From patchwork Thu Jan 28 17:52:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 12054313 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com 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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 01E7DC433DB for ; Thu, 28 Jan 2021 17:55:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C0D1E64E17 for ; Thu, 28 Jan 2021 17:55:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229854AbhA1Ryw (ORCPT ); Thu, 28 Jan 2021 12:54:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231194AbhA1RyN (ORCPT ); Thu, 28 Jan 2021 12:54:13 -0500 Received: from mail-lf1-x131.google.com (mail-lf1-x131.google.com [IPv6:2a00:1450:4864:20::131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 71DC7C061354 for ; Thu, 28 Jan 2021 09:52:40 -0800 (PST) Received: by mail-lf1-x131.google.com with SMTP id a12so8778550lfb.1 for ; Thu, 28 Jan 2021 09:52:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=YhHWk0hpFtEKwreT9I82hjXdPuDIowSRXuqfI7wusBw=; b=R9YeBg0DyiIE6kJi5OD9vsC7mHNBKj6kk1eTAc5k+ISlrHTzWAW7L+3rGlBeSJ0wX+ aLIU2JTcNa7f/gU1Z94ZetMvrp1C5f+WiaP7yjejfeMwdg86tjMc8go0VwR7UnIl7mvl hCK860uG9MqhEI/MOj1Hy58cWxTE2DelBPtkH0QEHV2qfuLrAIQi/Q+B7cHXc0ctqYuK yzruaO5j7WuAIqxJo8kfGNupvaV6G7N4sebSgIbH5Tdb1E8xWsCVcDvdimdzqx84hNwv +F/6oW36Y6CJ+rjkZkCICnJwRvn+ATN+WgjQN3cZ6DD/dGNhsTT/zelpkldhbNGw2zUP PU6g== 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:mime-version:content-transfer-encoding; bh=YhHWk0hpFtEKwreT9I82hjXdPuDIowSRXuqfI7wusBw=; b=YKRb4ZHwYrM6tFSpZ/eEcBsk+0Vb54ZZ6PMtjIQzuCv3M6DV2f1ctFrxP3yP/0Txib UV9DIAvfYiBSuwfVstKIzX9wghY8pG31A4XGIXcuOiccThBjwWlVmQ5TRtnJyj/tCxvk nSfMeBtjrLfJY47gutdRBP9Q+qE7BUPJBEgnaoVyKa7CUYRfh8JA/+serkPfktqUkF6I wQ/XEREoPSecJchr4JkOqhHEMzwqVVGLTbNrQ2gD43vjgceZkYEKtKKnfG7lJkY8nBld 1SnGa5IItuGtE8SRlsVN2R+8N77xgBBC3pV6V1pzvMrupT5gSUei1UgdsP0Xj/9oLsnh jhpg== X-Gm-Message-State: AOAM532qkFu1vJ5cxS4hNFmt/aJEu8GYi6TIKYvKf8KjDpr+tFXIO0rK BIamuyCGLZuQOJFye7vQFqLXZQ== X-Google-Smtp-Source: ABdhPJxXq6Enj6CntWrJrW6xnC0/gzPkKOVwIt8Y/oZlEjb+wXCD0OMGAazEx9jh8prgW3NhgdSEuA== X-Received: by 2002:ac2:44db:: with SMTP id d27mr118897lfm.248.1611856358975; Thu, 28 Jan 2021 09:52:38 -0800 (PST) Received: from eriador.lan ([94.25.229.83]) by smtp.gmail.com with ESMTPSA id w10sm2216119ljj.37.2021.01.28.09.52.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Jan 2021 09:52:38 -0800 (PST) From: Dmitry Baryshkov To: Andy Gross , Bjorn Andersson , Rob Herring , Arnd Bergmann , Greg Kroah-Hartman , Stanimir Varbanov , Lorenzo Pieralisi , Bjorn Helgaas Cc: linux-arm-msm@vger.kernel.org, Manivannan Sadhasivam , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Subject: [PATCH v2 4/5] arm64: dtb: qcom: qrb5165-rb5: add bridge@0,0 to power up qca6391 chip Date: Thu, 28 Jan 2021 20:52:24 +0300 Message-Id: <20210128175225.3102958-5-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210128175225.3102958-1-dmitry.baryshkov@linaro.org> References: <20210128175225.3102958-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org If QCA6391 chip (connected to PCIe0) is not powered at the PCIe probe time, PCIe0 bus probe will timeout and the device will not be detected. So use qca6391 as pcie0's bridge power-domain. This allows us to make sure that QCA6391 chip is powered on before PCIe0 probe happens. Signed-off-by: Dmitry Baryshkov --- arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts index 2b0c1cc9333b..b39a9729395f 100644 --- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts +++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts @@ -581,6 +581,18 @@ &pcie0 { wake-gpio = <&tlmm 81 GPIO_ACTIVE_HIGH>; pinctrl-names = "default"; pinctrl-0 = <&pcie0_default_state>; + + bridge@0,0 { + compatible = "pci17cb,010b"; + reg = <0 0 0 0 0>; + + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <1>; + + /* Power on QCA639x chip sitting behind this bridge. */ + power-domains = <&qca6391>; + }; }; &pcie0_phy {