From patchwork Fri Oct 22 14:06:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Quinlan X-Patchwork-Id: 1544969 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20210112 header.b=d3sxm3/W; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4HbR4f3h47z9sRR for ; Sat, 23 Oct 2021 01:07:30 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232495AbhJVOJj (ORCPT ); Fri, 22 Oct 2021 10:09:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49300 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231741AbhJVOJj (ORCPT ); Fri, 22 Oct 2021 10:09:39 -0400 Received: from mail-pg1-x529.google.com (mail-pg1-x529.google.com [IPv6:2607:f8b0:4864:20::529]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6E35CC061764; Fri, 22 Oct 2021 07:07:21 -0700 (PDT) Received: by mail-pg1-x529.google.com with SMTP id f5so3390892pgc.12; Fri, 22 Oct 2021 07:07:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id; bh=/agOmz3U1kToZEfpYBZeBgjrCZIKo2iOjjILiNmM8SI=; b=d3sxm3/W05ryib4Gky/py2cbH7wU13kNcndQ+arph/+tRLtrUST0ILkziVU5hRxdFL tFkN2D9lSgK0UdB04rd4/e6nrWxa+ctJ31FRpvMB7NugBGNVBuACNtzAtpdOAIp1xk21 lFP8iGhBKr/1dU1KB37z+MQ4rbY9WxnDCFYaUygZm/6W69Hrf2qpo7w7aN7/HCFWVk3r tx2er1jnuRbGsrKXsBbTGSNCw+/o48o0zckbQ2sHe7JSfd9zn1/mom01ueO+1JRFdMqz pjQtYoOYwbgzyNqh8uafiDxRwJdVMzaCvMOpABzEkRdLb8EGgeD55xdoxY3ddqWsvjeH AXpw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=/agOmz3U1kToZEfpYBZeBgjrCZIKo2iOjjILiNmM8SI=; b=D6enRBDG0ZuPrSDgiuL3rZFloyptC06bdbXdd0l2HgdLvO6HFYdIOzc1ecEgjoVN1a 8R3d6CBocGeju42e6DV9RQuhV7ob3yEOhu/45a+WCkXxvTnu94RmpowyNQe1arTLgRHL MK1x8+fGZefSFZijsm7Fm7bf4fkeFo8TF4KlVxQXE1Po+V3PuGn4Cr4fPDuHAf1jLooM Wo+AjUwiAZ6JsbmOLb08E1Pl2KJscSlPYuoGwQ2TqF3+g02NTGVJ8OpXK8WLI1DggkCM 2D8MYHLp90P1n83Gv/QTX1J1mUXGDubJNNi95mkw5OxooGekU08ZJ0RMogoQoPwDVfG4 56cg== X-Gm-Message-State: AOAM533afWKl5n6e6p94nfQDTr8ckK25kwbv352I1HoDE2gpFyS+l2nE q+R97MLH0QHBOpCW/B2WV7ZfdhzqjSu7cA== X-Google-Smtp-Source: ABdhPJzhIgzFcIrVWCevrBOk6am7e3ctM7HrhXOX6Kb2DYJntrfUXK6b1J+DZKiZ++UxKQu4kB7wyw== X-Received: by 2002:a65:6a0a:: with SMTP id m10mr9514pgu.82.1634911640310; Fri, 22 Oct 2021 07:07:20 -0700 (PDT) Received: from stbsrv-and-01.and.broadcom.net ([192.19.11.250]) by smtp.gmail.com with ESMTPSA id e12sm9482990pfl.67.2021.10.22.07.07.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Oct 2021 07:07:19 -0700 (PDT) From: Jim Quinlan To: linux-pci@vger.kernel.org, Nicolas Saenz Julienne , Rob Herring , Mark Brown , bcm-kernel-feedback-list@broadcom.com, jim2101024@gmail.com, james.quinlan@broadcom.com Cc: Andy Shevchenko , Bhaskar Chowdhury , Claire Chang , devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), Greg Kroah-Hartman , Konrad Rzeszutek Wilk , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), linux-kernel@vger.kernel.org (open list), linux-rpi-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), Mauro Carvalho Chehab , "Rafael J. Wysocki" , Rajat Jain , Saenz Julienne , Saravana Kannan , Thomas Gleixner Subject: [PATCH v5 0/6] PCI: brcmstb: have host-bridge turn on sub-device power Date: Fri, 22 Oct 2021 10:06:53 -0400 Message-Id: <20211022140714.28767-1-jim2101024@gmail.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org v5 [NOTE: It has been a while since v4. Sorry] -- See "PCI: allow for callback to prepare nascent subdev" commit message for the cornerstone of this patchset and the reasons behind it. This is a new commit. -- The RC driver now looks into its DT children and turns on regulators for a sub-device, and this occurs prior to PCIe link as it must. -- Dropped commits not related to the focus of this patchset. v4 [NOTE: I'm not sure this fixes RobH and MarkB constraints but I'd like to use this pullreq as a basis for future discussion.] [Commit: Add bindings for ...] -- Fix syntax error in YAML bindings example (RobH) -- {vpcie12v,vpcie3v3}-supply props are back in root complex DT node (I believe RobH said this was okay) [Commit: Add control of ..] -- Do not do global search for regulator; now we look specifically for the property {vpcie12v,vpcie3v3}-supply in the root complex DT node and then call devm_regulator_bulk_get() (MarkB) -- Use devm_regulator_bulk_get() (Bjorn) -- s/EP/slot0 device/ (Bjorn) -- Spelling, capitalization (Bjorn) -- Have brcm_phy_stop() return a void (Bjorn) [Commit: Do not turn off ...] -- Capitalization (Bjorn) [Commit: Check return value ...] -- Commit message content (Bjorn) -- Move 6/6 hunk to 2/6 where it belongs (Bjorn) -- Move the rest of 6/6 before all other commits (Bjorn) v3 -- Driver now searches for EP DT subnode for any regulators to turn on. If present, these regulators have the property names "vpcie12v-supply" and "vpcie3v3-supply". The existence of these regulators in the EP subnode are currently pending as a pullreq in pci-bus.yaml at https://github.com/devicetree-org/dt-schema/pull/54 (MarkB, RobH). -- Check return of brcm_set_regulators() (Florian) -- Specify one regulator string per line for easier update (Florian) -- Author/Committer/Signoff email changed from that of V2 from 'james.quinlan@broadcom.com' to 'jim2101024@gmail.com'. v2 -- Use regulator bulk API rather than multiple calls (MarkB). v1 -- Bindings are added for fixed regulators that may power the EP device. -- The brcmstb RC driver is modified to control these regulators during probe, suspend, and resume. -- 7216 type SOCs have additional error reporting HW and a panic handler is added to dump its info. -- A missing return value check is added. Jim Quinlan (6): dt-bindings: PCI: Add bindings for Brcmstb EP voltage regulators PCI: allow for callback to prepare nascent subdev PCI: brcmstb: split brcm_pcie_setup() into two funcs PCI: brcmstb: Add control of subdevice voltage regulators PCI: brcmstb: Do not turn off regulators if EP can wake up PCI: brcmstb: change brcm_phy_stop() to return void .../bindings/pci/brcm,stb-pcie.yaml | 23 ++ drivers/base/core.c | 5 + drivers/pci/controller/pcie-brcmstb.c | 231 ++++++++++++++++-- drivers/pci/probe.c | 47 +++- include/linux/device.h | 3 + include/linux/pci.h | 3 + 6 files changed, 286 insertions(+), 26 deletions(-)