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authorWolfram Sang <wsa+renesas@sang-engineering.com>2024-03-20 11:28:51 +0300
committerWolfram Sang <wsa+renesas@sang-engineering.com>2024-03-20 11:28:51 +0300
commit7e5d4236d5462e2fef75fad6101fccee47051c4a (patch)
tree53ae2fdc99f5ffa2411884d3636ccbe4aceeb87f /Documentation
parenta4145ce1e7bc247fd6f2846e8699473448717b37 (diff)
parentbb271301b80410592cbe0170b9f6d2f677f68171 (diff)
downloadlinux-7e5d4236d5462e2fef75fad6101fccee47051c4a.tar.xz
Merge tag 'i2c-host-6.9-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-mergewindow
Théo adds support for the Mobileye EyeQ5-I2C in the bindings. This patch is followed by eight commits featuring improvements to the Nomadik controller, such as simplification of the IRQ logic, renaming of the private data structure, more efficient use of FIELD_PREP/GET, GENMASK, etc., better time measurement with ktime, and more.
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml49
1 files changed, 43 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml b/Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml
index 16024415a4a7..44c54b162bb1 100644
--- a/Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml
@@ -14,9 +14,6 @@ description: The Nomadik I2C host controller began its life in the ST
maintainers:
- Linus Walleij <linus.walleij@linaro.org>
-allOf:
- - $ref: /schemas/i2c/i2c-controller.yaml#
-
# Need a custom select here or 'arm,primecell' will match on lots of nodes
select:
properties:
@@ -24,21 +21,23 @@ select:
contains:
enum:
- st,nomadik-i2c
+ - mobileye,eyeq5-i2c
required:
- compatible
properties:
compatible:
oneOf:
- # The variant found in STn8815
- items:
- const: st,nomadik-i2c
- const: arm,primecell
- # The variant found in DB8500
- items:
- const: stericsson,db8500-i2c
- const: st,nomadik-i2c
- const: arm,primecell
+ - items:
+ - const: mobileye,eyeq5-i2c
+ - const: arm,primecell
reg:
maxItems: 1
@@ -55,7 +54,7 @@ properties:
- items:
- const: mclk
- const: apb_pclk
- # Clock name in DB8500
+ # Clock name in DB8500 or EyeQ5
- items:
- const: i2cclk
- const: apb_pclk
@@ -70,6 +69,16 @@ properties:
minimum: 1
maximum: 400000
+ mobileye,olb:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ items:
+ - items:
+ - description: Phandle to OLB system controller node.
+ - description: Platform-wide controller ID (integer starting from zero).
+ description:
+ The phandle pointing to OLB system controller node, with the I2C
+ controller index.
+
required:
- compatible
- reg
@@ -79,6 +88,20 @@ required:
unevaluatedProperties: false
+allOf:
+ - $ref: /schemas/i2c/i2c-controller.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: mobileye,eyeq5-i2c
+ then:
+ required:
+ - mobileye,olb
+ else:
+ properties:
+ mobileye,olb: false
+
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
@@ -111,5 +134,19 @@ examples:
clocks = <&i2c0clk>, <&pclki2c0>;
clock-names = "mclk", "apb_pclk";
};
+ - |
+ #include <dt-bindings/interrupt-controller/mips-gic.h>
+ i2c@300000 {
+ compatible = "mobileye,eyeq5-i2c", "arm,primecell";
+ reg = <0x300000 0x1000>;
+ interrupt-parent = <&gic>;
+ interrupts = <GIC_SHARED 1 IRQ_TYPE_LEVEL_HIGH>;
+ clock-frequency = <400000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clocks = <&i2c_ser_clk>, <&i2c_clk>;
+ clock-names = "i2cclk", "apb_pclk";
+ mobileye,olb = <&olb 0>;
+ };
...