From: Rob Herring <robh@kernel.org>
To: Ikjoon Jang <ikjn@chromium.org>
Cc: devicetree@vger.kernel.org,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Gwendal Grignou <gwendal@chromium.org>,
Lee Jones <lee.jones@linaro.org>,
Mark Rutland <mark.rutland@arm.com>,
Benson Leung <bleung@chromium.org>,
Enric Balletbo i Serra <enric.balletbo@collabora.com>,
Guenter Roeck <groeck@chromium.org>,
Jiri Kosina <jikos@kernel.org>,
Benjamin Tissoires <benjamin.tissoires@redhat.com>,
Nicolas Boitchat <drinkcat@chromium.org>,
linux-input@vger.kernel.org
Subject: Re: [PATCH v3] dt-bindings: mfd: Convert ChromeOS EC bindings to json-schema
Date: Mon, 27 Jan 2020 10:05:29 -0600 [thread overview]
Message-ID: <20200127160529.GA30843@bogus> (raw)
In-Reply-To: <20200121074727.35893-1-ikjn@chromium.org>
On Tue, Jan 21, 2020 at 03:47:27PM +0800, Ikjoon Jang wrote:
> Convert the ChromeOS EC bindings to json-schema.
>
> Signed-off-by: Ikjoon Jang <ikjn@chromium.org>
> ---
> v3: node name changed in rpmsg example
> v2: cleanup description, fix typos, remove LPC, add add RPMSG example
> ---
> .../devicetree/bindings/mfd/cros-ec.txt | 76 ------------
> .../devicetree/bindings/mfd/cros-ec.yaml | 111 ++++++++++++++++++
> 2 files changed, 111 insertions(+), 76 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/mfd/cros-ec.txt
> create mode 100644 Documentation/devicetree/bindings/mfd/cros-ec.yaml
> -Required properties (LPC):
> -- compatible: "google,cros-ec-lpc"
> -- reg: List of (IO address, size) pairs defining the interface uses
Where did this go?
> diff --git a/Documentation/devicetree/bindings/mfd/cros-ec.yaml b/Documentation/devicetree/bindings/mfd/cros-ec.yaml
> new file mode 100644
> index 000000000000..6a5b87cebcfa
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/cros-ec.yaml
> @@ -0,0 +1,111 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/cros-ec.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ChromeOS Embedded Controller
> +
> +maintainers:
> + - Benson Leung <bleung@chromium.org>
> + - Enric Balletbo i Serra <enric.balletbo@collabora.com>
> + - Guenter Roeck <groeck@chromium.org>
> +
> +description: |
> + Google's ChromeOS EC is a microcontroller which talks to the AP and
> + implements various functions such as keyboard and battery charging.
> + The EC can be connected through various interfaces (I2C, SPI, and others)
> + and the compatible string specifies which interface is being used.
> +
> +properties:
> + compatible:
> + oneOf:
> + - description:
> + For implementations of the EC is connected through I2C.
> + const: google,cros-ec-i2c
> + - description:
> + For implementations of the EC is connected through SPI.
> + const: google,cros-ec-spi
> + - description:
> + For implementations of the EC is connected through RPMSG.
> + const: google,cros-ec-rpmsg
> +
> + google,has-vbc-nvram:
> + description: |
You can drop '|' if there's no formatting to maintain. And you should
reflow this.
> + Some implementations of the EC include a small
> + nvram space used to store verified boot context data.
> + This boolean flag is used to specify whether this nvram is
> + present or not.
> + type: boolean
> +
> +required:
> + - compatible
> +
> +allOf:
> + - if:
> + properties:
> + compatible:
> + const: google,cros-ec-i2c
> + then:
> + properties:
> + reg:
> + description: I2C slave address
> + maxItems: 1
> + required:
> + - reg
> + - if:
> + properties:
> + compatible:
> + const: google,cros-ec-spi
> + then:
> + properties:
> + reg:
> + description: SPI chip select
> + maxItems: 1
> + google,cros-ec-spi-pre-delay:
> + description: |
> + This property specifies the delay in usecs between the
> + assertion of the CS and the first clock pulse.
Needs a type reference at a minumum and ideally some constraints.
> + google,cros-ec-spi-msg-delay:
> + description: |
> + This property specifies the delay in usecs between messages.
Same here.
> + required:
> + - reg
> +
Add:
additionalProperties: false
> +examples:
> + # Example for I2C
> + - |
> + i2c0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cros-ec@1e {
> + compatible = "google,cros-ec-i2c";
> + reg = <0x1e>;
> + interrupts = <6 0>;
Not documented.
> + interrupt-parent = <&gpx1>;
> + };
> + };
> + # Example for SPI
> + - |
> + spi0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cros-ec@0 {
> + compatible = "google,cros-ec-spi";
> + reg = <0x0>;
> + google,cros-ec-spi-msg-delay = <30>;
> + interrupts = <99 0>;
> + interrupt-parent = <&gpio7>;
> + spi-max-frequency = <5000000>;
> + };
> + };
> + # Example for RPMSG
> + - |
> + scp0 {
> + cros-ec@0 {
> + compatible = "google,cros-ec-rpmsg";
> + };
> + };
> +...
> --
> 2.25.0.341.g760bfbb309-goog
>
next prev parent reply other threads:[~2020-01-27 16:05 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-14 2:19 [PATCH] dt-bindings: mfd: Convert ChromeOS EC bindings to json-schema Ikjoon Jang
2020-01-14 12:58 ` Enric Balletbo i Serra
2020-01-15 9:56 ` Ikjoon Jang
2020-01-16 10:13 ` Ikjoon Jang
2020-01-16 12:29 ` Enric Balletbo i Serra
2020-01-21 7:47 ` [PATCH v3] " Ikjoon Jang
2020-01-27 15:57 ` Enric Balletbo i Serra
2020-01-27 16:12 ` Rob Herring
2020-01-27 16:25 ` Enric Balletbo i Serra
2020-02-04 7:44 ` Ikjoon Jang
2020-01-27 16:05 ` Rob Herring [this message]
2020-02-04 8:39 ` Ikjoon Jang
2020-02-14 6:26 ` [PATCH v4] " Ikjoon Jang
2020-02-14 15:39 ` Enric Balletbo i Serra
2020-02-18 20:20 ` Rob Herring
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