summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2022-03-26 11:41:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-26 11:41:53 -0700
commit9bf3fc5007856d5ca76d6e7a4652e3b67b683241 (patch)
treecfd50f910b898ed84adeeaf0dc51a0b81b8d7c17 /Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml
parentbddac7c1e02ba47f0570e494c9289acea3062cc1 (diff)
parent6b49f3409a090c8e9d1f46ff2705c479b45a54d4 (diff)
downloadlwn-9bf3fc5007856d5ca76d6e7a4652e3b67b683241.tar.gz
lwn-9bf3fc5007856d5ca76d6e7a4652e3b67b683241.zip
Merge tag 'devicetree-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring: - Add Krzysztof Kozlowski as co-maintainer for DT bindings providing much needed help. - DT schema validation now takes DTB files as input rather than intermediate YAML files. This decouples the validation from the source level syntax information. There's a bunch of schema fixes as a result of switching to DTB based validation which exposed some errors and incomplete schemas and examples. - Kbuild improvements to explicitly warn users running 'make dt_binding_check' on missing yamllint - Expand DT_SCHEMA_FILES kbuild variable to take just a partial filename or path instead of the full path to 1 file. - Convert various bindings to schema format: mscc,vsc7514-switch, multiple GNSS bindings, ahci-platform, i2c-at91, multiple UFS bindings, cortina,gemini-sata-bridge, cortina,gemini-ethernet, Atmel SHA, Atmel TDES, Atmel AES, armv7m-systick, Samsung Exynos display subsystem, nuvoton,npcm7xx-timer, samsung,s3c2410-i2c, zynqmp_dma, msm/mdp4, rda,8810pl-uart - New schemas for u-boot environment variable partition, TI clksel - New compatible strings for Renesas RZ/V2L SoC - Vendor prefixes for Xen, HPE, deprecated Synopsys, deprecated HiSilicon - Add/fix schemas for QEMU Arm 'virt' machine - Drop unused of_alias_get_alias_list() function - Add a script to check DT unittest EXPECT message output. Pass messages also now print by default at PR_INFO level to help test automation. * tag 'devicetree-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (96 commits) dt-bindings: kbuild: Make DT_SCHEMA_LINT a recursive variable dt-bindings: nvmem: add U-Boot environment variables binding dt-bindings: ufs: qcom: Add SM6350 compatible string dt-bindings: dmaengine: sifive,fu540-c000: include generic schema dt-bindings: gpio: pca95xx: drop useless consumer example Revert "of: base: Introduce of_alias_get_alias_list() to check alias IDs" dt-bindings: virtio,mmio: Allow setting devices 'dma-coherent' dt-bindings: gnss: Add two more chips dt-bindings: gnss: Rewrite sirfstar binding in YAML dt-bindings: gnss: Modify u-blox to use common bindings dt-bindings: gnss: Rewrite common bindings in YAML dt-bindings: ata: ahci-platform: Add rk3568-dwc-ahci compatible dt-bindings: ata: ahci-platform: Add power-domains property dt-bindings: ata: ahci-platform: Convert DT bindings to yaml dt-bindings: kbuild: Use DTB files for validation dt-bindings: kbuild: Pass DT_SCHEMA_FILES to dt-validate dt-bindings: Add QEMU virt machine compatible dt-bindings: arm: Convert QEMU fw-cfg to DT schema dt-bindings: i2c: at91: Add SAMA7G5 compatible strings list dt-bindings: i2c: convert i2c-at91 to json-schema ...
Diffstat (limited to 'Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml')
-rw-r--r--Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml164
1 files changed, 164 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml b/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml
new file mode 100644
index 000000000000..84051b0129c2
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml
@@ -0,0 +1,164 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/samsung,s3c2410-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung S3C/S5P/Exynos SoC I2C Controller
+
+maintainers:
+ - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+
+properties:
+ compatible:
+ enum:
+ - samsung,s3c2410-i2c
+ - samsung,s3c2440-i2c
+ # For s3c2440-like I2C used inside HDMIPHY block found on several SoCs:
+ - samsung,s3c2440-hdmiphy-i2c
+ # For s3c2440-like I2C used as a host to SATA PHY controller on an
+ # internal bus:
+ - samsung,exynos5-sata-phy-i2c
+
+ '#address-cells':
+ const: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ items:
+ - const: i2c
+
+ gpios:
+ description: |
+ The order of the GPIOs should be the following:: <SDA, SCL>. The GPIO
+ specifier depends on the gpio controller. Required in all cases except
+ for "samsung,s3c2440-hdmiphy-i2c" whose input/output lines are
+ permanently wired to the respective client.
+ This property is deprecated. Use "pinctrl-0" and "pinctrl-names" instead.
+ deprecated: yes
+
+ interrupts:
+ maxItems: 1
+
+ reg:
+ maxItems: 1
+
+ samsung,i2c-max-bus-freq:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Desired frequency in Hz of the bus.
+ default: 100000
+
+ samsung,i2c-sda-delay:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Delay (in ns) applied to data line (SDA) edges.
+ default: 0
+
+ samsung,i2c-slave-addr:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Slave address in multi-master environment.
+ default: 0
+
+ samsung,sysreg-phandle:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: Pandle to syscon used to control the system registers.
+
+ '#size-cells':
+ const: 0
+
+required:
+ - compatible
+ - reg
+
+allOf:
+ - $ref: /schemas/i2c/i2c-controller.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - samsung,s3c2440-hdmiphy-i2c
+ - samsung,exynos5-sata-phy-i2c
+ then:
+ properties:
+ gpios: false
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - samsung,s3c2410-i2c
+ - samsung,s3c2440-i2c
+ - samsung,s3c2440-hdmiphy-i2c
+ then:
+ required:
+ - interrupts
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/exynos5250.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ i2c@12c60000 {
+ compatible = "samsung,s3c2440-i2c";
+ reg = <0x12C60000 0x100>;
+ interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clocks = <&clock CLK_I2C0>;
+ clock-names = "i2c";
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_bus>;
+
+ samsung,sysreg-phandle = <&sysreg_system_controller>;
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <20000>;
+ samsung,i2c-slave-addr = <0x66>;
+
+ eeprom@50 {
+ compatible = "samsung,s524ad0xd1";
+ reg = <0x50>;
+ };
+ };
+
+ i2c@12ce0000 {
+ compatible = "samsung,s3c2440-hdmiphy-i2c";
+ reg = <0x12CE0000 0x1000>;
+ interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clocks = <&clock CLK_I2C_HDMI>;
+ clock-names = "i2c";
+
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <66000>;
+
+ phy-i2c@38 {
+ compatible = "samsung,exynos4212-hdmiphy";
+ reg = <0x38>;
+ };
+ };
+
+ i2c@121d0000 {
+ compatible = "samsung,exynos5-sata-phy-i2c";
+ reg = <0x121D0000 0x100>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clocks = <&clock CLK_SATA_PHYI2C>;
+ clock-names = "i2c";
+
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <40000>;
+
+ phy-i2c@38 {
+ compatible = "samsung,exynos-sataphy-i2c";
+ reg = <0x38>;
+ };
+ };