3d42d3690b
Some USB devices cause the USB stack to get stuck with a stall error. This adds a patch which recovers from this situation. This avoids an U-Boot crash when Arduino Mega R3 devices are connected, which cause an USB stall when trying to read the product string.
50 lines
1.8 KiB
Diff
50 lines
1.8 KiB
Diff
From 72619dd5d0be59e702fd7b7090916ee688c34180 Mon Sep 17 00:00:00 2001
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Message-Id: <72619dd5d0be59e702fd7b7090916ee688c34180.1632740631.git.stefan@agner.ch>
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In-Reply-To: <9cb97076d98f7f68534abb3d1f596644ae730841.1632740631.git.stefan@agner.ch>
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References: <9cb97076d98f7f68534abb3d1f596644ae730841.1632740631.git.stefan@agner.ch>
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From: Marek Szyprowski <m.szyprowski@samsung.com>
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Date: Thu, 17 Jun 2021 11:22:03 +0200
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Subject: [PATCH 3/5] ARM: bcm283x: change the virtual address of the XHCI PCI
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device base
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Move the XHCI PCI device base up in the virtual address space. This fixes
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initialization failure observed with newer Raspberry Pi firmware, later
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than 63b1922311 ("firmware: arm_loader: Update armstubs with those from
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PR 117). It looks that chosing 0xff800000 as the XHCI PCI device base
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conflicts with the updated ARM/VideoCore firmware.
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This also requires to reduce the size of the mapped PCI device region
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from 8MiB to 4MiB to fit into 32bit address space. This is still enough
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for the XHCI PCI device.
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Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
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---
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arch/arm/mach-bcm283x/init.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/arch/arm/mach-bcm283x/init.c b/arch/arm/mach-bcm283x/init.c
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index 49027ce0a2..9803499985 100644
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--- a/arch/arm/mach-bcm283x/init.c
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+++ b/arch/arm/mach-bcm283x/init.c
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@@ -14,7 +14,7 @@
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#include <asm/global_data.h>
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#define BCM2711_RPI4_PCIE_XHCI_MMIO_PHYS 0x600000000UL
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-#define BCM2711_RPI4_PCIE_XHCI_MMIO_SIZE 0x800000UL
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+#define BCM2711_RPI4_PCIE_XHCI_MMIO_SIZE 0x400000UL
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#ifdef CONFIG_ARM64
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#include <asm/armv8/mmu.h>
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@@ -148,7 +148,7 @@ int mach_cpu_init(void)
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#ifdef CONFIG_ARMV7_LPAE
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#ifdef CONFIG_TARGET_RPI_4_32B
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-#define BCM2711_RPI4_PCIE_XHCI_MMIO_VIRT 0xff800000UL
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+#define BCM2711_RPI4_PCIE_XHCI_MMIO_VIRT 0xffc00000UL
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#include <addr_map.h>
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#include <asm/system.h>
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--
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2.33.0
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