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Date: Thu, 18 Feb 2021 09:40:28 +0800
From: Weiyi Lu <weiyi.lu@...iatek.com>
To: Matthias Brugger <matthias.bgg@...il.com>
CC: Rob Herring <robh@...nel.org>, Stephen Boyd <sboyd@...nel.org>,
"Nicolas Boichat" <drinkcat@...omium.org>,
<srv_heupstream@...iatek.com>, <linux-kernel@...r.kernel.org>,
<Project_Global_Chrome_Upstream_Group@...iatek.com>,
<linux-mediatek@...ts.infradead.org>, <linux-clk@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v6 01/22] dt-bindings: ARM: Mediatek: Add new document
bindings of imp i2c wrapper controller
On Wed, 2021-02-10 at 13:19 +0100, Matthias Brugger wrote:
>
> On 22/12/2020 14:09, Weiyi Lu wrote:
> > This patch adds the new binding documentation of imp i2c wrapper controller
> > for Mediatek MT8192.
>
> The wrapper controller has only clock parts, or are the clock register mapped
> into the i2c wrapper block. In that case we might want to probe the clock driver
> through the i2c wrapper driver.
>
> Regards,
> Matthias
>
Yes, the clock registers are mapped into partial of the i2c wrapper
block.
AFAIK, the i2c wrapper works with the i2c
driver(i2c/busses/i2c-mt65xx.c) but not a new driver.
So do you still suggest us to probe the clock driver through the i2c
driver(i2c/busses/i2c-mt65xx.c) just like the mtk-mm driver?
> >
> > Signed-off-by: Weiyi Lu <weiyi.lu@...iatek.com>
> > ---
> > .../arm/mediatek/mediatek,imp_iic_wrap.yaml | 78 ++++++++++++++++++++++
> > 1 file changed, 78 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,imp_iic_wrap.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,imp_iic_wrap.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,imp_iic_wrap.yaml
> > new file mode 100644
> > index 0000000..5d0cf37
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,imp_iic_wrap.yaml
> > @@ -0,0 +1,78 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/arm/mediatek/mediatek,imp_iic_wrap.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: MediaTek IMP I2C Wrapper Controller
> > +
> > +maintainers:
> > + - Weiyi Lu <weiyi.lu@...iatek.com>
> > +
> > +description:
> > + The Mediatek imp i2c wrapper controller provides functional configurations and clocks to the system.
> > +
> > +properties:
> > + compatible:
> > + items:
> > + - enum:
> > + - mediatek,mt8192-imp_iic_wrap_c
> > + - mediatek,mt8192-imp_iic_wrap_e
> > + - mediatek,mt8192-imp_iic_wrap_s
> > + - mediatek,mt8192-imp_iic_wrap_ws
> > + - mediatek,mt8192-imp_iic_wrap_w
> > + - mediatek,mt8192-imp_iic_wrap_n
> > + - const: syscon
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + '#clock-cells':
> > + const: 1
> > +
> > +required:
> > + - compatible
> > + - reg
> > +
> > +examples:
> > + - |
> > + imp_iic_wrap_c: syscon@...07000 {
> > + compatible = "mediatek,mt8192-imp_iic_wrap_c", "syscon";
> > + reg = <0 0x11007000 0 0x1000>;
> > + #clock-cells = <1>;
> > + };
> > +
> > + - |
> > + imp_iic_wrap_e: syscon@...b1000 {
> > + compatible = "mediatek,mt8192-imp_iic_wrap_e", "syscon";
> > + reg = <0 0x11cb1000 0 0x1000>;
> > + #clock-cells = <1>;
> > + };
> > +
> > + - |
> > + imp_iic_wrap_s: syscon@...03000 {
> > + compatible = "mediatek,mt8192-imp_iic_wrap_s", "syscon";
> > + reg = <0 0x11d03000 0 0x1000>;
> > + #clock-cells = <1>;
> > + };
> > +
> > + - |
> > + imp_iic_wrap_ws: syscon@...23000 {
> > + compatible = "mediatek,mt8192-imp_iic_wrap_ws", "syscon";
> > + reg = <0 0x11d23000 0 0x1000>;
> > + #clock-cells = <1>;
> > + };
> > +
> > + - |
> > + imp_iic_wrap_w: syscon@...01000 {
> > + compatible = "mediatek,mt8192-imp_iic_wrap_w", "syscon";
> > + reg = <0 0x11e01000 0 0x1000>;
> > + #clock-cells = <1>;
> > + };
> > +
> > + - |
> > + imp_iic_wrap_n: syscon@...02000 {
> > + compatible = "mediatek,mt8192-imp_iic_wrap_n", "syscon";
> > + reg = <0 0x11f02000 0 0x1000>;
> > + #clock-cells = <1>;
> > + };
> >
>
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