[PATCH v3 3/7] media: dt-bindings: samsung,exynos4210-csis: convert to dtschema

From: Krzysztof Kozlowski
Date: Thu Feb 16 2023 - 09:22:37 EST

Convert the Samsung S5P/Exynos SoC series MIPI CSI-2 receiver (MIPI
CSIS) bindings to DT schema. Changes during conversion - adjust to
existing DTS and Linux driver:
1. Add phys and power-domains.
2. Move samsung,csis-wclk property to the endpoint node.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>

---

Changes since v2:
1. Add Rb tag.
2. Move size-cells next to address-cells.
---
.../media/samsung,exynos4210-csis.yaml | 170 ++++++++++++++++++
.../bindings/media/samsung-mipi-csis.txt | 81 ---------
MAINTAINERS | 1 +
3 files changed, 171 insertions(+), 81 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/samsung,exynos4210-csis.yaml
delete mode 100644 Documentation/devicetree/bindings/media/samsung-mipi-csis.txt

diff --git a/Documentation/devicetree/bindings/media/samsung,exynos4210-csis.yaml b/Documentation/devicetree/bindings/media/samsung,exynos4210-csis.yaml
new file mode 100644
index 000000000000..dd6cc7ac1f7c
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/samsung,exynos4210-csis.yaml
@@ -0,0 +1,170 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/samsung,exynos4210-csis.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung S5P/Exynos SoC series MIPI CSI-2 receiver (MIPI CSIS)
+
+maintainers:
+ - Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
+ - Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
+
+properties:
+ compatible:
+ enum:
+ - samsung,s5pv210-csis
+ - samsung,exynos4210-csis
+ - samsung,exynos4212-csis
+ - samsung,exynos5250-csis
+
+ reg:
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ bus-width:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [2, 4]
+ description:
+ Number of data lines supported.
+
+ clocks:
+ maxItems: 2
+
+ clock-names:
+ items:
+ - const: csis
+ - const: sclk_csis
+
+ clock-frequency:
+ default: 166000000
+ description:
+ The IP's main (system bus) clock frequency in Hz.
+
+ interrupts:
+ maxItems: 1
+
+ phys:
+ maxItems: 1
+
+ phy-names:
+ items:
+ - const: csis
+
+ power-domains:
+ maxItems: 1
+
+ vddio-supply:
+ description: MIPI CSIS I/O and PLL voltage supply (e.g. 1.8V).
+
+ vddcore-supply:
+ description: MIPI CSIS Core voltage supply (e.g. 1.1V).
+
+patternProperties:
+ "^port@[34]$":
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ additionalProperties: false
+ description:
+ Camera input port.
+
+ properties:
+ reg:
+ enum: [3, 4]
+
+ endpoint:
+ $ref: video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ data-lanes:
+ minItems: 1
+ maxItems: 4
+
+ samsung,csis-hs-settle:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Differential receiver (HS-RX) settle time.
+
+ samsung,csis-wclk:
+ type: boolean
+ description:
+ CSI-2 wrapper clock selection. If this property is present external clock
+ from CMU will be used, or the bus clock if it's not specified.
+
+ required:
+ - data-lanes
+
+ required:
+ - reg
+
+required:
+ - compatible
+ - reg
+ - bus-width
+ - clocks
+ - clock-names
+ - interrupts
+ - vddio-supply
+ - vddcore-supply
+
+anyOf:
+ - required:
+ - port@3
+ - required:
+ - port@4
+
+allOf:
+ - if:
+ required:
+ - samsung,isp-wb
+ then:
+ required:
+ - samsung,sysreg
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/exynos4.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ csis@11890000 {
+ compatible = "samsung,exynos4210-csis";
+ reg = <0x11890000 0x4000>;
+ clocks = <&clock CLK_CSIS1>,
+ <&clock CLK_SCLK_CSIS1>;
+ clock-names = "csis", "sclk_csis";
+ assigned-clocks = <&clock CLK_MOUT_CSIS1>,
+ <&clock CLK_SCLK_CSIS1>;
+ assigned-clock-parents = <&clock CLK_MOUT_MPLL_USER_T>;
+ assigned-clock-rates = <0>, <176000000>;
+
+ interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
+
+ bus-width = <2>;
+ power-domains = <&pd_cam>;
+ phys = <&mipi_phy 2>;
+ phy-names = "csis";
+
+ vddcore-supply = <&ldo8_reg>;
+ vddio-supply = <&ldo10_reg>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* Camera D (4) MIPI CSI-2 (CSIS1) */
+ port@4 {
+ reg = <4>;
+
+ endpoint {
+ remote-endpoint = <&is_s5k6a3_ep>;
+ data-lanes = <1>;
+ samsung,csis-hs-settle = <18>;
+ samsung,csis-wclk;
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/media/samsung-mipi-csis.txt b/Documentation/devicetree/bindings/media/samsung-mipi-csis.txt
deleted file mode 100644
index a4149c9434ea..000000000000
--- a/Documentation/devicetree/bindings/media/samsung-mipi-csis.txt
+++ /dev/null
@@ -1,81 +0,0 @@
-Samsung S5P/Exynos SoC series MIPI CSI-2 receiver (MIPI CSIS)
--------------------------------------------------------------
-
-Required properties:
-
-- compatible : "samsung,s5pv210-csis" for S5PV210 (S5PC110),
- "samsung,exynos4210-csis" for Exynos4210 (S5PC210),
- "samsung,exynos4212-csis" for Exynos4212/Exynos4412,
- "samsung,exynos5250-csis" for Exynos5250;
-- reg : offset and length of the register set for the device;
-- interrupts : should contain MIPI CSIS interrupt; the format of the
- interrupt specifier depends on the interrupt controller;
-- bus-width : maximum number of data lanes supported (SoC specific);
-- vddio-supply : MIPI CSIS I/O and PLL voltage supply (e.g. 1.8V);
-- vddcore-supply : MIPI CSIS Core voltage supply (e.g. 1.1V);
-- clocks : list of clock specifiers, corresponding to entries in
- clock-names property;
-- clock-names : must contain "csis", "sclk_csis" entries, matching entries
- in the clocks property.
-
-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;
-- samsung,csis-wclk : CSI-2 wrapper clock selection. If this property is present
- external clock from CMU will be used, or the bus clock if
- if it's not specified.
-
-The device node should contain one 'port' child node 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) must be 3 for camera C input (CSIS0) or 4 for
- camera D input (CSIS1);
-
-endpoint node
--------------
-
-- data-lanes : (required) an array specifying active physical MIPI-CSI2
- data input lanes and their mapping to logical lanes; the
- array's content is unused, only its length is meaningful;
-
-- samsung,csis-hs-settle : (optional) differential receiver (HS-RX) settle time;
-
-
-Example:
-
- reg0: regulator@0 {
- };
-
- reg1: regulator@1 {
- };
-
-/* SoC properties */
-
- csis_0: csis@11880000 {
- compatible = "samsung,exynos4210-csis";
- reg = <0x11880000 0x1000>;
- interrupts = <0 78 0>;
- #address-cells = <1>;
- #size-cells = <0>;
- };
-
-/* Board properties */
-
- csis_0: csis@11880000 {
- clock-frequency = <166000000>;
- vddio-supply = <&reg0>;
- vddcore-supply = <&reg1>;
- port {
- reg = <3>; /* 3 - CSIS0, 4 - CSIS1 */
- csis0_ep: endpoint {
- remote-endpoint = <...>;
- data-lanes = <1>, <2>;
- samsung,csis-hs-settle = <12>;
- };
- };
- };
diff --git a/MAINTAINERS b/MAINTAINERS
index 57d1d6ecb33d..0882e304c8f9 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18465,6 +18465,7 @@ M: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
L: linux-media@xxxxxxxxxxxxxxx
S: Supported
Q: https://patchwork.linuxtv.org/project/linux-media/list/
+F: Documentation/devicetree/bindings/media/samsung,exynos4210-csis.yaml
F: drivers/media/platform/samsung/exynos4-is/

SAMSUNG SOC CLOCK DRIVERS
--
2.34.1