not hold for sandbox, so allow user control of SPL_OF_REAL. There are several places in the tree where conditions involving OF_PLATDATA or OF_REAL no longer function correctly when both of these options can be selected at the same time. Adjust these conditions accordingly. Signed-off-by: Sean Anderson Reviewed-by: Simon Glass

Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-sh

2023-10-17T13:15:56Z

- RZ/G2L part 1, except for two serial port patches which I had to drop as they broke R2Dplus, they will come later via subsequent PR.

serial: sh: Sort includes

2023-10-17T01:27:42Z

Tidy up the existing include list before we add more includes in the following patch. Signed-off-by: Paul Barker Reviewed-by: Marek Vasut