kernel/linux.git/drivers/tty/serial/Kconfig, branch v5.4.50

serial/sifive: select SERIAL_EARLYCON

2019-10-04T13:01:15+00:00

The sifive serial driver implements earlycon support, but unless another driver is built in that supports earlycon support it won't be usable. Explicitly select SERIAL_EARLYCON instead. Signed-off-by: Christoph Hellwig Reviewed-by: Paul Walmsley Link: https://lore.kernel.org/r/20190910055923.28384-1-hch@lst.de Signed-off-by: Greg Kroah-Hartman

Merge tag 'tty-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2019-09-18T17:50:47+00:00

Pull tty/serial driver updates from Greg KH: "Even in this age, people are still making new serial port silicon, why... Anyway, here's the TTY and Serial driver update for 5.4-rc1. Lots of changes in here for a number of embedded serial port devices that are being worked on because people really like to see those console logs... Other than that, nothing major here, no core tty changes that anyone should care about. All of these have been in linux-next for a while with no reported issues" * tag 'tty-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (125 commits) serial: tegra: Add PIO mode support serial: tegra: report clk rate errors serial: tegra: add support to adjust baud rate serial: tegra: DT for Adjusted baud rates serial: tegra: add support to use 8 bytes trigger serial: tegra: set maximum num of uart ports to 8 serial: tegra: check for FIFO mode enabled status dt-binding: serial: tegra: add new chips serial: tegra: report error to upper tty layer serial: tegra: flush the RX fifo on frame error serial: tegra: avoid reg access when clk disabled serial: tegra: add support to ignore read serial: sprd: correct the wrong sequence of arguments dt-bindings: serial: Convert riscv,sifive-serial to json-schema serial: max310x: turn off transmitter before activating AutoCTS or auto transmitter flow control serial: max310x: Properly set flags in AutoCTS mode tty: serial: fix platform_no_drv_owner.cocci warnings dt-bindings: serial: Document Freescale LINFlexD UART serial: fsl_linflexuart: Update compatible string tty: n_gsm: avoid recursive locking with async port hangup ...

Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2019-09-16T22:48:14+00:00

Pull ARM SoC platform updates from Arnd Bergmann: "The main change this time around is a cleanup of some of the oldest platforms based on the XScale and ARM9 CPU cores, which are between 10 and 20 years old. The Kendin/Micrel/Microchip KS8695, Winbond/Nuvoton W90x900 and Intel IOP33x/IOP13xx platforms are removed after we determined that nobody is using them any more. The TI Davinci and NXP LPC32xx platforms on the other hand are still in active use and are converted to the ARCH_MULTIPLATFORM build, meaning that we can compile a kernel that works on these along with most other ARMv5 platforms. Changes toward that goal are also merged for IOP32x, but additional work is needed to complete this. Patches for the remaining ARMv5 platforms have started but need more work and some testing. Support for the new ASpeed AST2600 gets added, this is based on the Cortex-A7 ARMv7 core, and is a newer version of the existing ARMv5 and ARMv6 chips in the same family. Other changes include a cleanup of the ST-Ericsson ux500 platform and the move of the TI Davinci platform to a new clocksource driver" [ The changes had marked INTEL_IOP_ADMA and USB_LPC32XX as being buildable on other platforms through COMPILE_TEST, but that causes new warnings that I most definitely do not want to see during the merge window as that could hide other issues. So the COMPILE_TEST option got disabled for them again - Linus ] * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (61 commits) ARM: multi_v5_defconfig: make DaVinci part of the ARM v5 multiplatform build ARM: davinci: support multiplatform build for ARM v5 arm64: exynos: Enable exynos-chipid driver ARM: OMAP2+: Delete an unnecessary kfree() call in omap_hsmmc_pdata_init() ARM: OMAP2+: move platform-specific asm-offset.h to arch/arm/mach-omap2 ARM: davinci: dm646x: Fix a typo in the comment ARM: davinci: dm646x: switch to using the clocksource driver ARM: davinci: dm644x: switch to using the clocksource driver ARM: aspeed: Enable SMP boot ARM: aspeed: Add ASPEED AST2600 architecture ARM: aspeed: Select timer in each SoC dt-bindings: arm: cpus: Add ASPEED SMP ARM: imx: stop adjusting ar8031 phy tx delay mailmap: map old company name to new one @microchip.com MAINTAINERS: at91: remove the TC entry MAINTAINERS: at91: Collect all pinctrl/gpio drivers in same entry ARM: at91: move platform-specific asm-offset.h to arch/arm/mach-at91 MAINTAINERS: Extend patterns for Samsung SoC, Security Subsystem and clock drivers ARM: s3c64xx: squash samsung_usb_phy.h into setup-usb-phy.c ARM: debug-ll: Add support for r7s9210 ...

tty: serial: add dependence for CONFIG_SERIAL_FSL_LINFLEXUART

2019-09-04T10:43:54+00:00

When CONFIG_SERIAL_FSL_LINFLEXUART=y and CONFIG_PRINTK is not set, one compilation error is found as below: drivers/tty/serial/fsl_linflexuart.c: In function linflex_earlycon_putchar: drivers/tty/serial/fsl_linflexuart.c:608:31: error: CONFIG_LOG_BUF_SHIFT undeclared (first use in this function); did you mean CONFIG_ISA_BUS_API? if (earlycon_buf.len >= 1 << CONFIG_LOG_BUF_SHIFT) ^~~~~~~~~~~~~~~~~~~~ CONFIG_ISA_BUS_API This because CONFIG_LOG_BUF_SHIFT is depended on CONFIG_PRINTK, fix this by adding dependence for CONFIG_SERIAL_FSL_LINFLEXUART. Fixes: b953815b819b ("tty: serial: Add linflexuart driver for S32V234") Signed-off-by: Mao Wenan Link: https://lore.kernel.org/r/20190820124015.28409-1-maowenan@huawei.com Signed-off-by: Greg Kroah-Hartman

tty: serial: Add linflexuart driver for S32V234

2019-09-04T10:43:54+00:00

Introduce support for LINFlex driver, based on: - the version of Freescale LPUART driver after commit b3e3bf2ef2c7 ("Merge 4.0-rc7 into tty-next"); - commit abf1e0a98083 ("tty: serial: fsl_lpuart: lock port on console write"). In this basic version, the driver can be tested using initramfs and relies on the clocks and pin muxing set up by U-Boot. Remarks concerning the earlycon support: - LinFlexD does not allow character transmissions in the INIT mode (see section 47.4.2.1 in the reference manual[1]). Therefore, a mutual exclusion between the first linflex_setup_watermark/linflex_set_termios executions and linflex_earlycon_putchar was employed and the characters normally sent to earlycon during initialization are kept in a buffer and sent afterwards. - Empirically, character transmission is also forbidden within the last 1-2 ms before entering the INIT mode, so we use an explicit timeout (PREINIT_DELAY) between linflex_earlycon_putchar and the first call to linflex_setup_watermark. - U-Boot currently uses the UART FIFO mode, while this driver makes the transition to the buffer mode. Therefore, the earlycon putchar function matches the U-Boot behavior before initializations and the Linux behavior after. [1] https://www.nxp.com/webapp/Download?colCode=S32V234RM Signed-off-by: Stoica Cosmin-Stefan Signed-off-by: Adrian.Nitu Signed-off-by: Larisa Grigore Signed-off-by: Ana Nedelcu Signed-off-by: Mihaela Martinas Signed-off-by: Matthew Nunez [stefan-gabriel.mirea@nxp.com: Reduced for upstreaming and implemented earlycon support] Signed-off-by: Stefan-Gabriel Mirea Link: https://lore.kernel.org/r/20190809112853.15846-6-stefan-gabriel.mirea@nxp.com Signed-off-by: Greg Kroah-Hartman

serial: remove ks8695 driver

2019-09-04T10:43:53+00:00

The platform is getting removed, so there are no more users of this driver. Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20190809202749.742267-3-arnd@arndb.de Signed-off-by: Greg Kroah-Hartman

tty/serial: remove the ioc3_serial driver

2019-08-16T18:33:56+00:00

The SGI SN2 support is about to be removed. Remove this driver that depends on the SN2 support. Signed-off-by: Christoph Hellwig Link: https://lkml.kernel.org/r/20190813072514.23299-9-hch@lst.de Signed-off-by: Tony Luck

tty/serial: remove the ioc4_serial driver

2019-08-16T18:33:56+00:00

tty/serial: remove the sn_console driver

2019-08-16T18:33:56+00:00

serial: lpc32xx_hs: allow compile-testing

2019-08-15T19:33:04+00:00

The only thing that prevents building this driver on other platforms is the mach/hardware.h include, which is not actually used here at all, so remove the line and allow CONFIG_COMPILE_TEST. Link: https://lore.kernel.org/r/20190809144043.476786-5-arnd@arndb.de Acked-by: Greg Kroah-Hartman Acked-by: Sylvain Lemieux Signed-off-by: Arnd Bergmann