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Sun, 30 Jun 2024 07:36:34 +0000 Received: from TYZPR03MB7001.apcprd03.prod.outlook.com ([fe80::78dd:5e68:1a9c:36c0]) by TYZPR03MB7001.apcprd03.prod.outlook.com ([fe80::78dd:5e68:1a9c:36c0%6]) with mapi id 15.20.7719.028; Sun, 30 Jun 2024 07:36:34 +0000 From: Jacobe Zang To: robh@kernel.org, krzk+dt@kernel.org, heiko@sntech.de, kvalo@kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, conor+dt@kernel.org Cc: efectn@protonmail.com, dsimic@manjaro.org, jagan@edgeble.ai, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, arend@broadcom.com, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, megi@xff.cz, duoming@zju.edu.cn, bhelgaas@google.com, minipli@grsecurity.net, brcm80211@lists.linux.dev, brcm80211-dev-list.pdl@broadcom.com, nick@khadas.com, Jacobe Zang Subject: [PATCH v3 4/5] wifi: brcmfmac: Add optional lpo clock enable support Date: Sun, 30 Jun 2024 15:36:04 +0800 Message-Id: <20240630073605.2164346-5-jacobe.zang@wesion.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240630073605.2164346-1-jacobe.zang@wesion.com> References: <20240630073605.2164346-1-jacobe.zang@wesion.com> X-ClientProxiedBy: SI1PR02CA0056.apcprd02.prod.outlook.com (2603:1096:4:1f5::7) To TYZPR03MB7001.apcprd03.prod.outlook.com (2603:1096:400:26a::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: TYZPR03MB7001:EE_|PUZPR03MB7234:EE_ X-MS-Office365-Filtering-Correlation-Id: f63cd49e-f8bf-4b5c-521c-08dc98d75e2e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|376014|52116014|1800799024|7416014|38350700014; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org WiFi modules often require 32kHz clock to function. Add support to enable the clock to PCIe driver. Co-developed-by: Ondrej Jirman Signed-off-by: Ondrej Jirman Signed-off-by: Jacobe Zang Reviewed-by: Arend van Spriel --- .../net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c index 06698a714b523..e84f562fc91b8 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c @@ -3,6 +3,7 @@ * Copyright (c) 2014 Broadcom Corporation */ +#include #include #include #include @@ -2411,6 +2412,7 @@ brcmf_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id) struct brcmf_pciedev *pcie_bus_dev; struct brcmf_core *core; struct brcmf_bus *bus; + struct clk *clk; if (!id) { id = pci_match_id(brcmf_pcie_devid_table, pdev); @@ -2422,6 +2424,14 @@ brcmf_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id) brcmf_dbg(PCIE, "Enter %x:%x\n", pdev->vendor, pdev->device); + clk = devm_clk_get_optional_enabled(&pdev->dev, "lpo"); + if (IS_ERR(clk)) + return PTR_ERR(clk); + if (clk) { + brcmf_dbg(PCIE, "enabling 32kHz clock\n", pdev->vendor, pdev->device); + clk_set_rate(clk, 32768); + } + ret = -ENOMEM; devinfo = kzalloc(sizeof(*devinfo), GFP_KERNEL); if (devinfo == NULL)