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1 OLPC XO-1.75 Embedded Controller
2
3 Required properties:
4 - compatible: Should be "olpc,xo1.75-ec".
5 - cmd-gpios: gpio specifier of the CMD pin
6
7 The embedded controller requires the SPI controller driver to signal readiness
8 to receive a transfer (that is, when TX FIFO contains the response data) by
9 strobing the ACK pin with the ready signal. See the "ready-gpios" property of the
10 SSP binding as documented in:
11 <Documentation/devicetree/bindings/spi/marvell,mmp2-ssp.yaml>.
12
13 Example:
14         &ssp3 {
15                 spi-slave;
16                 ready-gpios = <&gpio 125 GPIO_ACTIVE_HIGH>;
17
18                 slave {
19                         compatible = "olpc,xo1.75-ec";
20                         spi-cpha;
21                         cmd-gpios = <&gpio 155 GPIO_ACTIVE_HIGH>;
22                 };
23         };