From: "Andrew Jeffery" <andrew@aj.id.au>
To: "Jamin Lin" <jamin_lin@aspeedtech.com>,
"Rob Herring" <robh+dt@kernel.org>,
"Joel Stanley" <joel@jms.id.au>,
"Brendan Higgins" <brendanhiggins@google.com>,
"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
"Rayn Chen" <rayn_chen@aspeedtech.com>,
"open list:I2C SUBSYSTEM HOST DRIVERS"
<linux-i2c@vger.kernel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
"moderated list:ARM/ASPEED MACHINE SUPPORT"
<linux-arm-kernel@lists.infradead.org>,
"moderated list:ARM/ASPEED MACHINE SUPPORT"
<linux-aspeed@lists.ozlabs.org>,
"open list" <linux-kernel@vger.kernel.org>,
"moderated list:ARM/ASPEED I2C DRIVER" <openbmc@lists.ozlabs.org>
Cc: "Ryan Chen" <ryan_chen@aspeedtech.com>,
"Chin-Ting Kuo" <chin-ting_kuo@aspeedtech.com>,
"Troy Lee" <troy_lee@aspeedtech.com>,
"Steven Lee" <steven_lee@aspeedtech.com>
Subject: Re: [PATCH v2 1/1] dt-bindings: aspeed-i2c: Convert txt to yaml format
Date: Fri, 28 May 2021 08:50:43 +0930 [thread overview]
Message-ID: <f7df6bb6-762d-4250-a4bc-076cbfc441eb@www.fastmail.com> (raw)
In-Reply-To: <20210527102512.20684-2-jamin_lin@aspeedtech.com>
On Thu, 27 May 2021, at 19:55, Jamin Lin wrote:
> Convert aspeed i2c to yaml.
>
> Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
> ---
> .../devicetree/bindings/i2c/aspeed,i2c.yaml | 86 +++++++++++++++++++
> .../devicetree/bindings/i2c/i2c-aspeed.txt | 49 -----------
> 2 files changed, 86 insertions(+), 49 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml
> delete mode 100644 Documentation/devicetree/bindings/i2c/i2c-aspeed.txt
>
> diff --git a/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml
> b/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml
> new file mode 100644
> index 000000000000..1f7064d77708
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml
> @@ -0,0 +1,86 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/i2c/aspeed,i2c.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ASPEED I2C on the AST24XX, AST25XX, and AST26XX SoCs Device
> Tree Bindings
> +
> +maintainers:
> + - Rayn Chen <rayn_chen@aspeedtech.com>
> +
> +allOf:
> + - $ref: /schemas/i2c/i2c-controller.yaml#
> +
> +properties:
> + compatible:
> + enum:
> + - aspeed,ast2400-i2c-bus
> + - aspeed,ast2500-i2c-bus
> + - aspeed,ast2600-i2c-bus
> +
> + "#size-cells":
> + const: 0
> +
> + "#address-cells":
> + const: 1
> +
> + reg:
> + minItems: 1
> + maxItems: 2
> + items:
> + - description: address offset and range of bus
> + - description: address offset and range of bus buffer
> +
> + interrupts:
> + maxItems: 1
> + description: interrupt number
> +
> + clocks:
> + maxItems: 1
> + description:
> + root clock of bus, should reference the APB
> + clock in the second cell
> +
> + reset:
> + maxItems: 1
> + description: phandle to reset controller with the reset number in
> + the second cell
> +
> + bus-frequency:
> + minimum: 500
> + maximum: 4000000
> + default: 100000
> + description: frequency of the bus clock in Hz defaults to 100 kHz
> when not
> + specified
> +
> + multi-master:
> + type: boolean
> + description:
> + states that there is another master active on this bus
> +
> +required:
> + - reg
> + - compatible
> + - clocks
> + - resets
> +
> +unevaluatedProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/aspeed-clock.h>
> + i2c0: i2c-bus@40 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + #interrupt-cells = <1>;
> + reg = <0x40 0x40>;
> + compatible = "aspeed,ast2500-i2c-bus";
> + clocks = <&syscon ASPEED_CLK_APB>;
> + resets = <&syscon ASPEED_RESET_I2C>;
> + bus-frequency = <100000>;
> + interrupts = <0>;
> + interrupt-parent = <&i2c_ic>;
> + status = "disabled";
> + /* Does not need pinctrl properties */
Note this actually isn't right and someone (me?) needs to send a patch
to fix the devicetree(s) - the I2C mux properties for bus 0 and 1 just
don't have a group, and so SCL and SDA need to be muxed individually.
I expect we wound up with this comment by a lack of a match for an
erroneous grep.
Andrew
next prev parent reply other threads:[~2021-05-27 23:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-27 10:25 [PATCH v2 0/1] dt-bindings-aspeed-i2 Convert to yaml format Jamin Lin
2021-05-27 10:25 ` [PATCH v2 1/1] dt-bindings: aspeed-i2c: Convert txt " Jamin Lin
2021-05-27 23:20 ` Andrew Jeffery [this message]
2021-05-28 1:44 ` Jamin Lin
2021-06-02 20:17 ` Rob Herring
2021-06-03 1:46 ` Jamin Lin
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