kernel.git/Documentation/devicetree/bindings/serial, branch linux-4.16.y

dt-bindings: mvebu-uart: DT fix s/interrupts-names/interrupt-names/

2018-06-20T19:01:23Z

[ Upstream commit 17a16542b88e753cc3bd54cf30b74df3d547421e ] Signed-off-by: Geert Uytterhoeven Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

dt-bindings: meson-uart: DT fix s/clocks-names/clock-names/

2018-06-20T19:01:23Z

[ Upstream commit 34df2466b48dfe258e14fe2a7bc4641416575ade ] Signed-off-by: Geert Uytterhoeven Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

dt-bindings: serial: sh-sci: Add support for r8a77965 (H)SCIF

2018-06-20T19:01:16Z

[ Upstream commit 7de5b7e5f6a67c285b86d1478e8e150929c93482 ] Add documentation for r8a77965 compatible string to Renesas sci-serial device tree bindings documentation. Signed-off-by: Jacopo Mondi Reviewed-by: Geert Uytterhoeven Signed-off-by: Rob Herring Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

serial: 8250: Add Nuvoton NPCM UART

2018-04-08T12:29:49Z

commit f597fbce38d230af95384f4a04e0a13a1d0ad45d upstream. The Nuvoton UART is almost compatible with the 8250 driver when probed via the 8250_of driver, however it requires some extra configuration at startup. Reviewed-by: Rob Herring Signed-off-by: Joel Stanley Cc: stable Signed-off-by: Greg Kroah-Hartman

Merge tag 'devicetree-for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2018-02-01T18:57:45Z

Pull DeviceTree updates from Rob Herring: - Convert to use memblock_virt_alloc in DT code which supports bootmem arches. With this we can remove the arch specific early_init_dt_alloc_memory_arch() functions. - Enable running the DT unittests on UML - Use SPDX license tags on DT files - Fix early FDT kconfig ifdef logic - Clean-up unittest Makefile - Fix function comment for of_irq_parse_raw - Add missing documentation for linux,initrd-{start,end} properties - Clean-up of binding examples using uppercase hex - Add trivial devices W83773G and Infineon TLV493D-A1B6 - Add missing STM32 SoC bindings - Various small binding doc fixes * tag 'devicetree-for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (23 commits) xtensa: remove arch specific early DT functions x86: remove arch specific early_init_dt_alloc_memory_arch nios2: remove arch specific early_init_dt_alloc_memory_arch mips: remove arch specific early_init_dt_alloc_memory_arch metag: remove arch specific early DT functions cris: remove arch specific early DT functions libfdt: remove unnecessary include directive from of: unittest: refactor Makefile of/fdt: use memblock_virt_alloc for early alloc of: Use SPDX license tag for DT files of/fdt: Fix #ifdef dependency of early flattree declarations dt-bindings: h8300 clocksource: correct spelling of pulse dt-bindings: imx6q-pcie: Add required property for i.MX6SX mmc: Don't reference Linux-specific OF_GPIO_ACTIVE_LOW flag in DT binding dt-bindings: Use lower case hex in unit-addresses dt-bindings: display: panel: Fix compatible string for Toshiba LT089AC29000 dt-bindings: Add Infineon TLV493D-A1B6 dt-bindings: mailbox: ti,message-manager: Fix interrupt name error dt-bindings: chosen: Document linux,initrd-{start,end} dt-bindings: arm: document supported STM32 SoC family ...

serial: 8250_ingenic: Add support for the JZ4770 SoC

2018-01-09T15:49:14Z

The JZ4770 SoC's UART is no different from the other JZ SoCs, so this commit simply adds the ingenic,jz4770-uart compatible string. Signed-off-by: Paul Cercueil Acked-by: Rob Herring Signed-off-by: Greg Kroah-Hartman

dt-bindings: Use lower case hex in unit-addresses

2017-12-26T16:37:05Z

DT unit addresses should be lower case hex. Fix all the binding examples. Converted with the following command from Krzysztof Kozlowski: sed -e 's/@$[a-fA-F0-9_-]*$ {/@\L\1 {/' -i $(find Documentation/devicetree/bindings -name '*.txt') Signed-off-by: Rob Herring

serial: max310x: Document clock setup

2017-12-19T08:59:02Z

As a kernel newcomer, I got bitten by lack of examples on this front. I had troubles figuring out where these clocks could be defined ("/clocks" is where the generic infrastructure expects them). One should also ensure that a unique name is used. Generic names such as "osc" tend to be already used by some board-wide clock crystals. Signed-off-by: Jan Kundrát Signed-off-by: Greg Kroah-Hartman

serial: max310x: Use level-triggered interrupts

2017-12-19T08:59:01Z

I was getting this trace along with a disabled IRQ when I was generating heavy traffic over four daisy-chained UARTs (MAX14830) on my test kit (Marvell Armada AM388, Solidrun Clearfog Base): irq 51: nobody cared (try booting with the "irqpoll" option) CPU: 0 PID: 68 Comm: irq/51-spi1.2 Not tainted 4.14.4 #7 Hardware name: Marvell Armada 380/385 (Device Tree) [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) from [] (dump_stack+0x84/0x98) [] (dump_stack) from [] (__report_bad_irq+0x28/0xcc) [] (__report_bad_irq) from [] (note_interrupt+0x28c/0x2dc) [] (note_interrupt) from [] (handle_irq_event_percpu+0x4c/0x58) [] (handle_irq_event_percpu) from [] (handle_irq_event+0x44/0x68) [] (handle_irq_event) from [] (handle_edge_irq+0x12c/0x1dc) [] (handle_edge_irq) from [] (generic_handle_irq+0x24/0x34) [] (generic_handle_irq) from [] (mvebu_gpio_irq_handler+0xe0/0x184) [] (mvebu_gpio_irq_handler) from [] (generic_handle_irq+0x24/0x34) [] (generic_handle_irq) from [] (__handle_domain_irq+0x5c/0xb4) [] (__handle_domain_irq) from [] (gic_handle_irq+0x4c/0x90) [] (gic_handle_irq) from [] (__irq_svc+0x6c/0x90) Exception stack(0xeea77c30 to 0xeea77c78) 7c20: 0000000a 018cba80 0000000a f098f680 7c40: 0000020a f098f680 00000008 0000020a 018cba80 00000001 ee9302a0 eea76000 7c60: ef2b2640 eea77c80 c050687c c0506894 80070013 ffffffff [] (__irq_svc) from [] (orion_spi_setup_transfer+0x118/0x20c) [] (orion_spi_setup_transfer) from [] (orion_spi_transfer_one+0x1c/0x26c) [] (orion_spi_transfer_one) from [] (spi_transfer_one_message+0xec/0x500) [] (spi_transfer_one_message) from [] (__spi_pump_messages+0x3f4/0x680) [] (__spi_pump_messages) from [] (__spi_sync+0x1fc/0x200) [] (__spi_sync) from [] (spi_sync+0x24/0x3c) [] (spi_sync) from [] (spi_write_then_read+0xd0/0x17c) [] (spi_write_then_read) from [] (_regmap_raw_read+0xb0/0x250) [] (_regmap_raw_read) from [] (_regmap_bus_read+0x24/0x4c) [] (_regmap_bus_read) from [] (_regmap_read+0x60/0x148) [] (_regmap_read) from [] (regmap_read+0x3c/0x5c) [] (regmap_read) from [] (max310x_port_irq+0x104/0x2dc) [] (max310x_port_irq) from [] (max310x_ist+0x68/0xc0) [] (max310x_ist) from [] (irq_thread_fn+0x1c/0x54) [] (irq_thread_fn) from [] (irq_thread+0x12c/0x1f0) [] (irq_thread) from [] (kthread+0x128/0x158) [] (kthread) from [] (ret_from_fork+0x14/0x24) handlers: [] irq_default_primary_handler threaded [] max310x_ist Disabling IRQ #51 On a multi-UART max310x, each UART has its own interrupt status register which automatically de-asserts the IRQ line upon read. (There are also top-level IRQ indicator registers which are not clear-on-read, but they are not relevant here.) It was quite possible to receive a pending IRQ for, e.g., UART0, enter the threaded IRQ handler, clear the ISR for UART0 which de-asserts the IRQ line, and then race with another event on the same chip, but a different UART channel. That resulted in another edge on the shared-within-the-chip IRQ line which got intercepted by the kernel. That all led to an edge-level interrupt which was not being handled by anybody because our threaded handler hasn't finished yet. As the chip actually uses *level* triggered IRQs, let's convert the example DT bindings to these. Signed-off-by: Jan Kundrát Signed-off-by: Greg Kroah-Hartman

dt-bindings: mvebu-uart: update documentation with extended UART

2017-12-15T19:27:44Z

Update the device tree binding documentation for the Marvell EBU UART, in order to allow describing the extended UART IP block, in addition to the already supported standard UART IP. This requires adding a new compatible string, the introduction of a clocks property, and extensions to the interrupts property. Signed-off-by: Miquel Raynal Reviewed-by: Gregory CLEMENT Acked-by: Rob Herring Signed-off-by: Greg Kroah-Hartman