From 4d4905f6cc5b6534e9a3b6a3c75bcee840a27751 Mon Sep 17 00:00:00 2001 From: Joel Stanley Date: Tue, 28 Jul 2020 12:25:23 +0930 Subject: dt-bindings: fsi: Document gpios The FSI master has some associated GPIOs that may be present on some hardware configurations. Reviewed-by: Andrew Jeffery Link: https://lore.kernel.org/r/20200728025527.174503-2-joel@jms.id.au Signed-off-by: Joel Stanley --- Documentation/devicetree/bindings/fsi/fsi-master-aspeed.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'Documentation/devicetree/bindings/fsi') diff --git a/Documentation/devicetree/bindings/fsi/fsi-master-aspeed.txt b/Documentation/devicetree/bindings/fsi/fsi-master-aspeed.txt index b758f91914f7..9853fefff5d8 100644 --- a/Documentation/devicetree/bindings/fsi/fsi-master-aspeed.txt +++ b/Documentation/devicetree/bindings/fsi/fsi-master-aspeed.txt @@ -12,6 +12,13 @@ Required properties: - pinctrl-0: phandle to pinctrl node - pinctrl-names: pinctrl state +Optional properties: + - cfam-reset-gpios: GPIO for CFAM reset + + - fsi-routing-gpios: GPIO for setting the FSI mux (internal or cabled) + - fsi-mux-gpios: GPIO for detecting the desired FSI mux state + + Examples: fsi-master { @@ -21,4 +28,9 @@ Examples: pinctrl-names = "default"; pinctrl-0 = <&pinctrl_fsi1_default>; clocks = <&syscon ASPEED_CLK_GATE_FSICLK>; + + fsi-routing-gpios = <&gpio0 ASPEED_GPIO(Q, 7) GPIO_ACTIVE_HIGH>; + fsi-mux-gpios = <&gpio0 ASPEED_GPIO(B, 0) GPIO_ACTIVE_HIGH>; + + cfam-reset-gpios = <&gpio0 ASPEED_GPIO(Q, 0) GPIO_ACTIVE_LOW>; }; -- cgit v1.2.3