add "WITH Linux-syscall-note" to SPDX tag of uapi headers

Documentation/admin-guide/media/starfive_camss.rst

@@ -0,0 +1,68 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+.. include:: <isonum.txt>
+
+================================
+Starfive Camera Subsystem driver
+================================
+
+Introduction
+------------
+
+This file documents the driver for the Starfive Camera Subsystem found on
+Starfive JH7110 SoC. The driver is located under drivers/media/platform/starfive.
+
+The driver implements V4L2, Media controller and v4l2_subdev interfaces.
+Camera sensor using V4L2 subdev interface in the kernel is supported.
+
+The driver has been successfully used on the Gstreamer 1.18.5 with
+v4l2src plugin.
+
+
+Starfive Camera Subsystem hardware
+----------------------------------
+
+The Starfive Camera Subsystem hardware consists of:
+
+- MIPI DPHY Receiver: receives mipi data from a MIPI camera sensor.
+- MIPI CSIRx Controller: is responsible for handling and decoding CSI2 protocol
+  based camera sensor data stream.
+- ISP: handles the image data streams from the MIPI CSIRx Controller.
+- VIN(Video In): a top-level module, is responsible for controlling power
+  and clocks to other modules, dumps the input data to memory or transfers the
+  input data to ISP.
+
+
+Topology
+--------
+
+The media controller pipeline graph is as follows:
+
+.. _starfive_camss_graph:
+
+.. kernel-figure:: starfive_camss_graph.dot
+    :alt:   starfive_camss_graph.dot
+    :align: center
+
+The driver has 5 video devices:
+
+- stf_vin0_wr_video0: capture device for images directly from the VIN module.
+- stf_vin0_isp0_video1: capture device for images without scaling.
+- stf_vin0_isp0_ss0_video2: capture device for images with adjustable
+  scale-down factor.
+- stf_vin0_isp0_ss1_video3: capture device for images with adjustable
+  scale-down factor.
+- stf_vin0_isp0_raw_video4: capture device for RAW images.
+
+The driver has 6 subdevices:
+
+- stf_isp0: is responsible for all the isp operations.
+- stf_vin0_wr: used to dump RAW images to memory.
+- stf_vin0_isp0: used to capture unscaled images for the stf_vin0_isp0_video1
+  device.
+- stf_vin0_isp0_ss0: used to resize and downsample frames for
+  the stf_vin0_isp0_ss0_video2 capture device.
+- stf_vin0_isp0_ss1: used to resize and downsample frames for
+  the stf_vin0_isp0_ss1_video3 capture device.
+- stf_vin0_isp0_raw: used to configure the camss ISP to get RAW
+  images for stf_vin0_isp0_raw_video4 capture device.

Documentation/admin-guide/media/starfive_camss_graph.dot

@@ -0,0 +1,28 @@
+digraph board {
+	rankdir=TB
+	n00000001 [label="{{<port0> 0} | stf_isp0\n/dev/v4l-subdev0 | {<port1> 1 | <port2> 2 | <port3> 3 | <port4> 4}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000001:port1 -> n00000010:port0
+	n00000001:port2 -> n00000019:port0 [style=dashed]
+	n00000001:port3 -> n00000022:port0 [style=dashed]
+	n00000001:port4 -> n0000002b:port0 [style=dashed]
+	n00000007 [label="{{<port0> 0} | stf_vin0_wr\n/dev/v4l-subdev1 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000007:port1 -> n0000000a [style=bold]
+	n0000000a [label="stf_vin0_wr_video0\n/dev/video0", shape=box, style=filled, fillcolor=yellow]
+	n00000010 [label="{{<port0> 0} | stf_vin0_isp0\n/dev/v4l-subdev2 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000010:port1 -> n00000013 [style=bold]
+	n00000013 [label="stf_vin0_isp0_video1\n/dev/video1", shape=box, style=filled, fillcolor=yellow]
+	n00000019 [label="{{<port0> 0} | stf_vin0_isp0_ss0\n/dev/v4l-subdev3 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000019:port1 -> n0000001c [style=bold]
+	n0000001c [label="stf_vin0_isp0_ss0_video2\n/dev/video2", shape=box, style=filled, fillcolor=yellow]
+	n00000022 [label="{{<port0> 0} | stf_vin0_isp0_ss1\n/dev/v4l-subdev4 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000022:port1 -> n00000025 [style=bold]
+	n00000025 [label="stf_vin0_isp0_ss1_video3\n/dev/video3", shape=box, style=filled, fillcolor=yellow]
+	n0000002b [label="{{<port0> 0} | stf_vin0_isp0_raw\n/dev/v4l-subdev5 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
+	n0000002b:port1 -> n0000002e [style=bold]
+	n0000002e [label="stf_vin0_isp0_raw_video4\n/dev/video4", shape=box, style=filled, fillcolor=yellow]
+	n0000003c [label="{{<port0> 0} | cdns_csi2rx.19800000.csi-bridge\n/dev/v4l-subdev6 | {<port1> 1 | <port2> 2 | <port3> 3 | <port4> 4}}", shape=Mrecord, style=filled, fillcolor=green]
+	n0000003c:port1 -> n00000007:port0 [style=dashed]
+	n0000003c:port1 -> n00000001:port0
+	n00000054 [label="{{} | imx219 6-0010\n/dev/v4l-subdev7 | {<port0> 0}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000054:port0 -> n0000003c:port0 [style=bold]
+}

Documentation/admin-guide/media/v4l-drivers.rst

@@ -27,6 +27,7 @@ Video4Linux (V4L) driver-specific documentation
 	si470x
 	si4713
 	si476x
+	starfive
 	vimc
 	visl
 	vivid

Documentation/devicetree/bindings/clock/starfive,jh7110-aoncrg.yaml

@@ -0,0 +1,107 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/starfive,jh7110-aoncrg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 Always-On Clock and Reset Generator
+
+maintainers:
+  - Emil Renner Berthing <kernel@esmil.dk>
+
+properties:
+  compatible:
+    const: starfive,jh7110-aoncrg
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    oneOf:
+      - items:
+          - description: Main Oscillator (24 MHz)
+          - description: GMAC0 RMII reference or GMAC0 RGMII RX
+          - description: STG AXI/AHB
+          - description: APB Bus
+          - description: GMAC0 GTX
+
+      - items:
+          - description: Main Oscillator (24 MHz)
+          - description: GMAC0 RMII reference or GMAC0 RGMII RX
+          - description: STG AXI/AHB or GMAC0 RGMII RX
+          - description: APB Bus or STG AXI/AHB
+          - description: GMAC0 GTX or APB Bus
+          - description: RTC Oscillator (32.768 kHz) or GMAC0 GTX
+
+      - items:
+          - description: Main Oscillator (24 MHz)
+          - description: GMAC0 RMII reference
+          - description: GMAC0 RGMII RX
+          - description: STG AXI/AHB
+          - description: APB Bus
+          - description: GMAC0 GTX
+          - description: RTC Oscillator (32.768 kHz)
+
+  clock-names:
+    oneOf:
+      - minItems: 5
+        items:
+          - const: osc
+          - enum:
+              - gmac0_rmii_refin
+              - gmac0_rgmii_rxin
+          - const: stg_axiahb
+          - const: apb_bus
+          - const: gmac0_gtxclk
+          - const: rtc_osc
+
+      - minItems: 6
+        items:
+          - const: osc
+          - const: gmac0_rmii_refin
+          - const: gmac0_rgmii_rxin
+          - const: stg_axiahb
+          - const: apb_bus
+          - const: gmac0_gtxclk
+          - const: rtc_osc
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/starfive,jh7110-crg.h> for valid indices.
+
+  '#reset-cells':
+    const: 1
+    description:
+      See <dt-bindings/reset/starfive,jh7110-crg.h> for valid indices.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+  - '#reset-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/starfive,jh7110-crg.h>
+
+    clock-controller@17000000 {
+        compatible = "starfive,jh7110-aoncrg";
+        reg = <0x17000000 0x10000>;
+        clocks = <&osc>, <&gmac0_rmii_refin>,
+                 <&gmac0_rgmii_rxin>,
+                 <&syscrg JH7110_SYSCLK_STG_AXIAHB>,
+                 <&syscrg JH7110_SYSCLK_APB_BUS>,
+                 <&syscrg JH7110_SYSCLK_GMAC0_GTXCLK>,
+                 <&rtc_osc>;
+        clock-names = "osc", "gmac0_rmii_refin",
+                      "gmac0_rgmii_rxin", "stg_axiahb",
+                      "apb_bus", "gmac0_gtxclk",
+                      "rtc_osc";
+        #clock-cells = <1>;
+        #reset-cells = <1>;
+    };

Documentation/devicetree/bindings/clock/starfive,jh7110-ispcrg.yaml

@@ -0,0 +1,87 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/starfive,jh7110-ispcrg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 Image-Signal-Process Clock and Reset Generator
+
+maintainers:
+  - Xingyu Wu <xingyu.wu@starfivetech.com>
+
+properties:
+  compatible:
+    const: starfive,jh7110-ispcrg
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: ISP Top core
+      - description: ISP Top Axi
+      - description: NOC ISP Bus
+      - description: external DVP
+
+  clock-names:
+    items:
+      - const: isp_top_core
+      - const: isp_top_axi
+      - const: noc_bus_isp_axi
+      - const: dvp_clk
+
+  resets:
+    items:
+      - description: ISP Top core
+      - description: ISP Top Axi
+      - description: NOC ISP Bus
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/starfive,jh7110-crg.h> for valid indices.
+
+  '#reset-cells':
+    const: 1
+    description:
+      See <dt-bindings/reset/starfive,jh7110-crg.h> for valid indices.
+
+  power-domains:
+    maxItems: 1
+    description:
+      ISP domain power
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - resets
+  - '#clock-cells'
+  - '#reset-cells'
+  - power-domains
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/starfive,jh7110-crg.h>
+    #include <dt-bindings/power/starfive,jh7110-pmu.h>
+    #include <dt-bindings/reset/starfive,jh7110-crg.h>
+
+    ispcrg: clock-controller@19810000 {
+        compatible = "starfive,jh7110-ispcrg";
+        reg = <0x19810000 0x10000>;
+        clocks = <&syscrg JH7110_SYSCLK_ISP_TOP_CORE>,
+                 <&syscrg JH7110_SYSCLK_ISP_TOP_AXI>,
+                 <&syscrg JH7110_SYSCLK_NOC_BUS_ISP_AXI>,
+                 <&dvp_clk>;
+        clock-names = "isp_top_core", "isp_top_axi",
+                      "noc_bus_isp_axi", "dvp_clk";
+        resets = <&syscrg JH7110_SYSRST_ISP_TOP>,
+                 <&syscrg JH7110_SYSRST_ISP_TOP_AXI>,
+                 <&syscrg JH7110_SYSRST_NOC_BUS_ISP_AXI>;
+        #clock-cells = <1>;
+        #reset-cells = <1>;
+        power-domains = <&pwrc JH7110_PD_ISP>;
+    };

Documentation/devicetree/bindings/clock/starfive,jh7110-pll.yaml

@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/starfive,jh7110-pll.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 PLL Clock Generator
+
+description:
+  This PLL are high speed, low jitter frequency synthesizers in JH7110.
+  Each PLL clocks work in integer mode or fraction mode by some dividers,
+  and the configuration registers and dividers are set in several syscon
+  registers. So pll node should be a child of SYS-SYSCON node.
+  The formula for calculating frequency is that,
+  Fvco = Fref * (NI + NF) / M / Q1
+
+maintainers:
+  - Xingyu Wu <xingyu.wu@starfivetech.com>
+
+properties:
+  compatible:
+    const: starfive,jh7110-pll
+
+  clocks:
+    maxItems: 1
+    description: Main Oscillator (24 MHz)
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/starfive,jh7110-crg.h> for valid indices.
+
+required:
+  - compatible
+  - clocks
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    pllclk: pll-clock-controller {
+      compatible = "starfive,jh7110-pll";
+      clocks = <&osc>;
+      #clock-cells = <1>;
+    };