LinuxTV Patchwork [v9,05/13] media: dt-bindings: add bindings for i.MX7 media driver

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Submitter Rui Miguel Silva
Date Nov. 22, 2018, 3:18 p.m.
Message ID <20181122151834.6194-6-rui.silva@linaro.org>
Download mbox | patch
Permalink /patch/53095/
State Changes Requested
Delegated to: Hans Verkuil
Headers show

Comments

Rui Miguel Silva - Nov. 22, 2018, 3:18 p.m.
Add bindings documentation for i.MX7 media drivers.
The imx7 MIPI CSI2 and imx7 CMOS Sensor Interface.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 .../devicetree/bindings/media/imx7-csi.txt    | 45 ++++++++++
 .../bindings/media/imx7-mipi-csi2.txt         | 90 +++++++++++++++++++
 2 files changed, 135 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/imx7-csi.txt
 create mode 100644 Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt
Hans Verkuil - Dec. 7, 2018, 12:39 p.m.
On 11/22/2018 04:18 PM, Rui Miguel Silva wrote:
> Add bindings documentation for i.MX7 media drivers.
> The imx7 MIPI CSI2 and imx7 CMOS Sensor Interface.
> 
> Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
> Reviewed-by: Rob Herring <robh@kernel.org>
> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>

Please move this patch to the beginning of the series to avoid
checkpatch warnings:

WARNING: DT compatible string "fsl,imx7-csi" appears un-documented -- check ./Documentation/devicetree/bindings/
#1378: FILE: drivers/staging/media/imx/imx7-media-csi.c:1336:
+       { .compatible = "fsl,imx7-csi" },

Thanks!

	Hans


> ---
>  .../devicetree/bindings/media/imx7-csi.txt    | 45 ++++++++++
>  .../bindings/media/imx7-mipi-csi2.txt         | 90 +++++++++++++++++++
>  2 files changed, 135 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/imx7-csi.txt
>  create mode 100644 Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt
> 
> diff --git a/Documentation/devicetree/bindings/media/imx7-csi.txt b/Documentation/devicetree/bindings/media/imx7-csi.txt
> new file mode 100644
> index 000000000000..3c07bc676bc3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/imx7-csi.txt
> @@ -0,0 +1,45 @@
> +Freescale i.MX7 CMOS Sensor Interface
> +=====================================
> +
> +csi node
> +--------
> +
> +This is device node for the CMOS Sensor Interface (CSI) which enables the chip
> +to connect directly to external CMOS image sensors.
> +
> +Required properties:
> +
> +- compatible    : "fsl,imx7-csi";
> +- reg           : base address and length of the register set for the device;
> +- interrupts    : should contain CSI interrupt;
> +- clocks        : list of clock specifiers, see
> +        Documentation/devicetree/bindings/clock/clock-bindings.txt for details;
> +- clock-names   : must contain "axi", "mclk" and "dcic" entries, matching
> +                 entries in the clock property;
> +
> +The device node shall contain one 'port' child node with one child 'endpoint'
> +node, according to the bindings defined in:
> +Documentation/devicetree/bindings/media/video-interfaces.txt.
> +
> +In the following example a remote endpoint is a video multiplexer.
> +
> +example:
> +
> +                csi: csi@30710000 {
> +                        #address-cells = <1>;
> +                        #size-cells = <0>;
> +
> +                        compatible = "fsl,imx7-csi";
> +                        reg = <0x30710000 0x10000>;
> +                        interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
> +                        clocks = <&clks IMX7D_CLK_DUMMY>,
> +                                        <&clks IMX7D_CSI_MCLK_ROOT_CLK>,
> +                                        <&clks IMX7D_CLK_DUMMY>;
> +                        clock-names = "axi", "mclk", "dcic";
> +
> +                        port {
> +                                csi_from_csi_mux: endpoint {
> +                                        remote-endpoint = <&csi_mux_to_csi>;
> +                                };
> +                        };
> +                };
> diff --git a/Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt b/Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt
> new file mode 100644
> index 000000000000..71fd74ed3ec8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt
> @@ -0,0 +1,90 @@
> +Freescale i.MX7 Mipi CSI2
> +=========================
> +
> +mipi_csi2 node
> +--------------
> +
> +This is the device node for the MIPI CSI-2 receiver core in i.MX7 SoC. It is
> +compatible with previous version of Samsung D-phy.
> +
> +Required properties:
> +
> +- compatible    : "fsl,imx7-mipi-csi2";
> +- reg           : base address and length of the register set for the device;
> +- interrupts    : should contain MIPI CSIS interrupt;
> +- clocks        : list of clock specifiers, see
> +        Documentation/devicetree/bindings/clock/clock-bindings.txt for details;
> +- clock-names   : must contain "pclk", "wrap" and "phy" entries, matching
> +                  entries in the clock property;
> +- power-domains : a phandle to the power domain, see
> +          Documentation/devicetree/bindings/power/power_domain.txt for details.
> +- reset-names   : should include following entry "mrst";
> +- resets        : a list of phandle, should contain reset entry of
> +                  reset-names;
> +- phy-supply    : from the generic phy bindings, a phandle to a regulator that
> +	          provides power to MIPI CSIS core;
> +
> +Optional properties:
> +
> +- clock-frequency : The IP's main (system bus) clock frequency in Hz, default
> +		    value when this property is not specified is 166 MHz;
> +- fsl,csis-hs-settle : differential receiver (HS-RX) settle time;
> +
> +The device node should contain two 'port' child nodes with one child 'endpoint'
> +node, according to the bindings defined in:
> + Documentation/devicetree/bindings/ media/video-interfaces.txt.
> + The following are properties specific to those nodes.
> +
> +port node
> +---------
> +
> +- reg		  : (required) can take the values 0 or 1, where 0 shall be
> +                     related to the sink port and port 1 shall be the source
> +                     one;
> +
> +endpoint node
> +-------------
> +
> +- data-lanes    : (required) an array specifying active physical MIPI-CSI2
> +		    data input lanes and their mapping to logical lanes; this
> +                    shall only be applied to port 0 (sink port), the array's
> +                    content is unused only its length is meaningful,
> +                    in this case the maximum length supported is 2;
> +
> +example:
> +
> +        mipi_csi: mipi-csi@30750000 {
> +                #address-cells = <1>;
> +                #size-cells = <0>;
> +
> +                compatible = "fsl,imx7-mipi-csi2";
> +                reg = <0x30750000 0x10000>;
> +                interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
> +                clocks = <&clks IMX7D_IPG_ROOT_CLK>,
> +                                <&clks IMX7D_MIPI_CSI_ROOT_CLK>,
> +                                <&clks IMX7D_MIPI_DPHY_ROOT_CLK>;
> +                clock-names = "pclk", "wrap", "phy";
> +                clock-frequency = <166000000>;
> +                power-domains = <&pgc_mipi_phy>;
> +                phy-supply = <&reg_1p0d>;
> +                resets = <&src IMX7_RESET_MIPI_PHY_MRST>;
> +                reset-names = "mrst";
> +                fsl,csis-hs-settle = <3>;
> +
> +                port@0 {
> +                        reg = <0>;
> +
> +                        mipi_from_sensor: endpoint {
> +                                remote-endpoint = <&ov2680_to_mipi>;
> +                                data-lanes = <1>;
> +                        };
> +                };
> +
> +                port@1 {
> +                        reg = <1>;
> +
> +                        mipi_vc0_to_csi_mux: endpoint {
> +                                remote-endpoint = <&csi_mux_from_mipi_vc0>;
> +                        };
> +                };
> +        };
>
Rui Miguel Silva - Dec. 7, 2018, 1:54 p.m.
Hi Hans,

On Fri 07 Dec 2018 at 12:39, Hans Verkuil wrote:
> On 11/22/2018 04:18 PM, Rui Miguel Silva wrote:
>> Add bindings documentation for i.MX7 media drivers.
>> The imx7 MIPI CSI2 and imx7 CMOS Sensor Interface.
>> 
>> Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
>> Reviewed-by: Rob Herring <robh@kernel.org>
>> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
>
> Please move this patch to the beginning of the series to avoid
> checkpatch warnings:
>
> WARNING: DT compatible string "fsl,imx7-csi" appears 
> un-documented -- check ./Documentation/devicetree/bindings/
> #1378: FILE: drivers/staging/media/imx/imx7-media-csi.c:1336:
> +       { .compatible = "fsl,imx7-csi" },

Will do, thanks for catching this one.

---
Cheers,
	Rui

>
> Thanks!
>
> 	Hans
>
>
>> ---
>>  .../devicetree/bindings/media/imx7-csi.txt    | 45 ++++++++++
>>  .../bindings/media/imx7-mipi-csi2.txt         | 90 
>>  +++++++++++++++++++
>>  2 files changed, 135 insertions(+)
>>  create mode 100644 
>>  Documentation/devicetree/bindings/media/imx7-csi.txt
>>  create mode 100644 
>>  Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt
>> 
>> diff --git 
>> a/Documentation/devicetree/bindings/media/imx7-csi.txt 
>> b/Documentation/devicetree/bindings/media/imx7-csi.txt
>> new file mode 100644
>> index 000000000000..3c07bc676bc3
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/media/imx7-csi.txt
>> @@ -0,0 +1,45 @@
>> +Freescale i.MX7 CMOS Sensor Interface
>> +=====================================
>> +
>> +csi node
>> +--------
>> +
>> +This is device node for the CMOS Sensor Interface (CSI) which 
>> enables the chip
>> +to connect directly to external CMOS image sensors.
>> +
>> +Required properties:
>> +
>> +- compatible    : "fsl,imx7-csi";
>> +- reg           : base address and length of the register set 
>> for the device;
>> +- interrupts    : should contain CSI interrupt;
>> +- clocks        : list of clock specifiers, see
>> + 
>> Documentation/devicetree/bindings/clock/clock-bindings.txt for 
>> details;
>> +- clock-names   : must contain "axi", "mclk" and "dcic" 
>> entries, matching
>> +                 entries in the clock property;
>> +
>> +The device node shall contain one 'port' child node with one 
>> child 'endpoint'
>> +node, according to the bindings defined in:
>> +Documentation/devicetree/bindings/media/video-interfaces.txt.
>> +
>> +In the following example a remote endpoint is a video 
>> multiplexer.
>> +
>> +example:
>> +
>> +                csi: csi@30710000 {
>> +                        #address-cells = <1>;
>> +                        #size-cells = <0>;
>> +
>> +                        compatible = "fsl,imx7-csi";
>> +                        reg = <0x30710000 0x10000>;
>> +                        interrupts = <GIC_SPI 7 
>> IRQ_TYPE_LEVEL_HIGH>;
>> +                        clocks = <&clks IMX7D_CLK_DUMMY>,
>> +                                        <&clks 
>> IMX7D_CSI_MCLK_ROOT_CLK>,
>> +                                        <&clks 
>> IMX7D_CLK_DUMMY>;
>> +                        clock-names = "axi", "mclk", "dcic";
>> +
>> +                        port {
>> +                                csi_from_csi_mux: endpoint {
>> +                                        remote-endpoint = 
>> <&csi_mux_to_csi>;
>> +                                };
>> +                        };
>> +                };
>> diff --git 
>> a/Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt 
>> b/Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt
>> new file mode 100644
>> index 000000000000..71fd74ed3ec8
>> --- /dev/null
>> +++ 
>> b/Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt
>> @@ -0,0 +1,90 @@
>> +Freescale i.MX7 Mipi CSI2
>> +=========================
>> +
>> +mipi_csi2 node
>> +--------------
>> +
>> +This is the device node for the MIPI CSI-2 receiver core in 
>> i.MX7 SoC. It is
>> +compatible with previous version of Samsung D-phy.
>> +
>> +Required properties:
>> +
>> +- compatible    : "fsl,imx7-mipi-csi2";
>> +- reg           : base address and length of the register set 
>> for the device;
>> +- interrupts    : should contain MIPI CSIS interrupt;
>> +- clocks        : list of clock specifiers, see
>> + 
>> Documentation/devicetree/bindings/clock/clock-bindings.txt for 
>> details;
>> +- clock-names   : must contain "pclk", "wrap" and "phy" 
>> entries, matching
>> +                  entries in the clock property;
>> +- power-domains : a phandle to the power domain, see
>> + 
>> Documentation/devicetree/bindings/power/power_domain.txt for 
>> details.
>> +- reset-names   : should include following entry "mrst";
>> +- resets        : a list of phandle, should contain reset 
>> entry of
>> +                  reset-names;
>> +- phy-supply    : from the generic phy bindings, a phandle to 
>> a regulator that
>> +	          provides power to MIPI CSIS core;
>> +
>> +Optional properties:
>> +
>> +- clock-frequency : The IP's main (system bus) clock frequency 
>> in Hz, default
>> +		    value when this property is not specified is 
>> 166 MHz;
>> +- fsl,csis-hs-settle : differential receiver (HS-RX) settle 
>> time;
>> +
>> +The device node should contain two 'port' child nodes with one 
>> child 'endpoint'
>> +node, according to the bindings defined in:
>> + Documentation/devicetree/bindings/ 
>> media/video-interfaces.txt.
>> + The following are properties specific to those nodes.
>> +
>> +port node
>> +---------
>> +
>> +- reg		  : (required) can take the values 0 or 1, 
>> where 0 shall be
>> +                     related to the sink port and port 1 shall 
>> be the source
>> +                     one;
>> +
>> +endpoint node
>> +-------------
>> +
>> +- data-lanes    : (required) an array specifying active 
>> physical MIPI-CSI2
>> +		    data input lanes and their mapping to logical 
>> lanes; this
>> +                    shall only be applied to port 0 (sink 
>> port), the array's
>> +                    content is unused only its length is 
>> meaningful,
>> +                    in this case the maximum length supported 
>> is 2;
>> +
>> +example:
>> +
>> +        mipi_csi: mipi-csi@30750000 {
>> +                #address-cells = <1>;
>> +                #size-cells = <0>;
>> +
>> +                compatible = "fsl,imx7-mipi-csi2";
>> +                reg = <0x30750000 0x10000>;
>> +                interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
>> +                clocks = <&clks IMX7D_IPG_ROOT_CLK>,
>> +                                <&clks 
>> IMX7D_MIPI_CSI_ROOT_CLK>,
>> +                                <&clks 
>> IMX7D_MIPI_DPHY_ROOT_CLK>;
>> +                clock-names = "pclk", "wrap", "phy";
>> +                clock-frequency = <166000000>;
>> +                power-domains = <&pgc_mipi_phy>;
>> +                phy-supply = <&reg_1p0d>;
>> +                resets = <&src IMX7_RESET_MIPI_PHY_MRST>;
>> +                reset-names = "mrst";
>> +                fsl,csis-hs-settle = <3>;
>> +
>> +                port@0 {
>> +                        reg = <0>;
>> +
>> +                        mipi_from_sensor: endpoint {
>> +                                remote-endpoint = 
>> <&ov2680_to_mipi>;
>> +                                data-lanes = <1>;
>> +                        };
>> +                };
>> +
>> +                port@1 {
>> +                        reg = <1>;
>> +
>> +                        mipi_vc0_to_csi_mux: endpoint {
>> +                                remote-endpoint = 
>> <&csi_mux_from_mipi_vc0>;
>> +                        };
>> +                };
>> +        };
>>

Patch

diff --git a/Documentation/devicetree/bindings/media/imx7-csi.txt b/Documentation/devicetree/bindings/media/imx7-csi.txt
new file mode 100644
index 000000000000..3c07bc676bc3
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/imx7-csi.txt
@@ -0,0 +1,45 @@ 
+Freescale i.MX7 CMOS Sensor Interface
+=====================================
+
+csi node
+--------
+
+This is device node for the CMOS Sensor Interface (CSI) which enables the chip
+to connect directly to external CMOS image sensors.
+
+Required properties:
+
+- compatible    : "fsl,imx7-csi";
+- reg           : base address and length of the register set for the device;
+- interrupts    : should contain CSI interrupt;
+- clocks        : list of clock specifiers, see
+        Documentation/devicetree/bindings/clock/clock-bindings.txt for details;
+- clock-names   : must contain "axi", "mclk" and "dcic" entries, matching
+                 entries in the clock property;
+
+The device node shall contain one 'port' child node with one child 'endpoint'
+node, according to the bindings defined in:
+Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+In the following example a remote endpoint is a video multiplexer.
+
+example:
+
+                csi: csi@30710000 {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        compatible = "fsl,imx7-csi";
+                        reg = <0x30710000 0x10000>;
+                        interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
+                        clocks = <&clks IMX7D_CLK_DUMMY>,
+                                        <&clks IMX7D_CSI_MCLK_ROOT_CLK>,
+                                        <&clks IMX7D_CLK_DUMMY>;
+                        clock-names = "axi", "mclk", "dcic";
+
+                        port {
+                                csi_from_csi_mux: endpoint {
+                                        remote-endpoint = <&csi_mux_to_csi>;
+                                };
+                        };
+                };
diff --git a/Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt b/Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt
new file mode 100644
index 000000000000..71fd74ed3ec8
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt
@@ -0,0 +1,90 @@ 
+Freescale i.MX7 Mipi CSI2
+=========================
+
+mipi_csi2 node
+--------------
+
+This is the device node for the MIPI CSI-2 receiver core in i.MX7 SoC. It is
+compatible with previous version of Samsung D-phy.
+
+Required properties:
+
+- compatible    : "fsl,imx7-mipi-csi2";
+- reg           : base address and length of the register set for the device;
+- interrupts    : should contain MIPI CSIS interrupt;
+- clocks        : list of clock specifiers, see
+        Documentation/devicetree/bindings/clock/clock-bindings.txt for details;
+- clock-names   : must contain "pclk", "wrap" and "phy" entries, matching
+                  entries in the clock property;
+- power-domains : a phandle to the power domain, see
+          Documentation/devicetree/bindings/power/power_domain.txt for details.
+- reset-names   : should include following entry "mrst";
+- resets        : a list of phandle, should contain reset entry of
+                  reset-names;
+- phy-supply    : from the generic phy bindings, a phandle to a regulator that
+	          provides power to MIPI CSIS core;
+
+Optional properties:
+
+- clock-frequency : The IP's main (system bus) clock frequency in Hz, default
+		    value when this property is not specified is 166 MHz;
+- fsl,csis-hs-settle : differential receiver (HS-RX) settle time;
+
+The device node should contain two 'port' child nodes with one child 'endpoint'
+node, according to the bindings defined in:
+ Documentation/devicetree/bindings/ media/video-interfaces.txt.
+ The following are properties specific to those nodes.
+
+port node
+---------
+
+- reg		  : (required) can take the values 0 or 1, where 0 shall be
+                     related to the sink port and port 1 shall be the source
+                     one;
+
+endpoint node
+-------------
+
+- data-lanes    : (required) an array specifying active physical MIPI-CSI2
+		    data input lanes and their mapping to logical lanes; this
+                    shall only be applied to port 0 (sink port), the array's
+                    content is unused only its length is meaningful,
+                    in this case the maximum length supported is 2;
+
+example:
+
+        mipi_csi: mipi-csi@30750000 {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                compatible = "fsl,imx7-mipi-csi2";
+                reg = <0x30750000 0x10000>;
+                interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
+                clocks = <&clks IMX7D_IPG_ROOT_CLK>,
+                                <&clks IMX7D_MIPI_CSI_ROOT_CLK>,
+                                <&clks IMX7D_MIPI_DPHY_ROOT_CLK>;
+                clock-names = "pclk", "wrap", "phy";
+                clock-frequency = <166000000>;
+                power-domains = <&pgc_mipi_phy>;
+                phy-supply = <&reg_1p0d>;
+                resets = <&src IMX7_RESET_MIPI_PHY_MRST>;
+                reset-names = "mrst";
+                fsl,csis-hs-settle = <3>;
+
+                port@0 {
+                        reg = <0>;
+
+                        mipi_from_sensor: endpoint {
+                                remote-endpoint = <&ov2680_to_mipi>;
+                                data-lanes = <1>;
+                        };
+                };
+
+                port@1 {
+                        reg = <1>;
+
+                        mipi_vc0_to_csi_mux: endpoint {
+                                remote-endpoint = <&csi_mux_from_mipi_vc0>;
+                        };
+                };
+        };

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