From: Iwona Winiarska <iwona.winiarska@intel.com>
To: linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-aspeed@lists.ozlabs.org, linux-doc@vger.kernel.org,
Dave Hansen <dave.hansen@intel.com>,
Zev Weiss <zweiss@equinix.com>, Rob Herring <robh@kernel.org>,
Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>,
Jonathan Corbet <corbet@lwn.net>,
Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
Guenter Roeck <linux@roeck-us.net>,
devicetree@vger.kernel.org, Jean Delvare <jdelvare@suse.com>,
Arnd Bergmann <arnd@arndb.de>, Rob Herring <robh+dt@kernel.org>,
Borislav Petkov <bp@alien8.de>,
Iwona Winiarska <iwona.winiarska@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-arm-kernel@lists.infradead.org,
linux-hwmon@vger.kernel.org, Tony Luck <tony.luck@intel.com>,
Andrew Jeffery <andrew@aj.id.au>,
Randy Dunlap <rdunlap@infradead.org>,
Olof Johansson <olof@lixom.net>
Subject: [PATCH v4 02/13] dt-bindings: Add bindings for peci-aspeed
Date: Tue, 23 Nov 2021 15:06:55 +0100 [thread overview]
Message-ID: <20211123140706.2945700-3-iwona.winiarska@intel.com> (raw)
In-Reply-To: <20211123140706.2945700-1-iwona.winiarska@intel.com>
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>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../devicetree/bindings/peci/peci-aspeed.yaml | 109 ++++++++++++++++++
1 file changed, 109 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..2929d1e000d8
--- /dev/null
+++ b/Documentation/devicetree/bindings/peci/peci-aspeed.yaml
@@ -0,0 +1,109 @@
+# 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
+
+ cmd-timeout-ms:
+ minimum: 1
+ maximum: 1000
+ default: 1000
+
+ aspeed,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
+
+ aspeed,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
+
+ aspeed,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
+
+ aspeed,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
+
+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>;
+ cmd-timeout-ms = <1000>;
+ aspeed,clock-divider = <0>;
+ aspeed,msg-timing = <1>;
+ aspeed,addr-timing = <1>;
+ aspeed,rd-sampling-point = <8>;
+ };
+...
--
2.31.1
next prev parent reply other threads:[~2021-11-23 14:10 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-23 14:06 [PATCH v4 00/13] Introduce PECI subsystem Iwona Winiarska
2021-11-23 14:06 ` [PATCH v4 01/13] dt-bindings: Add generic bindings for PECI Iwona Winiarska
2021-11-23 14:06 ` Iwona Winiarska [this message]
2021-12-01 10:38 ` [PATCH v4 02/13] dt-bindings: Add bindings for peci-aspeed Billy Tsai
2021-12-02 1:54 ` Zev Weiss
2021-12-02 2:31 ` Billy Tsai
2021-12-07 18:15 ` Winiarska, Iwona
2021-12-08 2:23 ` Billy Tsai
2021-11-23 14:06 ` [PATCH v4 03/13] ARM: dts: aspeed: Add PECI controller nodes Iwona Winiarska
2021-11-23 14:06 ` [PATCH v4 04/13] peci: Add core infrastructure Iwona Winiarska
2021-11-23 14:06 ` [PATCH v4 05/13] peci: Add peci-aspeed controller driver Iwona Winiarska
2021-12-06 5:27 ` Billy Tsai
2021-12-07 18:09 ` Winiarska, Iwona
2021-11-23 14:06 ` [PATCH v4 06/13] peci: Add device detection Iwona Winiarska
2021-11-23 14:07 ` [PATCH v4 07/13] peci: Add sysfs interface for PECI bus Iwona Winiarska
2021-11-23 14:07 ` [PATCH v4 08/13] peci: Add support for PECI device drivers Iwona Winiarska
2021-11-23 14:07 ` [PATCH v4 09/13] peci: Add peci-cpu driver Iwona Winiarska
2021-11-23 14:07 ` [PATCH v4 10/13] hwmon: peci: Add cputemp driver Iwona Winiarska
2021-11-23 15:51 ` Guenter Roeck
2021-11-23 14:07 ` [PATCH v4 11/13] hwmon: peci: Add dimmtemp driver Iwona Winiarska
2021-11-23 14:07 ` [PATCH v4 12/13] docs: hwmon: Document PECI drivers Iwona Winiarska
2021-11-23 15:57 ` Guenter Roeck
2021-11-23 14:07 ` [PATCH v4 13/13] docs: Add PECI documentation Iwona Winiarska
2021-12-14 13:52 ` [PATCH v4 00/13] Introduce PECI subsystem Tomer Maimon
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