61 lines
2.2 KiB
Diff
61 lines
2.2 KiB
Diff
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From: Jacobe Zang <jacobe.zang@wesion.com>
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To: robh@kernel.org, krzk+dt@kernel.org, heiko@sntech.de,
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kvalo@kernel.org, davem@davemloft.net, edumazet@google.com,
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kuba@kernel.org, pabeni@redhat.com, conor+dt@kernel.org
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Cc: efectn@protonmail.com, dsimic@manjaro.org, jagan@edgeble.ai,
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devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
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linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org,
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arend@broadcom.com, linux-wireless@vger.kernel.org,
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netdev@vger.kernel.org, megi@xff.cz, duoming@zju.edu.cn,
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bhelgaas@google.com, minipli@grsecurity.net,
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brcm80211@lists.linux.dev, brcm80211-dev-list.pdl@broadcom.com,
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nick@khadas.com, Jacobe Zang <jacobe.zang@wesion.com>
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Subject: [PATCH v3 4/5] wifi: brcmfmac: Add optional lpo clock enable support
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Date: Sun, 30 Jun 2024 15:36:04 +0800 [thread overview]
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Message-ID: <20240630073605.2164346-5-jacobe.zang@wesion.com> (raw)
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In-Reply-To: <20240630073605.2164346-1-jacobe.zang@wesion.com>
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WiFi modules often require 32kHz clock to function. Add support to
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enable the clock to PCIe driver.
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Co-developed-by: Ondrej Jirman <megi@xff.cz>
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Signed-off-by: Ondrej Jirman <megi@xff.cz>
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Signed-off-by: Jacobe Zang <jacobe.zang@wesion.com>
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---
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.../net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 10 ++++++++++
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1 file changed, 10 insertions(+)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
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@@ -3,6 +3,7 @@
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* Copyright (c) 2014 Broadcom Corporation
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*/
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+#include <linux/clk.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/firmware.h>
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@@ -2411,6 +2412,7 @@ brcmf_pcie_probe(struct pci_dev *pdev, c
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struct brcmf_pciedev *pcie_bus_dev;
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struct brcmf_core *core;
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struct brcmf_bus *bus;
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+ struct clk *clk;
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if (!id) {
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id = pci_match_id(brcmf_pcie_devid_table, pdev);
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@@ -2422,6 +2424,14 @@ brcmf_pcie_probe(struct pci_dev *pdev, c
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brcmf_dbg(PCIE, "Enter %x:%x\n", pdev->vendor, pdev->device);
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+ clk = devm_clk_get_optional_enabled(&pdev->dev, "lpo");
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+ if (IS_ERR(clk))
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+ return PTR_ERR(clk);
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+ if (clk) {
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+ brcmf_dbg(PCIE, "enabling 32kHz clock\n", pdev->vendor, pdev->device);
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+ clk_set_rate(clk, 32768);
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+ }
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+
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ret = -ENOMEM;
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devinfo = kzalloc(sizeof(*devinfo), GFP_KERNEL);
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if (devinfo == NULL)
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