15def4c47SEmmanuel Vadot# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 25def4c47SEmmanuel Vadot%YAML 1.2 35def4c47SEmmanuel Vadot--- 45def4c47SEmmanuel Vadot$id: http://devicetree.org/schemas/i2c/i2c-gate.yaml# 55def4c47SEmmanuel Vadot$schema: http://devicetree.org/meta-schemas/core.yaml# 65def4c47SEmmanuel Vadot 75def4c47SEmmanuel Vadottitle: Common i2c gate properties 85def4c47SEmmanuel Vadot 95def4c47SEmmanuel Vadotmaintainers: 105def4c47SEmmanuel Vadot - Peter Rosin <peda@axentia.se> 115def4c47SEmmanuel Vadot 125def4c47SEmmanuel Vadotdescription: | 135def4c47SEmmanuel Vadot An i2c gate is useful to e.g. reduce the digital noise for RF tuners connected 145def4c47SEmmanuel Vadot to the i2c bus. Gates are similar to arbitrators in that you need to perform 155def4c47SEmmanuel Vadot some kind of operation to access the i2c bus past the arbitrator/gate, but 165def4c47SEmmanuel Vadot there are no competing masters to consider for gates and therefore there is 175def4c47SEmmanuel Vadot no arbitration happening for gates. 185def4c47SEmmanuel Vadot 195def4c47SEmmanuel VadotallOf: 205def4c47SEmmanuel Vadot - $ref: /schemas/i2c/i2c-controller.yaml 215def4c47SEmmanuel Vadot 225def4c47SEmmanuel Vadotproperties: 235def4c47SEmmanuel Vadot $nodename: 245def4c47SEmmanuel Vadot const: i2c-gate 255def4c47SEmmanuel Vadot 265def4c47SEmmanuel VadotadditionalProperties: true 275def4c47SEmmanuel Vadot 285def4c47SEmmanuel Vadotexamples: 295def4c47SEmmanuel Vadot - | 305def4c47SEmmanuel Vadot i2c-gate { 315def4c47SEmmanuel Vadot #address-cells = <1>; 325def4c47SEmmanuel Vadot #size-cells = <0>; 335def4c47SEmmanuel Vadot ak8975@c { 34*e67e8565SEmmanuel Vadot compatible = "asahi-kasei,ak8975"; 355def4c47SEmmanuel Vadot reg = <0x0c>; 365def4c47SEmmanuel Vadot }; 375def4c47SEmmanuel Vadot }; 385def4c47SEmmanuel Vadot... 39