linux-kernel - [PATCH v1 2/2] usb: musb: mpfs: detect UPLI external vbus control requirement from DT

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Message-ID: <20240531-spilt-garage-ed2113d628e8@wendy>
Date: Fri, 31 May 2024 08:04:32 +0100
From: Conor Dooley <conor.dooley@...rochip.com>
To: <linux-usb@...r.kernel.org>
CC: <conor@...nel.org>, <conor.dooley@...rochip.com>, Daire McNamara
	<daire.mcnamara@...rochip.com>, Greg Kroah-Hartman
	<gregkh@...uxfoundation.org>, Rob Herring <robh@...nel.org>, "Krzysztof
 Kozlowski" <krzysztof.kozlowski+dt@...aro.org>, Bin Liu <b-liu@...com>,
	<linux-riscv@...ts.infradead.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v1 2/2] usb: musb: mpfs: detect UPLI external vbus control requirement from DT

The musb driver core already supports external vbus control for ULPI
PHYs, but none of the drivers actually enable it. A customer reported
needing this for their device, and now that a DT property for detecting
this configuration exists, read the property to enable the feature.

Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
 drivers/usb/musb/mpfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/musb/mpfs.c b/drivers/usb/musb/mpfs.c
index f0f56df388355..29c7e5cdb230e 100644
--- a/drivers/usb/musb/mpfs.c
+++ b/drivers/usb/musb/mpfs.c
@@ -190,6 +190,8 @@ static int mpfs_probe(struct platform_device *pdev)
 	pdata->config = &mpfs_musb_hdrc_config;
 	pdata->platform_ops = &mpfs_ops;
 
+	pdata->extvbus = device_property_read_bool(dev, "microchip,ext-vbus-drv");
+
 	pdata->mode = usb_get_dr_mode(dev);
 	if (pdata->mode == USB_DR_MODE_UNKNOWN) {
 		dev_info(dev, "No dr_mode property found, defaulting to otg\n");
-- 
2.43.2