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| author | Serge Semin <fancer.lancer@gmail.com> | 2025-09-11 15:38:29 +0300 |
|---|---|---|
| committer | Serge Semin <fancer.lancer@gmail.com> | 2026-08-13 20:36:54 +0300 |
| commit | 223d668bdffc91eb82ac267586a58de603e8e61c (patch) | |
| tree | ed5e304b7e8efb2f46f4d6188397f9fd96e68e85 | |
| parent | 9919ac0db02eb8175d599f5cac8c76b2d2a3785e (diff) | |
| download | linux-223d668bdffc91eb82ac267586a58de603e8e61c.tar.gz linux-223d668bdffc91eb82ac267586a58de603e8e61c.zip | |
dt-bindings: net: dwmac: Add embedded GPIO-chip properties
Synopsys DesignWare Ethernet controllers can be synthesized with
General-Purpose IOs support. GPIOs can work either as inputs or as outputs
depending on the gpi_i/gpo_o ports they belong. The ports width (number of
possible inputs/outputs) and the configuration registers layout depend on
the IP-core version and on the GIW/GOW (GP I/O port diwth) IP-core
synthesize parameter. For instance, DW GMAC can have from 0 to 4 GPIs and
from 0 to 4 GPOs, meanwhile DW QoS/xGMAC have wider ports width up to 16
pins of each type.
Since these GPIOs can be used as generic platform GPIOs the DW MAC DT-node
is supposed to describe them accordingly. So the DW MAC DT-bindings are
extended to permit the "ngpios" property, which can't have a value greater
than 32, standard GPIO-related properties like "gpio-controller" and
"#gpio-cells", and, if GPIs are supposed to be detected, IRQ-controller
related properties.
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
| -rw-r--r-- | Documentation/devicetree/bindings/net/snps,dwmac.yaml | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml index ae73c7bcf82c..80e0a83de9ca 100644 --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml @@ -185,6 +185,23 @@ properties: power-domains: maxItems: 1 + ngpios: + description: + Total number of GPIOs the MAC supports. The property shall include both + the GPI and GPO ports width. + minimum: 1 + maximum: 32 + + gpio-controller: true + + "#gpio-cells": + const: 2 + + interrupt-controller: true + + "#interrupt-cells": + const: 2 + mac-mode: $ref: ethernet-controller.yaml#/properties/phy-connection-type description: |