From patchwork Mon Oct 10 05:33:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunyan Zhang X-Patchwork-Id: 614984 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7C1D8C433FE for ; Mon, 10 Oct 2022 05:34:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231229AbiJJFe2 (ORCPT ); Mon, 10 Oct 2022 01:34:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46250 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231211AbiJJFe0 (ORCPT ); Mon, 10 Oct 2022 01:34:26 -0400 Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 11C134F6B7; Sun, 9 Oct 2022 22:34:24 -0700 (PDT) Received: by mail-pl1-x62f.google.com with SMTP id d24so9453939pls.4; Sun, 09 Oct 2022 22:34:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=0D8oUaZmT4I0yy6RsHfeXtojWjxAHAVwrgD0XhAhavM=; b=BcmTe9ZOMJS02cLjncHBrX3ixmotFUfq0Iqp29boUI1dNmRoCcN1HCDJnQ4jOBTCT3 TwBMh4Z/I5C44/qD3gIuDgEi6BjvMDLqDSCZZUW/Z/JLSxP03cauir1RtliHtdxhPMui SRaJj3hCy4HcO+2pO80b2+H87hlN7yrdSOG07p+vRzS1xfptIir51BT/mftzid9mfhUV daeozj0FcxiGoVdmJJxIkEnYXCmdv2IMDqHLGi0rEWLbVUE+Jf/T4vMNWqZsdI9/A4Gk ZAdQ7oTYiGYeLlh+Edw4nV3RsU5ybRtpq+OoEcHrIh1qTwhcSGJsThWfdiFTS/L3MiDT EYXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=0D8oUaZmT4I0yy6RsHfeXtojWjxAHAVwrgD0XhAhavM=; b=Xl369Hs/GCPoi22gsY9CG6StHjd8hxKW9LcNHe6j9RVIbgmHnX7ryO69opXwEnewSB tE4lj6LT3zPJtau3AR17cGVZMKOaNiWDfScZSjTsmGqovDSz7UhLVIKl3hnh+Uvwusyc xITlZSkoOeYeDp03PSEqmpxeReZyCR8JUXpqbGA3XhAcA9sz/eUXzET3v5xdC4kzPbxa f/l7cU4n0xFKMxJXWm4IDjXeT1Ld+HDagcHZd/wYZmsj6VePMzQAF95JpxbvMBEAoBT/ qlf7O+FrvA6IBn6Meu5hRtIMqw6srSrQ1AAHZRFV5+4BOCnYQgmfIVYEz9dfUHBoJc3y 90EA== X-Gm-Message-State: ACrzQf3FFjya/NqHQIKkHNnalrYoaAVUG6CaVYBkE5gxlfvaid7GiLwr M260bRC+DO7EUqT0KougdRQ= X-Google-Smtp-Source: AMsMyM7SvEs1BG6kD8J8xpLVGDgI5heyoyS3dMDqLyVDwngQ66wESe0nZnRFH0LKPXSvWLRpiYO/NA== X-Received: by 2002:a17:902:d2cc:b0:182:d901:5d28 with SMTP id n12-20020a170902d2cc00b00182d9015d28mr1399214plc.142.1665380063136; Sun, 09 Oct 2022 22:34:23 -0700 (PDT) Received: from xm06403pcu.spreadtrum.com ([117.18.48.102]) by smtp.gmail.com with ESMTPSA id 126-20020a620584000000b00562519cad97sm5891920pff.19.2022.10.09.22.34.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 09 Oct 2022 22:34:22 -0700 (PDT) From: Chunyan Zhang To: Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, Baolin Wang , Orson Zhai , Chunyan Zhang , Chunyan Zhang , Cixi Geng , LKML Subject: [PATCH V3 2/3] dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml Date: Mon, 10 Oct 2022 13:33:37 +0800 Message-Id: <20221010053338.22580-3-zhang.lyra@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221010053338.22580-1-zhang.lyra@gmail.com> References: <20221010053338.22580-1-zhang.lyra@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Chunyan Zhang Convert the Unisoc EIC controller binding to DT schema format. Update the maxItems of 'reg' property, since the current gpio-eic-sprd driver supports 3 reg items. Also removed a few similar examples. Signed-off-by: Chunyan Zhang --- .../bindings/gpio/gpio-eic-sprd.txt | 97 ----------------- .../bindings/gpio/sprd,gpio-eic.yaml | 103 ++++++++++++++++++ 2 files changed, 103 insertions(+), 97 deletions(-) delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt create mode 100644 Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml diff --git a/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt b/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt deleted file mode 100644 index 54040a2bfe3a..000000000000 --- a/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt +++ /dev/null @@ -1,97 +0,0 @@ -Spreadtrum EIC controller bindings - -The EIC is the abbreviation of external interrupt controller, which can -be used only in input mode. The Spreadtrum platform has 2 EIC controllers, -one is in digital chip, and another one is in PMIC. The digital chip EIC -controller contains 4 sub-modules: EIC-debounce, EIC-latch, EIC-async and -EIC-sync. But the PMIC EIC controller contains only one EIC-debounce sub- -module. - -The EIC-debounce sub-module provides up to 8 source input signal -connections. A debounce mechanism is used to capture the input signals' -stable status (millisecond resolution) and a single-trigger mechanism -is introduced into this sub-module to enhance the input event detection -reliability. In addition, this sub-module's clock can be shut off -automatically to reduce power dissipation. Moreover the debounce range -is from 1ms to 4s with a step size of 1ms. The input signal will be -ignored if it is asserted for less than 1 ms. - -The EIC-latch sub-module is used to latch some special power down signals -and generate interrupts, since the EIC-latch does not depend on the APB -clock to capture signals. - -The EIC-async sub-module uses a 32kHz clock to capture the short signals -(microsecond resolution) to generate interrupts by level or edge trigger. - -The EIC-sync is similar with GPIO's input function, which is a synchronized -signal input register. It can generate interrupts by level or edge trigger -when detecting input signals. - -Required properties: -- compatible: Should be one of the following: - "sprd,sc9860-eic-debounce", - "sprd,sc9860-eic-latch", - "sprd,sc9860-eic-async", - "sprd,sc9860-eic-sync", - "sprd,sc2731-eic". -- reg: Define the base and range of the I/O address space containing - the GPIO controller registers. -- gpio-controller: Marks the device node as a GPIO controller. -- #gpio-cells: Should be <2>. The first cell is the gpio number and - the second cell is used to specify optional parameters. -- interrupt-controller: Marks the device node as an interrupt controller. -- #interrupt-cells: Should be <2>. Specifies the number of cells needed - to encode interrupt source. -- interrupts: Should be the port interrupt shared by all the gpios. - -Example: - eic_debounce: gpio@40210000 { - compatible = "sprd,sc9860-eic-debounce"; - reg = <0 0x40210000 0 0x80>; - gpio-controller; - #gpio-cells = <2>; - interrupt-controller; - #interrupt-cells = <2>; - interrupts = ; - }; - - eic_latch: gpio@40210080 { - compatible = "sprd,sc9860-eic-latch"; - reg = <0 0x40210080 0 0x20>; - gpio-controller; - #gpio-cells = <2>; - interrupt-controller; - #interrupt-cells = <2>; - interrupts = ; - }; - - eic_async: gpio@402100a0 { - compatible = "sprd,sc9860-eic-async"; - reg = <0 0x402100a0 0 0x20>; - gpio-controller; - #gpio-cells = <2>; - interrupt-controller; - #interrupt-cells = <2>; - interrupts = ; - }; - - eic_sync: gpio@402100c0 { - compatible = "sprd,sc9860-eic-sync"; - reg = <0 0x402100c0 0 0x20>; - gpio-controller; - #gpio-cells = <2>; - interrupt-controller; - #interrupt-cells = <2>; - interrupts = ; - }; - - pmic_eic: gpio@300 { - compatible = "sprd,sc2731-eic"; - reg = <0x300>; - interrupt-parent = <&sc2731_pmic>; - interrupts = <5 IRQ_TYPE_LEVEL_HIGH>; - gpio-controller; - #gpio-cells = <2>; - interrupt-controller; - #interrupt-cells = <2>; - }; diff --git a/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml b/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml new file mode 100644 index 000000000000..a21350bd0f2c --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml @@ -0,0 +1,103 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright 2022 Unisoc Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/sprd,gpio-eic.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Unisoc EIC controller + +maintainers: + - Orson Zhai + - Baolin Wang + - Chunyan Zhang + +description: | + The EIC is the abbreviation of external interrupt controller, which can + be used only in input mode. The Spreadtrum platform has 2 EIC controllers, + one is in digital chip, and another one is in PMIC. The digital chip EIC + controller contains 4 sub-modules, i.e. EIC-debounce, EIC-latch, EIC-async and + EIC-sync. But the PMIC EIC controller contains only one EIC-debounce sub- + module. + + The EIC-debounce sub-module provides up to 8 source input signal + connections. A debounce mechanism is used to capture the input signals' + stable status (millisecond resolution) and a single-trigger mechanism + is introduced into this sub-module to enhance the input event detection + reliability. In addition, this sub-module's clock can be shut off + automatically to reduce power dissipation. Moreover the debounce range + is from 1ms to 4s with a step size of 1ms. The input signal will be + ignored if it is asserted for less than 1 ms. + + The EIC-latch sub-module is used to latch some special power down signals + and generate interrupts, since the EIC-latch does not depend on the APB + clock to capture signals. + + The EIC-async sub-module uses a 32kHz clock to capture the short signals + (microsecond resolution) to generate interrupts by level or edge trigger. + + The EIC-sync is similar with GPIO's input function, which is a synchronized + signal input register. It can generate interrupts by level or edge trigger + when detecting input signals. + +properties: + compatible: + enum: + - sprd,sc9860-eic-debounce + - sprd,sc9860-eic-latch + - sprd,sc9860-eic-async + - sprd,sc9860-eic-sync + - sprd,sc2731-eic + + reg: + minItems: 1 + maxItems: 3 + description: + EIC controller can support maximum 3 banks which has its own + address base. + + gpio-controller: true + + "#gpio-cells": + const: 2 + + interrupt-controller: true + + "#interrupt-cells": + const: 2 + + interrupts: + maxItems: 1 + description: + The interrupt shared by all GPIO lines for this controller. + +required: + - compatible + - reg + - gpio-controller + - "#gpio-cells" + - interrupt-controller + - "#interrupt-cells" + - interrupts + +additionalProperties: false + +examples: + - | + #include + + soc { + #address-cells = <2>; + #size-cells = <2>; + + eic_debounce: gpio@40210000 { + compatible = "sprd,sc9860-eic-debounce"; + reg = <0 0x40210000 0 0x80>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + interrupts = ; + }; + }; +...