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Conor Dooley 645f1095d3 dt-bindings: pinctrl: document pic64gx "gpio2" pinmux
The pic64gx has a second pinmux "downstream" of the iomux0 pinmux. The
documentation for the SoC provides no name for this device, but it is
used to swap pins between either GPIO controller #2 or select other
functions, hence the "gpio2" name. Currently there is no documentation
about what each bit actually does that is publicly available, nor (I
believe) what pins are affected. That info is as follows:

pin     role (1/0)
---     ----------
E14	MAC_0_MDC/GPIO_2_0
E15	MAC_0_MDIO/GPIO_2_1
F16	MAC_1_MDC/GPIO_2_2
F17	MAC_1_MDIO/GPIO_2_3
D19	SPI_0_CLK/GPIO_2_4
B18	SPI_0_SS0/GPIO_2_5
B10	CAN_0_RXBUS/GPIO_2_6
C14	PCIE_PERST_2#/GPIO_2_7
E18	PCIE_WAKE#/GPIO_2_8
D18	PCIE_PERST_1#/GPIO_2_9
E19	SPI_0_DO/GPIO_2_10
C7	SPI_0_DI/GPIO_2_11
D6	QSPI_SS0/GPIO_2_12
D7	QSPI_CLK (B)/GPIO_2_13
C9	QSPI_DATA0/GPIO_2_14
C10	QSPI_DATA1/GPIO_2_15
A5	QSPI_DATA2/GPIO_2_16
A6	QSPI_DATA3/GPIO_2_17
D8	MMUART_3_RXD/GPIO_2_18
D9	MMUART_3_TXD/GPIO_2_19
B8	MMUART_4_RXD/GPIO_2_20
A8	MMUART_4_TXD/GPIO_2_21
C12	CAN_1_TXBUS/GPIO_2_22
B12	CAN_1_RXBUS/GPIO_2_23
A11	CAN_0_TX_EBL_N/GPIO_2_24
A10	CAN_1_TX_EBL_N/GPIO_2_25
D11	MMUART_2_RXD/GPIO_2_26
C11	MMUART_2_TXD/GPIO_2_27
B9	CAN_0_TXBUS/GPIO_2_28

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
History 2025-10-24 11:08:25 +02:00
arch Kbuild fixes for 6.18 #1 2025-10-11 15:47:12 -07:00
block block-6.18-20251009 2025-10-10 10:37:13 -07:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto This push contains the following changes: 2025-10-10 08:56:16 -07:00
Documentation dt-bindings: pinctrl: document pic64gx "gpio2" pinmux 2025-10-24 11:08:25 +02:00
drivers pinctrl: tegra20: register csus_mux clock 2025-10-14 14:02:57 +02:00
fs - Avoid -Wflex-array-member-not-at-end warnings 2025-10-10 14:06:02 -07:00
include pinctrl: pinmux: Add missing .function_is_gpio kerneldoc 2025-10-23 14:14:31 +02:00
init printk changes for 6.18 2025-10-04 11:13:11 -07:00
io_uring io_uring/zcrx: increment fallback loop src offset 2025-10-08 07:26:14 -06:00
ipc namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
kernel tracing fixes for v6.18: 2025-10-11 16:06:04 -07:00
lib lib/test_kho: use kho_preserve_vmalloc instead of storing addresses in fdt 2025-10-07 13:48:56 -07:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm slab hotfix for 6.18-rc1 2025-10-11 10:40:24 -07:00
net bpf-fixes 2025-10-11 10:31:38 -07:00
rust 7 hotfixes. All 7 are cc:stable and all 7 are for MM. 2025-10-11 10:14:55 -07:00
samples Char/Misc/IIO/Binder changes for 6.18-rc1 2025-10-04 16:26:32 -07:00
scripts Kbuild fixes for 6.18 #1 2025-10-11 15:47:12 -07:00
security integrity-v6.18 2025-10-05 10:48:33 -07:00
sound sound fixes for 6.18-rc1 2025-10-10 09:55:19 -07:00
tools - Remove a bunch of asm implementing condition flags testing in KVM's 2025-10-11 11:19:16 -07:00
usr gen_init_cpio: Ignore fsync() returning EINVAL on pipes 2025-10-07 09:53:05 -07:00
virt hyperv-next for v6.18 2025-10-07 08:40:15 -07:00
.clang-format memblock: drop for_each_free_mem_pfn_range_in_zone_from() 2025-09-14 08:49:03 +03:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: remove Alyssa Rosenzweig 2025-09-18 21:17:31 +02:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore .gitignore: ignore compile_commands.json globally 2025-08-12 15:53:55 -07:00
.mailmap MAINTAINERS, .mailmap: update Umang's email address 2025-10-07 13:48:55 -07:00
.pylintrc tools: docs: parse-headers.py: move it from sphinx dir 2025-08-29 15:54:42 -06:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS USB/Thunderbolt changes for 6.18-rc1 2025-10-04 16:07:08 -07:00
Kbuild sched: Make migrate_{en,dis}able() inline 2025-09-25 09:57:16 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS dt-bindings: pinctrl: Convert bitmain,bm1880-pinctrl to DT schema 2025-10-22 15:11:20 +02:00
Makefile Linux 6.18-rc1 2025-10-12 13:42:36 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.