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Message-ID: <ec2d1c4e9f68f86034ba2f9783bcaeab166a3b2e.camel@nxp.com>
Date: Wed, 17 Mar 2021 10:04:15 +0800
From: Liu Ying <victor.liu@....com>
To: Rob Herring <robh@...nel.org>
Cc: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-media@...r.kernel.org, airlied@...ux.ie, daniel@...ll.ch,
shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
festevam@...il.com, linux-imx@....com, mchehab@...nel.org,
a.hajda@...sung.com, narmstrong@...libre.com,
Laurent.pinchart@...asonboard.com, jonas@...boo.se,
jernej.skrabec@...l.net, kishon@...com, vkoul@...nel.org,
robert.foss@...aro.org, lee.jones@...aro.org
Subject: Re: [PATCH v5 07/14] dt-bindings: mfd: Add i.MX8qm/qxp Control and
Status Registers module binding
On Tue, 2021-03-16 at 16:38 -0600, Rob Herring wrote:
> On Wed, Mar 10, 2021 at 05:55:31PM +0800, Liu Ying wrote:
> > This patch adds bindings for i.MX8qm/qxp Control and Status Registers module.
> >
> > Signed-off-by: Liu Ying <victor.liu@....com>
> > ---
> > v4->v5:
> > * Newly introduced in v5. (Rob)
> >
> > .../devicetree/bindings/mfd/fsl,imx8qxp-csr.yaml | 202 +++++++++++++++++++++
> > 1 file changed, 202 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/mfd/fsl,imx8qxp-csr.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/mfd/fsl,imx8qxp-csr.yaml b/Documentation/devicetree/bindings/mfd/fsl,imx8qxp-csr.yaml
> > new file mode 100644
> > index 00000000..0e724d9
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/mfd/fsl,imx8qxp-csr.yaml
> > @@ -0,0 +1,202 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevicetree.org%2Fschemas%2Fmfd%2Ffsl%2Cimx8qxp-csr.yaml%23&data=04%7C01%7Cvictor.liu%40nxp.com%7C8ee75a0dde484a3d221608d8e8cc47f6%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C637515311382184508%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=fkym85OLtd5cA%2FdwJkXUbiR0EwkZX4yP4INsAaCywUo%3D&reserved=0
> > +$schema: https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevicetree.org%2Fmeta-schemas%2Fcore.yaml%23&data=04%7C01%7Cvictor.liu%40nxp.com%7C8ee75a0dde484a3d221608d8e8cc47f6%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C637515311382184508%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=3n2mTxsUNF480D9xQQuXj7U0noiLCUBT3zneyWPr6ck%3D&reserved=0
> > +
> > +title: Freescale i.MX8qm/qxp Control and Status Registers Module Bindings
> > +
> > +maintainers:
> > + - Liu Ying <victor.liu@....com>
> > +
> > +description: |
> > + As a system controller, the Freescale i.MX8qm/qxp Control and Status
> > + Registers(CSR) module represents a set of miscellaneous registers of a
> > + specific subsystem. It may provide control and/or status report interfaces
> > + to a mix of standalone hardware devices within that subsystem. One typical
> > + use-case is for some other nodes to acquire a reference to the syscon node
> > + by phandle, and the other typical use-case is that the operating system
> > + should consider all subnodes of the CSR module as separate child devices.
> > +
> > +select:
> > + properties:
> > + compatible:
> > + contains:
> > + enum:
> > + - fsl,imx8qxp-mipi-lvds-csr
> > + - fsl,imx8qm-lvds-csr
>
> You shouldn't need this, we filter out 'syscon' and 'simple-mfd'.
Will drop this in next version. Thanks.
Liu Ying
>
> > + required:
> > + - compatible
> > +
> > +properties:
> > + $nodename:
> > + pattern: "^syscon@[0-9a-f]+$"
> > +
> > + compatible:
> > + items:
> > + - enum:
> > + - fsl,imx8qxp-mipi-lvds-csr
> > + - fsl,imx8qm-lvds-csr
> > + - const: syscon
> > + - const: simple-mfd
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + clocks:
> > + maxItems: 1
> > +
> > + clock-names:
> > + const: ipg
> > +
> > +patternProperties:
> > + "^(ldb|phy|pxl2dpi)$":
> > + type: object
> > + description: The possible child devices of the CSR module.
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - clocks
> > + - clock-names
> > +
> > +allOf:
> > + - if:
> > + properties:
> > + compatible:
> > + contains:
> > + const: fsl,imx8qxp-mipi-lvds-csr
> > + then:
> > + required:
> > + - pxl2dpi
> > + - ldb
> > +
> > + - if:
> > + properties:
> > + compatible:
> > + contains:
> > + const: fsl,imx8qm-lvds-csr
> > + then:
> > + required:
> > + - phy
> > + - ldb
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/clock/imx8-lpcg.h>
> > + #include <dt-bindings/firmware/imx/rsrc.h>
> > + mipi_lvds_0_csr: syscon@...21000 {
> > + compatible = "fsl,imx8qxp-mipi-lvds-csr", "syscon", "simple-mfd";
> > + reg = <0x56221000 0x1000>;
> > + clocks = <&mipi_lvds_0_di_mipi_lvds_regs_lpcg IMX_LPCG_CLK_4>;
> > + clock-names = "ipg";
> > +
> > + mipi_lvds_0_pxl2dpi: pxl2dpi {
> > + compatible = "fsl,imx8qxp-pxl2dpi";
> > + fsl,sc-resource = <IMX_SC_R_MIPI_0>;
> > + power-domains = <&pd IMX_SC_R_MIPI_0>;
> > +
> > + ports {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + port@0 {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + reg = <0>;
> > +
> > + mipi_lvds_0_pxl2dpi_dc0_pixel_link0: endpoint@0 {
> > + reg = <0>;
> > + remote-endpoint = <&dc0_pixel_link0_mipi_lvds_0_pxl2dpi>;
> > + };
> > +
> > + mipi_lvds_0_pxl2dpi_dc0_pixel_link1: endpoint@1 {
> > + reg = <1>;
> > + remote-endpoint = <&dc0_pixel_link1_mipi_lvds_0_pxl2dpi>;
> > + };
> > + };
> > +
> > + port@1 {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + reg = <1>;
> > +
> > + mipi_lvds_0_pxl2dpi_mipi_lvds_0_ldb_ch0: endpoint@0 {
> > + reg = <0>;
> > + remote-endpoint = <&mipi_lvds_0_ldb_ch0_mipi_lvds_0_pxl2dpi>;
> > + };
> > +
> > + mipi_lvds_0_pxl2dpi_mipi_lvds_0_ldb_ch1: endpoint@1 {
> > + reg = <1>;
> > + remote-endpoint = <&mipi_lvds_0_ldb_ch1_mipi_lvds_0_pxl2dpi>;
> > + };
> > + };
> > + };
> > + };
> > +
> > + mipi_lvds_0_ldb: ldb {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + compatible = "fsl,imx8qxp-ldb";
> > + clocks = <&clk IMX_SC_R_LVDS_0 IMX_SC_PM_CLK_MISC2>,
> > + <&clk IMX_SC_R_LVDS_0 IMX_SC_PM_CLK_BYPASS>;
> > + clock-names = "pixel", "bypass";
> > + power-domains = <&pd IMX_SC_R_LVDS_0>;
> > +
> > + channel@0 {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + reg = <0>;
> > + phys = <&mipi_lvds_0_phy>;
> > + phy-names = "lvds_phy";
> > +
> > + port@0 {
> > + reg = <0>;
> > +
> > + mipi_lvds_0_ldb_ch0_mipi_lvds_0_pxl2dpi: endpoint {
> > + remote-endpoint = <&mipi_lvds_0_pxl2dpi_mipi_lvds_0_ldb_ch0>;
> > + };
> > + };
> > +
> > + port@1 {
> > + reg = <1>;
> > +
> > + /* ... */
> > + };
> > + };
> > +
> > + channel@1 {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + reg = <1>;
> > + phys = <&mipi_lvds_0_phy>;
> > + phy-names = "lvds_phy";
> > +
> > + port@0 {
> > + reg = <0>;
> > +
> > + mipi_lvds_0_ldb_ch1_mipi_lvds_0_pxl2dpi: endpoint {
> > + remote-endpoint = <&mipi_lvds_0_pxl2dpi_mipi_lvds_0_ldb_ch1>;
> > + };
> > + };
> > +
> > + port@1 {
> > + reg = <1>;
> > +
> > + /* ... */
> > + };
> > + };
> > + };
> > + };
> > +
> > + mipi_lvds_0_phy: phy@...28300 {
> > + compatible = "fsl,imx8qxp-mipi-dphy";
> > + reg = <0x56228300 0x100>;
> > + clocks = <&clk IMX_SC_R_LVDS_0 IMX_SC_PM_CLK_PHY>;
> > + clock-names = "phy_ref";
> > + #phy-cells = <0>;
> > + fsl,syscon = <&mipi_lvds_0_csr>;
> > + power-domains = <&pd IMX_SC_R_MIPI_0>;
> > + };
> > --
> > 2.7.4
> >
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