Re: [PATCH v14 02/11] dt-bindings: soc: Add MT8183 power dt-bindings

From: Weiyi Lu
Date: Mon May 11 2020 - 02:01:33 EST



On Wed, 2020-05-06 at 23:00 +0200, Enric Balletbo i Serra wrote:
> Hi Weiyi,
>
> Thank you for your patch. You should cc devicetree@xxxxxxxxxxxxxxx, otherwise
> this patch might be ignored.
>

Got it.

> On 6/5/20 10:15, Weiyi Lu wrote:
> > Add power dt-bindings of MT8183 and introduces "BASIC" and
> > "SUBSYS" clock types in binding document.
> > The "BASIC" type is compatible to the original power control with
> > clock name [a-z]+[0-9]*, e.g. mm, vpu1.
> > The "SUBSYS" type is used for bus protection control with clock
> > name [a-z]+-[0-9]+, e.g. isp-0, cam-1.
> > And add an optional smi-comm property for phandle to smi-common
> > controller.
> >
> > Signed-off-by: Weiyi Lu <weiyi.lu@xxxxxxxxxxxx>
> > ---
> > .../devicetree/bindings/soc/mediatek/scpsys.txt | 21 ++++++++++++++---
> > include/dt-bindings/power/mt8183-power.h | 26 ++++++++++++++++++++++
> > 2 files changed, 44 insertions(+), 3 deletions(-)
> > create mode 100644 include/dt-bindings/power/mt8183-power.h
> >
> > diff --git a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
> > index 2bc3677..5424e66 100644
> > --- a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
> > +++ b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
> > @@ -15,6 +15,7 @@ power/power-domain.yaml. It provides the power domains defined in
> > - include/dt-bindings/power/mt2701-power.h
> > - include/dt-bindings/power/mt2712-power.h
> > - include/dt-bindings/power/mt7622-power.h
> > +- include/dt-bindings/power/mt8183-power.h
> >
> > Required properties:
> > - compatible: Should be one of:
> > @@ -27,12 +28,16 @@ Required properties:
> > - "mediatek,mt7623a-scpsys": For MT7623A SoC
> > - "mediatek,mt7629-scpsys", "mediatek,mt7622-scpsys": For MT7629 SoC
> > - "mediatek,mt8173-scpsys"
> > + - "mediatek,mt8183-scpsys"
> > - #power-domain-cells: Must be 1
> > - reg: Address range of the SCPSYS unit
> > - infracfg: must contain a phandle to the infracfg controller
> > -- clock, clock-names: clocks according to the common clock binding.
> > - These are clocks which hardware needs to be
> > - enabled before enabling certain power domains.
> > +- clock, clock-names: Clocks according to the common clock binding.
> > + Some SoCs have to groups of clocks.
> > + BASIC clocks need to be enabled before enabling the
> > + corresponding power domain.
> > + SUBSYS clocks need to be enabled before releasing the
> > + bus protection.
> > Required clocks for MT2701 or MT7623: "mm", "mfg", "ethif"
> > Required clocks for MT2712: "mm", "mfg", "venc", "jpgdec", "audio", "vdec"
> > Required clocks for MT6765: MUX: "mm", "mfg"
> > @@ -43,6 +48,15 @@ Required properties:
> > Required clocks for MT7622 or MT7629: "hif_sel"
> > Required clocks for MT7623A: "ethif"
> > Required clocks for MT8173: "mm", "mfg", "venc", "venc_lt"
> > + Required clocks for MT8183: BASIC: "audio", "mfg", "mm", "cam", "isp",
> > + "vpu", "vpu1", "vpu2", "vpu3"
> > + SUBSYS: "mm-0", "mm-1", "mm-2", "mm-3",
> > + "mm-4", "mm-5", "mm-6", "mm-7",
> > + "mm-8", "mm-9", "isp-0", "isp-1",
> > + "cam-0", "cam-1", "cam-2", "cam-3",
> > + "cam-4", "cam-5", "cam-6", "vpu-0",
> > + "vpu-1", "vpu-2", "vpu-3", "vpu-4",
> > + "vpu-5"
> >
> > Optional properties:
> > - vdec-supply: Power supply for the vdec power domain
> > @@ -55,6 +69,7 @@ Optional properties:
> > - mfg_async-supply: Power supply for the mfg_async power domain
> > - mfg_2d-supply: Power supply for the mfg_2d power domain
> > - mfg-supply: Power supply for the mfg power domain
> > +- smi_comm: a phandle to the smi-common controller
>
>
> I think that in device-tree hyphen are preferred and kind of a must for new
> properties, also I think you should prefix this property with "mediatek,". Can I
> suggest you to use "mediatek,smi" like is done in the mediatek,smi-larb binding?
> AFAICS is the same phandle right?
>
> Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt:
> - mediatek,smi : a phandle to the smi_common node.
>

Thanks, I'll follow your suggestion in next version.

>
> >
> > Example:
> >
> > diff --git a/include/dt-bindings/power/mt8183-power.h b/include/dt-bindings/power/mt8183-power.h
> > new file mode 100644
> > index 0000000..d6b25f8
> > --- /dev/null
> > +++ b/include/dt-bindings/power/mt8183-power.h
> > @@ -0,0 +1,26 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * Copyright (c) 2018 MediaTek Inc.
>
> You probably want to update the copyright to 2020.
>

Thanks, I'll fix it.

> > + * Author: Weiyi Lu <weiyi.lu@xxxxxxxxxxxx>
> > + */
> > +
> > +#ifndef _DT_BINDINGS_POWER_MT8183_POWER_H
> > +#define _DT_BINDINGS_POWER_MT8183_POWER_H
> > +
> > +#define MT8183_POWER_DOMAIN_AUDIO 0
> > +#define MT8183_POWER_DOMAIN_CONN 1
> > +#define MT8183_POWER_DOMAIN_MFG_ASYNC 2
> > +#define MT8183_POWER_DOMAIN_MFG 3
> > +#define MT8183_POWER_DOMAIN_MFG_CORE0 4
> > +#define MT8183_POWER_DOMAIN_MFG_CORE1 5
> > +#define MT8183_POWER_DOMAIN_MFG_2D 6
> > +#define MT8183_POWER_DOMAIN_DISP 7
> > +#define MT8183_POWER_DOMAIN_CAM 8
> > +#define MT8183_POWER_DOMAIN_ISP 9
> > +#define MT8183_POWER_DOMAIN_VDEC 10
> > +#define MT8183_POWER_DOMAIN_VENC 11
> > +#define MT8183_POWER_DOMAIN_VPU_TOP 12
> > +#define MT8183_POWER_DOMAIN_VPU_CORE0 13
> > +#define MT8183_POWER_DOMAIN_VPU_CORE1 14
> > +
> > +#endif /* _DT_BINDINGS_POWER_MT8183_POWER_H */
> >
>
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