Re: [PATCH v3 1/5] dt-bindings: PCI: toshiba,tc9563: Document embedded GPIO controller
From: Krzysztof Kozlowski <krzk@kernel.org>
Date: 2026-09-09 07:28:49
Also in:
linux-arm-msm, linux-gpio, linux-pci
On Fri, Sep 04, 2026 at 07:15:18PM +0200, Lorenzo Bianconi wrote:
The TC9563 PCIe switch embeds a GPIO controller providing 37 GPIO lines. The controller is registered as an auxiliary device by the TC9563
"auxiliary device" is Linux term, so not really relevant here.
power controller and accessed through the same register map. Describe the switch node itself as the embedded GPIO controller and document the per-port reset-gpios property.
Isn't the switch node already described?
quoted hunk ↗ jump to hunk
Signed-off-by: Lorenzo Bianconi <redacted> --- .../devicetree/bindings/pci/toshiba,tc9563.yaml | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-)diff --git a/Documentation/devicetree/bindings/pci/toshiba,tc9563.yaml b/Documentation/devicetree/bindings/pci/toshiba,tc9563.yaml index f084830c6d0c..c4cd162cb084 100644 --- a/Documentation/devicetree/bindings/pci/toshiba,tc9563.yaml +++ b/Documentation/devicetree/bindings/pci/toshiba,tc9563.yaml@@ -31,6 +31,11 @@ properties: description: GPIO controlling the RESX# pin. + gpio-controller: true + + '#gpio-cells': + const: 2 + vdd18-supply: true vdd09-supply: true@@ -84,6 +89,11 @@ $defs: type: object properties: + reset-gpios: + maxItems: 1 + description: + GPIO controlling the reset line connected to the downstream port.
Why do you exactly need this? Isn't this PERST, thus already there? Best regards, Krzysztof