usb: ehci: Add Aspeed AST2700 support

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Unlike earlier Aspeed SoCs (AST2400/2500/2600) which are limited to
32-bit DMA addressing, the EHCI controller in AST2700 supports 64-bit
DMA. Update the EHCI platform driver to make use of this capability by
selecting a 64-bit DMA mask when the "aspeed,ast2700-ehci" compatible
is present in device tree.

Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20250928032407.27764-3-ryan_chen@aspeedtech.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Ryan Chen 2025-09-28 11:24:07 +08:00 • committed by Greg Kroah-Hartman

parent f39e7cdd8e

commit 274f2232a9

1 changed files with 13 additions and 2 deletions

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drivers/usb/host/ehci-platform.c

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