From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-path: Received: from mga09.intel.com ([134.134.136.24]:36192 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753793AbeAIWb3 (ORCPT ); Tue, 9 Jan 2018 17:31:29 -0500 From: Jae Hyun Yoo To: joel@jms.id.au, andrew@aj.id.au, arnd@arndb.de, gregkh@linuxfoundation.org, jdelvare@suse.com, linux@roeck-us.net Cc: linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devicetree@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-arm-kernel@lists.infradead.org, openbmc@lists.ozlabs.org, Jae Hyun Yoo Subject: [PATCH linux dev-4.10 1/6] Documentation: dt-bindings: Add Aspeed PECI Date: Tue, 9 Jan 2018 14:31:21 -0800 Message-Id: <20180109223126.13093-2-jae.hyun.yoo@linux.intel.com> In-Reply-To: <20180109223126.13093-1-jae.hyun.yoo@linux.intel.com> References: <20180109223126.13093-1-jae.hyun.yoo@linux.intel.com> Sender: linux-hwmon-owner@vger.kernel.org List-Id: linux-hwmon@vger.kernel.org This commit adds a dt-bindings document for Aspeed PECI. Signed-off-by: Jae Hyun Yoo --- .../devicetree/bindings/misc/aspeed-peci.txt | 55 ++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/misc/aspeed-peci.txt diff --git a/Documentation/devicetree/bindings/misc/aspeed-peci.txt b/Documentation/devicetree/bindings/misc/aspeed-peci.txt new file mode 100644 index 0000000..d277c73 --- /dev/null +++ b/Documentation/devicetree/bindings/misc/aspeed-peci.txt @@ -0,0 +1,55 @@ +* ASPEED PECI (Platform Environment Control Interface) misc driver. + +Hardware Interfaces: +- This driver implements support for the ASPEED AST2400/2500 PECI which has the + following features: + - Directly connected to APB bus + - Intel PECI 3.1 compliant (PECI 3.0 for AST2400) + - Maximum packet length is 256 bytes (Baseline transmission unit) + - Support up to 8 CPUs and 2 domains per CPU + - Integrate PECI compliant I/O buffers, can connect to PECI bus directly + - Transmit buffer 32 bytes and receive buffer 32 bytes + +Required properties: +- compatible: "aspeed,ast2400-peci" or "aspeed,ast2500-peci" + - aspeed,ast2400-peci: Aspeed AST2400 family PECI control interface + - aspeed,ast2500-peci: Aspeed AST2500 family PECI control interface +- reg: Should contain PECI registers location and length +- interrupts: Should contain PECI interrupt +- clocks: Should contain clock source. = <&clk_clkin>; +- clock_frequency: Should contain the operation frequency of PECI controller. + 187500 ~ 24000000 + +Optional properties: +- msg-timing-nego: 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. + 0 ~ 255 (default: 1) +- addr-timing-nego: 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. + 0 ~ 255 (default: 1) +- rd-sampling-point: Read sampling point selection. + The whole period of a bit time will be divided into 16 time frames. + This value will determine which time frame this controller will sample + PECI signal for data read back. Usually in the middle of a bit time is + the best. + 0 ~ 15 (default: 8) +- cmd_timeout_ms: Command timeout in units of ms + 1 ~ 60000 (default: 1000) + +Example: + peci: peci@1e78b000 { + compatible = "aspeed,ast2500-peci"; + reg = <0x1e78b000 0x60>; + interrupt-controller; + interrupts = <15>; + clocks = <&clk_clkin>; + clock-frequency = <24000000>; + msg-timing-nego = <1>; + addr-timing-nego = <1>; + rd-sampling-point = <8>; + cmd-timeout-ms = <1000>; + }; -- 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: jae.hyun.yoo@linux.intel.com (Jae Hyun Yoo) Date: Tue, 9 Jan 2018 14:31:21 -0800 Subject: [PATCH linux dev-4.10 1/6] Documentation: dt-bindings: Add Aspeed PECI In-Reply-To: <20180109223126.13093-1-jae.hyun.yoo@linux.intel.com> References: <20180109223126.13093-1-jae.hyun.yoo@linux.intel.com> Message-ID: <20180109223126.13093-2-jae.hyun.yoo@linux.intel.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This commit adds a dt-bindings document for Aspeed PECI. Signed-off-by: Jae Hyun Yoo --- .../devicetree/bindings/misc/aspeed-peci.txt | 55 ++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/misc/aspeed-peci.txt diff --git a/Documentation/devicetree/bindings/misc/aspeed-peci.txt b/Documentation/devicetree/bindings/misc/aspeed-peci.txt new file mode 100644 index 0000000..d277c73 --- /dev/null +++ b/Documentation/devicetree/bindings/misc/aspeed-peci.txt @@ -0,0 +1,55 @@ +* ASPEED PECI (Platform Environment Control Interface) misc driver. + +Hardware Interfaces: +- This driver implements support for the ASPEED AST2400/2500 PECI which has the + following features: + - Directly connected to APB bus + - Intel PECI 3.1 compliant (PECI 3.0 for AST2400) + - Maximum packet length is 256 bytes (Baseline transmission unit) + - Support up to 8 CPUs and 2 domains per CPU + - Integrate PECI compliant I/O buffers, can connect to PECI bus directly + - Transmit buffer 32 bytes and receive buffer 32 bytes + +Required properties: +- compatible: "aspeed,ast2400-peci" or "aspeed,ast2500-peci" + - aspeed,ast2400-peci: Aspeed AST2400 family PECI control interface + - aspeed,ast2500-peci: Aspeed AST2500 family PECI control interface +- reg: Should contain PECI registers location and length +- interrupts: Should contain PECI interrupt +- clocks: Should contain clock source. = <&clk_clkin>; +- clock_frequency: Should contain the operation frequency of PECI controller. + 187500 ~ 24000000 + +Optional properties: +- msg-timing-nego: 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. + 0 ~ 255 (default: 1) +- addr-timing-nego: 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. + 0 ~ 255 (default: 1) +- rd-sampling-point: Read sampling point selection. + The whole period of a bit time will be divided into 16 time frames. + This value will determine which time frame this controller will sample + PECI signal for data read back. Usually in the middle of a bit time is + the best. + 0 ~ 15 (default: 8) +- cmd_timeout_ms: Command timeout in units of ms + 1 ~ 60000 (default: 1000) + +Example: + peci: peci at 1e78b000 { + compatible = "aspeed,ast2500-peci"; + reg = <0x1e78b000 0x60>; + interrupt-controller; + interrupts = <15>; + clocks = <&clk_clkin>; + clock-frequency = <24000000>; + msg-timing-nego = <1>; + addr-timing-nego = <1>; + rd-sampling-point = <8>; + cmd-timeout-ms = <1000>; + }; -- 2.7.4