kernel/linux.git/Documentation/devicetree/bindings/serial, branch v5.15.211

dt-bindings: serial: brcm,bcm7271-uart: Constrain clocks

2025-10-02T11:39:02+00:00

commit ee047e1d85d73496541c54bd4f432c9464e13e65 upstream. Lists should have fixed constraints, because binding must be specific in respect to hardware, thus add missing constraints to number of clocks. Cc: stable Fixes: 88a499cd70d4 ("dt-bindings: Add support for the Broadcom UART driver") Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20250812121630.67072-2-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman

dt-bindings: serial: 8250: Make clocks and clock-frequency exclusive

2025-07-10T13:57:39+00:00

commit 09812134071b3941fb81def30b61ed36d3a5dfb5 upstream. The 8250 binding before converting to json-schema states, - clock-frequency : the input clock frequency for the UART or - clocks phandle to refer to the clk used as per Documentation/devicetree for clock-related properties, where "or" indicates these properties shouldn't exist at the same time. Additionally, the behavior of Linux's driver is strange when both clocks and clock-frequency are specified: it ignores clocks and obtains the frequency from clock-frequency, left the specified clocks unclaimed. It may even be disabled, which is undesired most of the time. But "anyOf" doesn't prevent these two properties from coexisting, as it considers the object valid as long as there's at LEAST one match. Let's switch to "oneOf" and disallows the other property if one exists, precisely matching the original binding and avoiding future confusion on the driver's behavior. Fixes: e69f5dc623f9 ("dt-bindings: serial: Convert 8250 to json-schema") Cc: stable Signed-off-by: Yao Zi Reviewed-by: Conor Dooley Link: https://lore.kernel.org/r/20250623093445.62327-1-ziyao@disroot.org Signed-off-by: Greg Kroah-Hartman

dt-bindings: serial: rs485: Fix rs485-rts-delay property

2024-12-14T18:51:29+00:00

[ Upstream commit 12b3642b6c242061d3ba84e6e3050c3141ded14c ] Code expects array only with 2 items which should be checked. But also item checking is not working as it should likely because of incorrect items description. Fixes: d50f974c4f7f ("dt-bindings: serial: Convert rs485 bindings to json-schema") Signed-off-by: Michal Simek Cc: stable@vger.kernel.org Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/820c639b9e22fe037730ed44d1b044cdb6d28b75.1726480384.git.michal.simek@amd.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

dt_bindings: rs485: Correct delay values

2024-12-14T18:51:29+00:00

[ Upstream commit 885dcb08c93d75b784468e65fd4f1f82d5313061 ] Currently the documentation claims that a maximum of 1000 msecs is allowed for RTS delays. However nothing actually checks the values read from device tree/ACPI and so it is possible to set much higher values. There is already a maximum of 100 ms enforced for RTS delays that are set via the UART TIOCSRS485 ioctl. To be consistent with that use the same limit for DT/ACPI values. Although this change is visible to userspace the risk of breaking anything when reducing the max delays from 1000 to 100 ms should be very low, since 100 ms is already a very high maximum for delays that are usually rather in the usecs range. Acked-by: Rob Herring Signed-off-by: Lino Sanfilippo Link: https://lore.kernel.org/r/20220710164442.2958979-7-LinoSanfilippo@gmx.de Signed-off-by: Greg Kroah-Hartman Stable-dep-of: 12b3642b6c24 ("dt-bindings: serial: rs485: Fix rs485-rts-delay property") Signed-off-by: Sasha Levin

dt-bindings: serial: renesas,scif: Fix 4th IRQ for 4-IRQ SCIFs

2023-04-13T14:48:23+00:00

commit 7b21f329ae0ab6361c0aebfc094db95821490cd1 upstream. The fourth interrupt on SCIF variants with four interrupts (RZ/A1) is the Break interrupt, not the Transmit End interrupt (like on SCI(g)). Update the description and interrupt name to fix this. Fixes: 384d00fae8e51f8f ("dt-bindings: serial: sh-sci: Convert to json-schema") Cc: stable Signed-off-by: Geert Uytterhoeven Acked-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/719d1582e0ebbe3d674e3a48fc26295e1475a4c3.1679046394.git.geert+renesas@glider.be Signed-off-by: Greg Kroah-Hartman

Merge tag 'devicetree-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2021-09-02T01:34:51+00:00

Pull devicetree updates from Rob Herring: - Refactor arch kdump DT related code to a common implementation - Add fw_devlink tracking for 'phy-handle', 'leds', 'backlight', 'resets', and 'pwm' properties - Various clean-ups to DT FDT code - Fix a runtime error for !CONFIG_SYSFS - Convert Synopsys DW PCI and derivative binding docs to schemas. Add Toshiba Visconti PCIe binding. - Convert a bunch of memory controller bindings to schemas - Covert eeprom-93xx46, Samsung Exynos TRNG, Samsung Exynos IRQ combiner, arm-charlcd, img-ascii-lcd, UniPhier eFuse, Xilinx Zynq MPSoC FPGA, Xilinx Zynq MPSoC reset, Mediatek mmsys, Gemini boards, brcm,iproc-i2c, faraday,ftpci100, and ks8851 net to DT schema. - Extend nvmem bindings to handle bit offsets in unit-addresses - Add DT schemas for HiKey 970 PCIe PHY - Remove unused ZTE, energymicro,efm32-timer, and Exynos SATA bindings - Enable dtc pci_device_reg warning by default - Fixes for handling 'unevaluatedProperties' in preparation to enable pending support in the tooling for jsonschema 2020-12 draft * tag 'devicetree-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (78 commits) dt-bindings: display: remove zte,vou.txt binding doc dt-bindings: hwmon: merge max1619 into trivial devices dt-bindings: mtd-physmap: Add 'arm,vexpress-flash' compatible dt-bindings: PCI: imx6: convert the imx pcie controller to dtschema dt-bindings: Use 'enum' instead of 'oneOf' plus 'const' entries dt-bindings: Add vendor prefix for Topic Embedded Systems of: fdt: Rename reserve_elfcorehdr() to fdt_reserve_elfcorehdr() arm64: kdump: Remove custom linux,usable-memory-range handling arm64: kdump: Remove custom linux,elfcorehdr handling riscv: Remove non-standard linux,elfcorehdr handling of: fdt: Use IS_ENABLED(CONFIG_BLK_DEV_INITRD) instead of #ifdef of: fdt: Add generic support for handling usable memory range property of: fdt: Add generic support for handling elf core headers property crash_dump: Make elfcorehdr address/size symbols always visible dt-bindings: memory: convert Samsung Exynos DMC to dtschema dt-bindings: devfreq: event: convert Samsung Exynos PPMU to dtschema dt-bindings: devfreq: event: convert Samsung Exynos NoCP to dtschema kbuild: Enable dtc 'pci_device_reg' warning by default dt-bindings: soc: remove obsolete zte zx header dt-bindings: clock: remove obsolete zte zx header ...

dt-bindings: Use 'enum' instead of 'oneOf' plus 'const' entries

2021-08-30T12:01:24+00:00

'enum' is equivalent to 'oneOf' with a list of 'const' entries, but 'enum' is more concise and yields better error messages. Cc: Maxime Ripard Cc: Vignesh R Cc: Marc Zyngier Cc: Mauro Carvalho Chehab Cc: Lee Jones Cc: "David S. Miller" Cc: Jakub Kicinski Cc: Bjorn Helgaas Cc: Kishon Vijay Abraham I Cc: Daniel Lezcano Cc: dmaengine@vger.kernel.org Cc: linux-i2c@vger.kernel.org Cc: linux-media@vger.kernel.org Cc: netdev@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: linux-phy@lists.infradead.org Cc: linux-serial@vger.kernel.org Cc: alsa-devel@alsa-project.org Cc: linux-spi@vger.kernel.org Acked-by: Sakari Ailus (mipi-ccs) Acked-by: Mark Brown Reviewed-by: Vinod Koul Acked-By: Vinod Koul Acked-by: Wolfram Sang # for I2C Acked-by: Greg Kroah-Hartman Signed-off-by: Rob Herring Link: https://lore.kernel.org/r/20210824202014.978922-1-robh@kernel.org

dt-bindings: serial: 8250: Update for standard overrun-throttle property

2021-08-05T12:01:25+00:00

In some cases we want to specify overrun-throttle like other 8250 drivers are doing. Cc: devicetree@vger.kernel.org Cc: Rob Herring Cc: Vignesh Raghavendra Acked-by: Rob Herring Signed-off-by: Tony Lindgren Link: https://lore.kernel.org/r/20210727103533.51547-1-tony@atomide.com Signed-off-by: Greg Kroah-Hartman

dt-bindings: serial: Add compatible for Mediatek MT7986

2021-07-27T10:19:49+00:00

This commit adds dt-binding documentation of uart for Mediatek MT7986 SoC Platform. Signed-off-by: Sam Shih Link: https://lore.kernel.org/r/20210726071439.14248-10-sam.shih@mediatek.com Signed-off-by: Greg Kroah-Hartman

dt-bindings: serial: 8250: Add Exar compatibles

2021-07-27T10:08:03+00:00

The Intel IXP425 Vulcan board has an Exar XR16L2551 8250-compatible. It works like an 8250 but it is always good to specify exactly which component we are using. This allows us to specify: compatible = "exar,xr16l2551", "ns8250"; Put in some sibling Exar serial compatibles while we're at it. Cc: Marc Zyngier Cc: devicetree@vger.kernel.org Acked-by: Rob Herring Signed-off-by: Linus Walleij Link: https://lore.kernel.org/r/20210716225319.1282704-1-linus.walleij@linaro.org Signed-off-by: Greg Kroah-Hartman