From: Florian Fainelli <florian.fainelli@broadcom.com>
To: linux-arm-kernel@lists.infradead.org
Cc: "Florian Fainelli" <florian.fainelli@broadcom.com>,
"Vinod Koul" <vkoul@kernel.org>,
"Neil Armstrong" <neil.armstrong@linaro.org>,
"Manivannan Sadhasivam" <mani@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Ray Jui" <rjui@broadcom.com>,
"Scott Branden" <sbranden@broadcom.com>,
"Broadcom internal kernel review list"
<bcm-kernel-feedback-list@broadcom.com>,
"Alan Stern" <stern@rowland.harvard.edu>,
"Rafał Miłecki" <rafal@milecki.pl>,
"Kishon Vijay Abraham I" <kishon@kernel.org>,
"Yendapally Reddy Dhananjaya Reddy"
<yendapally.reddy@broadcom.com>,
linux-phy@lists.infradead.org (open list:GENERIC PHY FRAMEWORK),
devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
FLATTENED DEVICE TREE BINDINGS),
linux-kernel@vger.kernel.org (open list),
linux-usb@vger.kernel.org (open list:USB SUBSYSTEM)
Subject: [PATCH 7/9] usb: host: ehci-platform: Set the FIFO threshold on NSP
Date: Wed, 21 Oct 2026 10:28:16 -0700 [thread overview]
Message-ID: <20261021172819.668120-8-florian.fainelli@broadcom.com> (raw)
In-Reply-To: <20261021172819.668120-1-florian.fainelli@broadcom.com>
The NSP SDK programs the EHCI INSNREG01 FIFO threshold to 0x00800040.
This is the same setting already applied by ehci-platform for the
brcm,xgs-iproc-ehci compatible to avoid problems with large transfers.
Apply the existing workaround to the NSP compatible as well.
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
---
drivers/usb/host/ehci-platform.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index f61f095cedab..9b7188d9c288 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -77,7 +77,8 @@ static int ehci_platform_reset(struct usb_hcd *hcd)
if (pdata->no_io_watchdog)
ehci->need_io_watchdog = 0;
- if (of_device_is_compatible(pdev->dev.of_node, "brcm,xgs-iproc-ehci"))
+ if (of_device_is_compatible(pdev->dev.of_node, "brcm,xgs-iproc-ehci") ||
+ of_device_is_compatible(pdev->dev.of_node, "brcm,nsp-ehci"))
ehci_writel(ehci, BCM_USB_FIFO_THRESHOLD,
&ehci->regs->brcm_insnreg[1]);
--
2.53.0
next prev parent reply other threads:[~2026-10-21 17:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-21 17:28 [PATCH 0/9] Fix USB2 and USB3 on NSP SoCs Florian Fainelli
2026-10-21 17:28 ` [PATCH 2/9] dt-bindings: phy: bcm-ns-usb3-phy: Describe the NSP variant Florian Fainelli
2026-10-21 17:28 ` [PATCH 3/9] phy: broadcom: ns-usb3: Coordinate NSP USB2 and USB3 initialization Florian Fainelli
2026-10-21 17:28 ` [PATCH 6/9] dt-bindings: usb: generic-ehci: Add the NSP compatible Florian Fainelli
2026-10-21 17:28 ` Florian Fainelli [this message]
2026-10-21 17:28 ` [PATCH 8/9] ARM: dts: broadcom: Identify the NSP EHCI controller Florian Fainelli
2026-10-21 17:28 ` [PATCH 9/9] ARM: dts: broadcom: Use noncoherent USB DMA on BCM958625HR Florian Fainelli
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