Documentation/devicetree/bindings/pinctrl/cortina,gemini-pinctrl.txt
Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/pinctrl/cortina,gemini-pinctrl.txt
File Facts
- System
- Linux kernel
- Corpus path
Documentation/devicetree/bindings/pinctrl/cortina,gemini-pinctrl.txt- Extension
.txt- Size
- 1561 bytes
- Lines
- 69
- Domain
- Support Tooling And Documentation
- Bucket
- Documentation
- Inferred role
- Support Tooling And Documentation: documentation
- Status
- atlas-only
Why This File Exists
Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
Cortina Systems Gemini pin controller
This pin controller is found in the Cortina Systems Gemini SoC family,
see further arm/gemini.txt. It is a purely group-based multiplexing pin
controller.
The pin controller node must be a subnode of the system controller node.
Required properties:
- compatible: "cortina,gemini-pinctrl"
Subnodes of the pin controller contain pin control multiplexing set-up
and pin configuration of individual pins.
Please refer to pinctrl-bindings.txt for generic pin multiplexing nodes
and generic pin config nodes.
Supported configurations:
- skew-delay is supported on the Ethernet pins
- drive-strength with 4, 8, 12 or 16 mA as argument is supported for
entire groups on the groups "idegrp", "gmii_gmac0_grp", "gmii_gmac1_grp"
and "pcigrp".
Example:
syscon {
compatible = "cortina,gemini-syscon";
...
pinctrl {
compatible = "cortina,gemini-pinctrl";
pinctrl-names = "default";
pinctrl-0 = <&dram_default_pins>, <&system_default_pins>,
<&vcontrol_default_pins>;
dram_default_pins: pinctrl-dram {
mux {
function = "dram";
groups = "dramgrp";
};
};
rtc_default_pins: pinctrl-rtc {
mux {
function = "rtc";
groups = "rtcgrp";
};
};
power_default_pins: pinctrl-power {
mux {
function = "power";
groups = "powergrp";
};
};
system_default_pins: pinctrl-system {
mux {
function = "system";
groups = "systemgrp";
};
};
(...)
uart_default_pins: pinctrl-uart {
mux {
function = "uart";
groups = "uartrxtxgrp";
};
};
};
};
Annotation
- Atlas domain: Support Tooling And Documentation / Documentation.
- Implementation status: atlas-only.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.