1*4882a593Smuzhiyun# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2*4882a593Smuzhiyun# Copyright 2019 BayLibre, SAS 3*4882a593Smuzhiyun%YAML 1.2 4*4882a593Smuzhiyun--- 5*4882a593Smuzhiyun$id: "http://devicetree.org/schemas/soc/amlogic/amlogic,canvas.yaml#" 6*4882a593Smuzhiyun$schema: "http://devicetree.org/meta-schemas/core.yaml#" 7*4882a593Smuzhiyun 8*4882a593Smuzhiyuntitle: Amlogic Canvas Video Lookup Table 9*4882a593Smuzhiyun 10*4882a593Smuzhiyunmaintainers: 11*4882a593Smuzhiyun - Neil Armstrong <narmstrong@baylibre.com> 12*4882a593Smuzhiyun - Maxime Jourdan <mjourdan@baylibre.com> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyundescription: | 15*4882a593Smuzhiyun A canvas is a collection of metadata that describes a pixel buffer. 16*4882a593Smuzhiyun Those metadata include: width, height, phyaddr, wrapping and block mode. 17*4882a593Smuzhiyun Starting with GXBB the endianness can also be described. 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun Many IPs within Amlogic SoCs rely on canvas indexes to read/write pixel data 20*4882a593Smuzhiyun rather than use the phy addresses directly. For instance, this is the case for 21*4882a593Smuzhiyun the video decoders and the display. 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun Amlogic SoCs have 256 canvas. 24*4882a593Smuzhiyun 25*4882a593Smuzhiyunproperties: 26*4882a593Smuzhiyun compatible: 27*4882a593Smuzhiyun oneOf: 28*4882a593Smuzhiyun - items: 29*4882a593Smuzhiyun - enum: 30*4882a593Smuzhiyun - amlogic,meson8-canvas 31*4882a593Smuzhiyun - amlogic,meson8b-canvas 32*4882a593Smuzhiyun - amlogic,meson8m2-canvas 33*4882a593Smuzhiyun - const: amlogic,canvas 34*4882a593Smuzhiyun - const: amlogic,canvas # GXBB and newer SoCs 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun reg: 37*4882a593Smuzhiyun maxItems: 1 38*4882a593Smuzhiyun 39*4882a593Smuzhiyunrequired: 40*4882a593Smuzhiyun - compatible 41*4882a593Smuzhiyun - reg 42*4882a593Smuzhiyun 43*4882a593SmuzhiyunadditionalProperties: false 44*4882a593Smuzhiyun 45*4882a593Smuzhiyunexamples: 46*4882a593Smuzhiyun - | 47*4882a593Smuzhiyun canvas: video-lut@48 { 48*4882a593Smuzhiyun compatible = "amlogic,canvas"; 49*4882a593Smuzhiyun reg = <0x48 0x14>; 50*4882a593Smuzhiyun }; 51*4882a593Smuzhiyun 52