From: Rob Herring <robh@kernel.org>
To: Iwona Winiarska <iwona.winiarska@intel.com>
Cc: linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org,
x86@kernel.org, devicetree@vger.kernel.org,
linux-aspeed@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org,
linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Joel Stanley <joel@jms.id.au>, Andrew Jeffery <andrew@aj.id.au>,
Jean Delvare <jdelvare@suse.com>,
Guenter Roeck <linux@roeck-us.net>,
Jonathan Corbet <corbet@lwn.net>,
Thomas Gleixner <tglx@linutronix.de>,
Andy Lutomirski <luto@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
Yazen Ghannam <yazen.ghannam@amd.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
Tony Luck <tony.luck@intel.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
Subject: Re: [PATCH 04/14] dt-bindings: Add bindings for peci-aspeed
Date: Thu, 15 Jul 2021 10:28:40 -0600 [thread overview]
Message-ID: <20210715162840.GA1187226@robh.at.kernel.org> (raw)
In-Reply-To: <20210712220447.957418-5-iwona.winiarska@intel.com>
On Tue, Jul 13, 2021 at 12:04:37AM +0200, Iwona Winiarska wrote:
> Add device tree bindings for the peci-aspeed controller driver.
>
> Co-developed-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
> Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
> Signed-off-by: Iwona Winiarska <iwona.winiarska@intel.com>
> ---
> .../devicetree/bindings/peci/peci-aspeed.yaml | 111 ++++++++++++++++++
> 1 file changed, 111 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/peci/peci-aspeed.yaml
>
> diff --git a/Documentation/devicetree/bindings/peci/peci-aspeed.yaml b/Documentation/devicetree/bindings/peci/peci-aspeed.yaml
> new file mode 100644
> index 000000000000..6061e06009fb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/peci/peci-aspeed.yaml
> @@ -0,0 +1,111 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/peci/peci-aspeed.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Aspeed PECI Bus Device Tree Bindings
> +
> +maintainers:
> + - Iwona Winiarska <iwona.winiarska@intel.com>
> + - Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
> +
> +allOf:
> + - $ref: peci-controller.yaml#
> +
> +properties:
> + compatible:
> + enum:
> + - aspeed,ast2400-peci
> + - aspeed,ast2500-peci
> + - aspeed,ast2600-peci
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + description: |
> + Clock source for PECI controller. Should reference the external
> + oscillator clock.
> + maxItems: 1
> +
> + resets:
> + maxItems: 1
> +
> + clock-divider:
> + description: This value determines PECI controller internal clock
> + dividing rate. The divider will be calculated as 2 raised to the
> + power of the given value.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + minimum: 0
> + maximum: 7
> + default: 0
> +
> + msg-timing:
> + description: |
> + Message timing negotiation period. This value will determine the period
> + of message timing negotiation to be issued by PECI controller. The unit
> + of the programmed value is four times of PECI clock period.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + minimum: 0
> + maximum: 255
> + default: 1
> +
> + addr-timing:
> + description: |
> + Address timing negotiation period. This value will determine the period
> + of address timing negotiation to be issued by PECI controller. The unit
> + of the programmed value is four times of PECI clock period.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + minimum: 0
> + maximum: 255
> + default: 1
> +
> + rd-sampling-point:
> + description: |
> + Read sampling point selection. The whole period of a bit time will be
> + divided into 16 time frames. This value will determine the time frame
> + in which the controller will sample PECI signal for data read back.
> + Usually in the middle of a bit time is the best.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + minimum: 0
> + maximum: 15
> + default: 8
> +
> + cmd-timeout-ms:
> + description: |
> + Command timeout in units of ms.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + minimum: 1
> + maximum: 1000
> + default: 1000
Are all of these properties common for PECI or specific to this
controller? The former needs to go into the common schema. The latter
need vendor prefixes.
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - resets
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/clock/ast2600-clock.h>
> + peci-controller@1e78b000 {
> + compatible = "aspeed,ast2600-peci";
> + reg = <0x1e78b000 0x100>;
> + interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&syscon ASPEED_CLK_GATE_REF0CLK>;
> + resets = <&syscon ASPEED_RESET_PECI>;
> + clock-divider = <0>;
> + msg-timing = <1>;
> + addr-timing = <1>;
> + rd-sampling-point = <8>;
> + cmd-timeout-ms = <1000>;
> + };
> +...
> --
> 2.31.1
>
>
next prev parent reply other threads:[~2021-07-15 16:28 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-12 22:04 [PATCH 00/14] Introduce PECI subsystem Iwona Winiarska
2021-07-12 22:04 ` [PATCH 01/14] x86/cpu: Move intel-family to arch-independent headers Iwona Winiarska
2021-07-14 16:54 ` Williams, Dan J
2021-07-15 16:47 ` Winiarska, Iwona
2021-07-15 18:13 ` Dan Williams
2021-07-15 18:29 ` Luck, Tony
2021-07-12 22:04 ` [PATCH 02/14] x86/cpu: Extract cpuid helpers to arch-independent Iwona Winiarska
2021-07-14 16:58 ` Williams, Dan J
2021-07-15 16:51 ` Winiarska, Iwona
2021-07-15 16:58 ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 03/14] dt-bindings: Add generic bindings for PECI Iwona Winiarska
2021-07-12 22:04 ` [PATCH 04/14] dt-bindings: Add bindings for peci-aspeed Iwona Winiarska
2021-07-15 16:28 ` Rob Herring [this message]
2021-07-16 21:22 ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 05/14] ARM: dts: aspeed: Add PECI controller nodes Iwona Winiarska
2021-07-12 22:04 ` [PATCH 06/14] peci: Add core infrastructure Iwona Winiarska
2021-07-14 17:19 ` Williams, Dan J
2021-07-16 21:08 ` Winiarska, Iwona
2021-07-16 21:50 ` Dan Williams
2021-07-17 6:12 ` gregkh
2021-07-17 20:54 ` Dan Williams
2021-07-12 22:04 ` [PATCH 07/14] peci: Add peci-aspeed controller driver Iwona Winiarska
2021-07-13 5:02 ` Randy Dunlap
2021-07-15 16:42 ` Winiarska, Iwona
2021-07-14 17:39 ` Williams, Dan J
2021-07-16 21:17 ` Winiarska, Iwona
2021-07-27 8:49 ` Zev Weiss
2021-07-29 14:03 ` Winiarska, Iwona
2021-07-29 18:15 ` Zev Weiss
2021-07-12 22:04 ` [PATCH 08/14] peci: Add device detection Iwona Winiarska
2021-07-14 21:05 ` Williams, Dan J
2021-07-16 21:20 ` Winiarska, Iwona
2021-07-27 17:49 ` Zev Weiss
2021-07-29 18:55 ` Winiarska, Iwona
2021-07-29 20:50 ` Zev Weiss
2021-07-30 20:10 ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 09/14] peci: Add support for PECI device drivers Iwona Winiarska
2021-07-27 20:10 ` Zev Weiss
2021-07-27 21:23 ` Guenter Roeck
2021-07-29 21:17 ` Winiarska, Iwona
2021-07-29 23:22 ` Zev Weiss
2021-07-30 20:13 ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 10/14] peci: Add peci-cpu driver Iwona Winiarska
2021-07-27 11:16 ` David Müller (ELSOFT AG)
2021-07-30 20:14 ` Winiarska, Iwona
2021-07-27 21:33 ` Zev Weiss
2021-07-30 21:21 ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 11/14] hwmon: peci: Add cputemp driver Iwona Winiarska
2021-07-15 17:45 ` Guenter Roeck
2021-07-19 20:12 ` Winiarska, Iwona
2021-07-19 20:35 ` Guenter Roeck
2021-07-27 7:06 ` Zev Weiss
2021-07-30 21:51 ` Winiarska, Iwona
2021-07-30 22:04 ` Guenter Roeck
2021-07-12 22:04 ` [PATCH 12/14] hwmon: peci: Add dimmtemp driver Iwona Winiarska
2021-07-15 17:56 ` Guenter Roeck
2021-07-19 20:31 ` Winiarska, Iwona
2021-07-19 20:36 ` Guenter Roeck
2021-07-26 22:08 ` Zev Weiss
2021-07-30 22:48 ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 13/14] docs: hwmon: Document PECI drivers Iwona Winiarska
2021-07-27 22:58 ` Zev Weiss
2021-07-28 0:49 ` Guenter Roeck
2021-08-02 11:39 ` Winiarska, Iwona
2021-08-02 11:37 ` Winiarska, Iwona
2021-08-04 17:52 ` Zev Weiss
2021-08-04 18:05 ` Guenter Roeck
2021-08-05 21:42 ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 14/14] docs: Add PECI documentation Iwona Winiarska
2021-07-14 16:51 ` [PATCH 00/14] Introduce PECI subsystem Williams, Dan J
2021-07-15 17:33 ` Winiarska, Iwona
2021-07-15 19:34 ` Dan Williams
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