On 10/29/2024 7:28 PM, Krzysztof Kozlowski wrote:
On 29/10/2024 18:23, Michael Nemanov wrote:
Add device-tree bindings for the CC33xx family.
Signed-off-by: Michael Nemanov <michael.nemanov@xxxxxx>
---
.../bindings/net/wireless/ti,cc33xx.yaml | 59 +++++++++++++++++++
1 file changed, 59 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/wireless/ti,cc33xx.yaml
diff --git a/Documentation/devicetree/bindings/net/wireless/ti,cc33xx.yaml b/Documentation/devicetree/bindings/net/wireless/ti,cc33xx.yaml
new file mode 100644
index 000000000000..12a0a2f52f44
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/wireless/ti,cc33xx.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/wireless/ti,cc33xx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments CC33xx Wireless LAN Controller
+
+maintainers:
+ - Michael Nemanov <michael.nemanov@xxxxxx>
+
+description:
+ The CC33xx is a family of IEEE 802.11ax chips from Texas Instruments.
+ These chips must be connected via SDIO and support in-band / out-of-band IRQ.
+
+properties:
+ $nodename:
+ pattern: "^wifi@2"
This wasn't here, please drop.
>
In the previous patch you noted there was a mismatch between the reg
address in the schema (const: 2) and the used in the example (wifi@1).
The dt_binding_check did not flag this because SDIO is not a simple bus.
Using this regex seemed like a good alternative. Still drop it?
+
+ compatible:
+ oneOf:
Why oneOf appeared? Do you plan to grow it? >
+ - items:
+ - enum:
+ - ti,cc3300
+ - ti,cc3301
+ - ti,cc3350
+ - ti,cc3351
+ - const: ti,cc33xx
And how cc33xx could appear? That's a no. Generic compatibles are not
allowed. Please do not introduce some completely different changes than
asked for.
Your changelog does not explain these three. "Fixed compatibility" is
way too vague, especially that you do not fix anything here.
I was trying to address the feedback from previous patch. You said:
+static const struct of_device_id cc33xx_sdio_of_match_table[] = {
+ { .compatible = "ti,cc3300", .data = &cc33xx_data },
+ { .compatible = "ti,cc3301", .data = &cc33xx_data },
+ { .compatible = "ti,cc3350", .data = &cc33xx_data },
+ { .compatible = "ti,cc3351", .data = &cc33xx_data },
+ { }
+};
Eh? What happened here? So devices are compatibles thus make them
compatible in the bindings.
I thought this is the right way to do it (originally taken from [1]).
How can I solve it via DT bindings?
It's all over the bindings (also example-schema). Use fallback and oneOf.
Looking at [2] and [3] as an example I tried to do the same (make cc33xx
driver compatible with all chip variants).
How should have I done it?
Regards,
Michael.
[1]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/net/wireless/ti/wlcore/sdio.c#n204
[2]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml
[3]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/watchdog/qcom-wdt.c
