From patchwork Wed Dec 30 20:59:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabio Estevam X-Patchwork-Id: 355317 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 625A4C43381 for ; Wed, 30 Dec 2020 21:00:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 45D6520776 for ; Wed, 30 Dec 2020 21:00:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726512AbgL3VAN (ORCPT ); Wed, 30 Dec 2020 16:00:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56772 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726509AbgL3VAN (ORCPT ); Wed, 30 Dec 2020 16:00:13 -0500 Received: from mail-qk1-x729.google.com (mail-qk1-x729.google.com [IPv6:2607:f8b0:4864:20::729]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 082C5C061799; Wed, 30 Dec 2020 12:59:33 -0800 (PST) Received: by mail-qk1-x729.google.com with SMTP id 186so14974985qkj.3; Wed, 30 Dec 2020 12:59:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=/QQ50Ka1R1+U/IuErmUoFYUnJn6zHeQSm2AvNXowNLI=; b=c6sMjIaoTEUEMda470RAYFzwtifrbfH1IPQUw7bQkprFlgL+tbRrTJL6gWTW3cscj2 33S862Lko+7qm1PzaYWfQhN5/3PsxYS2rKsxQgCO2ysgL8haGl2jDghOi1hAYGlTJumP WWEcrf00FIQG6JIBXi9MbmHD2fCeuqV53hgdfiKXSnlRJ0XVRUK6FyqAkI0InZsTFih8 sCcvbx9DuD5FDVansvKmchAApMfQz2RDvhLTsPW2u67jlBmvLyxMD56SVLOmHWcG9iy1 PQ8sZAa8fZTWI5y1dLJwkbyAwwuWfv1VidJEcD0ujPNuHZRq5JAWWg+/rJM4MVe/Nrf0 RMmA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=/QQ50Ka1R1+U/IuErmUoFYUnJn6zHeQSm2AvNXowNLI=; b=jfL++0LCJcdMp5jUhR7Fh4Uj6eFTJ63LyBZQSjvZHQrZoHUP8hugaw5lPdTsuMaXmn RNLi6mLQPS6eJE8PViOS53BDSuQ7nJztiT/3j+sZdh3Fb3bsozet77SWKWs9JryWijVH Uhl6TopRbMwY4AglByw5gIsWU8JvptkQysabDeH1wSNNpghpz8EuPFF/Mc6yRelTUCmW 2ilF4qJnSzcE7UackSYFmsZiAHqv9MkKisXwg81sk7kyD+7rif9Fi8hDwq4Vv+o28ICD Ezirth06Ca6NRgzLaCzquIMnrfInQoyf1RH94efrVr8k9j5jtnzAe9+ga5khQyRMuhKn OV8A== X-Gm-Message-State: AOAM530Ts+EiBhGmo8uXwFT5Wjau5hHwJIvz+q5KI6ZvdoeKpql7AkDx rm3tqAFiJvAqaJkr/HynO2k= X-Google-Smtp-Source: ABdhPJwJezOL07gJfrppUlnz/ZiX1biblN7mipFNmTviy1s0R2N2LxGsoiNty4nKfrtjzkOPpym/xg== X-Received: by 2002:a37:ac0f:: with SMTP id e15mr54617417qkm.450.1609361972259; Wed, 30 Dec 2020 12:59:32 -0800 (PST) Received: from localhost.localdomain ([2804:14c:482:a80:d66:6051:ad08:aa32]) by smtp.gmail.com with ESMTPSA id m41sm20892474qtc.28.2020.12.30.12.59.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Dec 2020 12:59:31 -0800 (PST) From: Fabio Estevam To: linus.walleij@linaro.org Cc: robh+dt@kernel.org, linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, sandor.yu@nxp.com, Fabio Estevam Subject: [PATCH v2 2/2] gpio: 74x164: Introduce the 'registers-default' property Date: Wed, 30 Dec 2020 17:59:16 -0300 Message-Id: <20201230205916.8875-2-festevam@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201230205916.8875-1-festevam@gmail.com> References: <20201230205916.8875-1-festevam@gmail.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Sandor Yu On the imx7d-sdb board, there is one output pin of the 74x164 that controls all peripherals power supply (PERI_3V). This pin should be at high voltage level when the 74x164 is probed, otherwise the modules dependent on PERI_3V3 will not be powered. Add a new optional property called 'registers-default' that allows describing the default output value for each shift register. Signed-off-by: Fabio Estevam --- Changes since v1: - Use the more generic device_property_read_u8_array(), which also works in ACPI. drivers/gpio/gpio-74x164.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpio/gpio-74x164.c b/drivers/gpio/gpio-74x164.c index 05637d585152..a11637518774 100644 --- a/drivers/gpio/gpio-74x164.c +++ b/drivers/gpio/gpio-74x164.c @@ -141,6 +141,9 @@ static int gen_74x164_probe(struct spi_device *spi) chip->registers = nregs; chip->gpio_chip.ngpio = GEN_74X164_NUMBER_GPIOS * chip->registers; + device_property_read_u8_array(&spi->dev, "registers-default", + chip->buffer, chip->registers); + chip->gpio_chip.can_sleep = true; chip->gpio_chip.parent = &spi->dev; chip->gpio_chip.owner = THIS_MODULE;