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authorLinus Torvalds <torvalds@linux-foundation.org>2021-11-08 22:46:10 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-08 22:46:10 +0300
commitdab334c98bf3563f57dc694242192f9e1cc95f96 (patch)
tree6fa3ca1961d790c226e7054408317b0c84ccaebb /Documentation
parent206825f50f908771934e1fba2bfc2e1f1138b36a (diff)
parentc6f49acb52c79f8e84af2eda4fc002a2068a6c9e (diff)
downloadlinux-dab334c98bf3563f57dc694242192f9e1cc95f96.tar.xz
Merge branch 'i2c/for-mergewindow' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang: - big refactoring of the PASEMI driver to support the Apple M1 - huge improvements to the XIIC in terms of locking and SMP safety - refactoring and clean ups for the i801 driver ... and the usual bunch of small driver updates * 'i2c/for-mergewindow' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (43 commits) i2c: amd-mp2-plat: ACPI: Use ACPI_COMPANION() directly i2c: i801: Add support for Intel Ice Lake PCH-N i2c: virtio: update the maintainer to Conghui i2c: xlr: Fix a resource leak in the error handling path of 'xlr_i2c_probe()' i2c: qup: move to use request_irq by IRQF_NO_AUTOEN flag i2c: qup: fix a trivial typo i2c: tegra: Ensure that device is suspended before driver is removed i2c: i801: Fix incorrect and needless software PEC disabling i2c: mediatek: Dump i2c/dma register when a timeout occurs i2c: mediatek: Reset the handshake signal between i2c and dma i2c: mlxcpld: Allow flexible polling time setting for I2C transactions i2c: pasemi: Set enable bit for Apple variant i2c: pasemi: Add Apple platform driver i2c: pasemi: Refactor _probe to use devm_* i2c: pasemi: Allow to configure bus frequency i2c: pasemi: Move common reset code to own function i2c: pasemi: Split pci driver to its own file i2c: pasemi: Split off common probing code i2c: pasemi: Remove usage of pci_dev i2c: pasemi: Use dev_name instead of port number ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/eeprom/at24.yaml6
-rw-r--r--Documentation/devicetree/bindings/i2c/apple,i2c.yaml61
2 files changed, 67 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/eeprom/at24.yaml b/Documentation/devicetree/bindings/eeprom/at24.yaml
index 914a423ec449..4c5396a9744f 100644
--- a/Documentation/devicetree/bindings/eeprom/at24.yaml
+++ b/Documentation/devicetree/bindings/eeprom/at24.yaml
@@ -98,6 +98,12 @@ properties:
- const: nxp,se97b
- const: atmel,24c02
- items:
+ - const: onnn,cat24c04
+ - const: atmel,24c04
+ - items:
+ - const: onnn,cat24c05
+ - const: atmel,24c04
+ - items:
- const: renesas,r1ex24002
- const: atmel,24c02
- items:
diff --git a/Documentation/devicetree/bindings/i2c/apple,i2c.yaml b/Documentation/devicetree/bindings/i2c/apple,i2c.yaml
new file mode 100644
index 000000000000..22fc8483256f
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/apple,i2c.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/i2c/apple,i2c.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Apple/PASemi I2C controller
+
+maintainers:
+ - Sven Peter <sven@svenpeter.dev>
+
+description: |
+ Apple SoCs such as the M1 come with a I2C controller based on the one found
+ in machines with P. A. Semi's PWRficient processors.
+ The bus is used to communicate with e.g. USB PD chips or the speaker
+ amp.
+
+allOf:
+ - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+ compatible:
+ enum:
+ - apple,t8103-i2c
+ - apple,i2c
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: I2C bus reference clock
+
+ interrupts:
+ maxItems: 1
+
+ clock-frequency:
+ description: |
+ Desired I2C bus clock frequency in Hz. If not specified, 100 kHz will be
+ used. This frequency is generated by dividing the reference clock.
+ Allowed values are between ref_clk/(16*4) and ref_clk/(16*255).
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - interrupts
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ i2c@35010000 {
+ compatible = "apple,t8103-i2c";
+ reg = <0x35010000 0x4000>;
+ interrupt-parent = <&aic>;
+ interrupts = <0 627 4>;
+ clocks = <&ref_clk>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };