From patchwork Thu May 21 00:53:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 11561953 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7ED6E739 for ; Thu, 21 May 2020 00:53:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6C38D20758 for ; Thu, 21 May 2020 00:53:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727062AbgEUAxx (ORCPT ); Wed, 20 May 2020 20:53:53 -0400 Received: from mail.baikalelectronics.com ([87.245.175.226]:33416 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726819AbgEUAxw (ORCPT ); Wed, 20 May 2020 20:53:52 -0400 Received: from localhost (unknown [127.0.0.1]) by mail.baikalelectronics.ru (Postfix) with ESMTP id E3B34803078D; Thu, 21 May 2020 00:53:47 +0000 (UTC) X-Virus-Scanned: amavisd-new at baikalelectronics.ru Received: from mail.baikalelectronics.ru ([127.0.0.1]) by localhost (mail.baikalelectronics.ru [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lMhWD8BUGu9b; Thu, 21 May 2020 03:53:46 +0300 (MSK) From: Serge Semin To: Thomas Gleixner , Thomas Bogendoerfer , Daniel Lezcano , Alessandro Zummo , Alexandre Belloni , Rob Herring CC: Serge Semin , Serge Semin , Rob Herring , Alexey Malahov , Paul Burton , Ralf Baechle , Arnd Bergmann , , , , Subject: [PATCH v4 1/7] dt-bindings: rtc: Convert snps,dw-apb-timer to DT schema Date: Thu, 21 May 2020 03:53:14 +0300 Message-ID: <20200521005321.12129-2-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20200521005321.12129-1-Sergey.Semin@baikalelectronics.ru> References: <20200521005321.12129-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Modern device tree bindings are supposed to be created as YAML-files in accordance with DT schema. This commit replaces Synopsys DW Timer legacy bare text binding with YAML file. As before the binding file states that the corresponding dts node is supposed to be compatible with generic DW APB Timer indicated by the "snps,dw-apb-timer" compatible string and to provide a mandatory registers memory range, one timer interrupt, either reference clock source or a fixed clock rate value. It may also have an optional APB bus reference clock phandle specified. Signed-off-by: Serge Semin Reviewed-by: Rob Herring Cc: Alexey Malahov Cc: Thomas Bogendoerfer Cc: Paul Burton Cc: Ralf Baechle Cc: Thomas Gleixner Cc: Daniel Lezcano Cc: Arnd Bergmann Cc: linux-mips@vger.kernel.org --- This binding file doesn't belong to the bindings/rtc seeing it's a pure timer with no rtc facilities like days/months/years counting and alarms. The binding file will be moved to the "Documentation/devicetree/bindings/timer/" directory in the next patch. I also don't know who is the corresponding driver maintainer, so I added Daniel Lezcano to the maintainers schema. Any idea what email should be specified there instead? Changelog v3: - Since it's a conversion patch use GPL-2.0-only SPDX header. - Replace "additionalProperties: false" property with "unevaluatedProperties: false". --- .../devicetree/bindings/rtc/dw-apb.txt | 32 ------- .../bindings/rtc/snps,dw-apb-timer.yaml | 88 +++++++++++++++++++ 2 files changed, 88 insertions(+), 32 deletions(-) delete mode 100644 Documentation/devicetree/bindings/rtc/dw-apb.txt create mode 100644 Documentation/devicetree/bindings/rtc/snps,dw-apb-timer.yaml diff --git a/Documentation/devicetree/bindings/rtc/dw-apb.txt b/Documentation/devicetree/bindings/rtc/dw-apb.txt deleted file mode 100644 index c703d51abb6c..000000000000 --- a/Documentation/devicetree/bindings/rtc/dw-apb.txt +++ /dev/null @@ -1,32 +0,0 @@ -* Designware APB timer - -Required properties: -- compatible: One of: - "snps,dw-apb-timer" - "snps,dw-apb-timer-sp" - "snps,dw-apb-timer-osc" -- reg: physical base address of the controller and length of memory mapped - region. -- interrupts: IRQ line for the timer. -- either clocks+clock-names or clock-frequency properties - -Optional properties: -- clocks : list of clock specifiers, corresponding to entries in - the clock-names property; -- clock-names : should contain "timer" and "pclk" entries, matching entries - in the clocks property. -- clock-frequency: The frequency in HZ of the timer. -- clock-freq: For backwards compatibility with picoxcell - -If using the clock specifiers, the pclk clock is optional, as not all -systems may use one. - - -Example: - timer@ffe00000 { - compatible = "snps,dw-apb-timer"; - interrupts = <0 170 4>; - reg = <0xffe00000 0x1000>; - clocks = <&timer_clk>, <&timer_pclk>; - clock-names = "timer", "pclk"; - }; diff --git a/Documentation/devicetree/bindings/rtc/snps,dw-apb-timer.yaml b/Documentation/devicetree/bindings/rtc/snps,dw-apb-timer.yaml new file mode 100644 index 000000000000..002fe1ee709b --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/snps,dw-apb-timer.yaml @@ -0,0 +1,88 @@ +# SPDX-License-Identifier: GPL-2.0-only +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/rtc/snps,dw-apb-timer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Synopsys DesignWare APB Timer + +maintainers: + - Daniel Lezcano + +properties: + compatible: + oneOf: + - const: snps,dw-apb-timer + - enum: + - snps,dw-apb-timer-sp + - snps,dw-apb-timer-osc + deprecated: true + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + minItems: 1 + items: + - description: Timer ticks reference clock source + - description: APB interface clock source + + clock-names: + minItems: 1 + items: + - const: timer + - const: pclk + + clock-frequency: true + + clock-freq: + $ref: "/schemas/types.yaml#/definitions/uint32" + description: | + Has the same meaning as the 'clock-frequency' property - timer clock + frequency in HZ, but is defined only for the backwards compatibility + with the picoxcell platform. + +unevaluatedProperties: false + +required: + - compatible + - reg + - interrupts + +oneOf: + - required: + - clocks + - clock-names + - required: + - clock-frequency + - required: + - clock-freq + +examples: + - | + timer@ffe00000 { + compatible = "snps,dw-apb-timer"; + interrupts = <0 170 4>; + reg = <0xffe00000 0x1000>; + clocks = <&timer_clk>, <&timer_pclk>; + clock-names = "timer", "pclk"; + }; + - | + timer@ffe00000 { + compatible = "snps,dw-apb-timer"; + interrupts = <0 170 4>; + reg = <0xffe00000 0x1000>; + clocks = <&timer_clk>; + clock-names = "timer"; + }; + - | + timer@ffe00000 { + compatible = "snps,dw-apb-timer"; + interrupts = <0 170 4>; + reg = <0xffe00000 0x1000>; + clock-frequency = <25000000>; + }; +...