bindings/gpio/sprd%2Cgpio-eic.yaml

5 $id: http://devicetree.org/schemas/gpio/sprd,gpio-eic.yaml#
8 title: Unisoc EIC controller
16   The EIC is the abbreviation of external interrupt controller, which can
17   be used only in input mode. The Spreadtrum platform has 2 EIC controllers,
18   one is in digital chip, and another one is in PMIC. The digital chip EIC
19   controller contains 4 sub-modules, i.e. EIC-debounce, EIC-latch, EIC-async and
20   EIC-sync. But the PMIC EIC controller contains only one EIC-debounce sub-
23   The EIC-debounce sub-module provides up to 8 source input signal
32   The EIC-latch sub-module is used to latch some special power down signals
33   and generate interrupts, since the EIC-latch does not depend on the APB
36   The EIC-async sub-module uses a 32kHz clock to capture the short signals
39   The EIC-sync is similar with GPIO's input function, which is a synchronized
47           - sprd,sc9860-eic-debounce
48           - sprd,sc9860-eic-latch
49           - sprd,sc9860-eic-async
50           - sprd,sc9860-eic-sync
51           - sprd,sc2731-eic
54               - sprd,ums512-eic-debounce
55           - const: sprd,sc9860-eic-debounce
58               - sprd,ums512-eic-latch
59           - const: sprd,sc9860-eic-latch
62               - sprd,ums512-eic-async
63           - const: sprd,sc9860-eic-async
66               - sprd,ums512-eic-sync
67           - const: sprd,sc9860-eic-sync
70               - sprd,sc2730-eic
71           - const: sprd,sc2731-eic
77       EIC controller can support maximum 3 banks which has its own
115             compatible = "sprd,sc9860-eic-debounce";