Commit 18dfc0bf authored by Martin Blumenstingl's avatar Martin Blumenstingl Committed by Kevin Hilman
Browse files

dt-bindings: power: meson-ee-pwrc: add support for Meson8/8b/8m2 



The power domains on the 32-bit Meson8/Meson8b/Meson8m2 SoCs are very
similar to what G12A still uses. The (known) differences are:
- Meson8 doesn't use any reset lines at all
- Meson8b and Meson8m2 use the same reset lines, which are different
  from what the 64-bit SoCs use
- there is no "vapb" clock on the older SoCs
- amlogic,ao-sysctrl cannot point to the whole AO sysctrl region but
  only the power management related registers

Add a new compatible string and adjust clock and reset line expectations
for each SoC.

Signed-off-by: default avatarMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: default avatarKevin Hilman <khilman@baylibre.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200515204709.1505498-2-martin.blumenstingl@googlemail.com
parent 8f3d9f35

Documentation/devicetree/bindings/power/amlogic,meson-ee-pwrc.yaml

+59 −15
Original line number Diff line number Diff line
@@ -23,13 +23,19 @@ description: |+ 
properties:

  compatible:

    enum:

      - amlogic,meson8-pwrc

      - amlogic,meson8b-pwrc

      - amlogic,meson8m2-pwrc

      - amlogic,meson-g12a-pwrc

      - amlogic,meson-sm1-pwrc



  clocks:

    minItems: 2

    minItems: 1

    maxItems: 2



  clock-names:

    minItems: 1

    maxItems: 2

    items:

      - const: vpu

      - const: vapb
@@ -37,6 +43,51 @@ properties: 
  resets:

    minItems: 11



  reset-names:

    minItems: 11



  "#power-domain-cells":

    const: 1



  amlogic,ao-sysctrl:

    description: phandle to the AO sysctrl node

    allOf:

      - $ref: /schemas/types.yaml#/definitions/phandle



allOf:

  - if:

      properties:

        compatible:

          enum:

            - amlogic,meson8b-pwrc

            - amlogic,meson8m2-pwrc

    then:

      properties:

        reset-names:

          items:

            - const: dblk

            - const: pic_dc

            - const: hdmi_apb

            - const: hdmi_system

            - const: venci

            - const: vencp

            - const: vdac

            - const: vencl

            - const: viu

            - const: venc

            - const: rdma

      required:

        - resets

        - reset-names



  - if:

      properties:

        compatible:

          enum:

            - amlogic,meson-g12a-pwrc

            - amlogic,meson-sm1-pwrc

    then:

      properties:

        reset-names:

          items:

            - const: viu
@@ -50,21 +101,14 @@ properties: 
            - const: vdi6

            - const: vencl

            - const: vid_lock



  "#power-domain-cells":

    const: 1



  amlogic,ao-sysctrl:

    description: phandle to the AO sysctrl node

    allOf:

      - $ref: /schemas/types.yaml#/definitions/phandle

      required:

        - resets

        - reset-names



required:

  - compatible

  - clocks

  - clock-names

  - resets

  - reset-names

  - "#power-domain-cells"

  - amlogic,ao-sysctrl

include/dt-bindings/power/meson8-power.h

0 → 100644
+13 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: (GPL-2.0+ or MIT) */

/*

 * Copyright (c) 2019 Martin Blumenstingl <martin.blumenstingl@googlemail.com>

 */



#ifndef _DT_BINDINGS_MESON8_POWER_H

#define _DT_BINDINGS_MESON8_POWER_H



#define PWRC_MESON8_VPU_ID			0

#define PWRC_MESON8_ETHERNET_MEM_ID		1

#define PWRC_MESON8_AUDIO_DSP_MEM_ID		2



#endif /* _DT_BINDINGS_MESON8_POWER_H */