1*b2d2a78aSEmmanuel Vadot# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2*b2d2a78aSEmmanuel Vadot%YAML 1.2 3*b2d2a78aSEmmanuel Vadot--- 4*b2d2a78aSEmmanuel Vadot$id: http://devicetree.org/schemas/platform/microsoft,surface-sam.yaml# 5*b2d2a78aSEmmanuel Vadot$schema: http://devicetree.org/meta-schemas/core.yaml# 6*b2d2a78aSEmmanuel Vadot 7*b2d2a78aSEmmanuel Vadottitle: Surface System Aggregator Module (SAM, SSAM) 8*b2d2a78aSEmmanuel Vadot 9*b2d2a78aSEmmanuel Vadotmaintainers: 10*b2d2a78aSEmmanuel Vadot - Konrad Dybcio <konradybcio@kernel.org> 11*b2d2a78aSEmmanuel Vadot 12*b2d2a78aSEmmanuel Vadotdescription: | 13*b2d2a78aSEmmanuel Vadot Surface devices use a standardized embedded controller to let the 14*b2d2a78aSEmmanuel Vadot operating system interface with various hardware functions. The 15*b2d2a78aSEmmanuel Vadot specific functionalities are modeled as subdevices and matched on 16*b2d2a78aSEmmanuel Vadot five levels: domain, category, target, instance and function. 17*b2d2a78aSEmmanuel Vadot 18*b2d2a78aSEmmanuel Vadotproperties: 19*b2d2a78aSEmmanuel Vadot compatible: 20*b2d2a78aSEmmanuel Vadot const: microsoft,surface-sam 21*b2d2a78aSEmmanuel Vadot 22*b2d2a78aSEmmanuel Vadot interrupts: 23*b2d2a78aSEmmanuel Vadot maxItems: 1 24*b2d2a78aSEmmanuel Vadot 25*b2d2a78aSEmmanuel Vadot current-speed: true 26*b2d2a78aSEmmanuel Vadot 27*b2d2a78aSEmmanuel Vadotrequired: 28*b2d2a78aSEmmanuel Vadot - compatible 29*b2d2a78aSEmmanuel Vadot - interrupts 30*b2d2a78aSEmmanuel Vadot 31*b2d2a78aSEmmanuel VadotadditionalProperties: false 32*b2d2a78aSEmmanuel Vadot 33*b2d2a78aSEmmanuel Vadotexamples: 34*b2d2a78aSEmmanuel Vadot - | 35*b2d2a78aSEmmanuel Vadot #include <dt-bindings/interrupt-controller/irq.h> 36*b2d2a78aSEmmanuel Vadot uart { 37*b2d2a78aSEmmanuel Vadot embedded-controller { 38*b2d2a78aSEmmanuel Vadot compatible = "microsoft,surface-sam"; 39*b2d2a78aSEmmanuel Vadot 40*b2d2a78aSEmmanuel Vadot interrupts-extended = <&tlmm 91 IRQ_TYPE_EDGE_RISING>; 41*b2d2a78aSEmmanuel Vadot 42*b2d2a78aSEmmanuel Vadot pinctrl-0 = <&ssam_state>; 43*b2d2a78aSEmmanuel Vadot pinctrl-names = "default"; 44*b2d2a78aSEmmanuel Vadot 45*b2d2a78aSEmmanuel Vadot current-speed = <4000000>; 46*b2d2a78aSEmmanuel Vadot }; 47*b2d2a78aSEmmanuel Vadot }; 48