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| author | Kongyang Liu <seashell11234455@gmail.com> | 2025-01-10 21:55:22 +0800 |
|---|---|---|
| committer | Mattijs Korpershoek <mkorpershoek@kernel.org> | 2025-06-02 09:57:25 +0200 |
| commit | bd6ef5097dd6c6219f12c0f2866ee4d578f190e9 (patch) | |
| tree | b31d81880ae35bc6617857b02bcab749f7377f02 /arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c | |
| parent | 94a1f8fe47e26250dd5704b2c2187622522eca6b (diff) | |
usb: dwc2: Fix HBstLen setting for external DMA mode
The loop used to calculate HBstLen for extern DMA mode does not produce
the correct result according to the datasheet [1]. Replacing that loop
with a direct calculation using LOG2 to correctly assign the burst length
in the GAHBCFG register for external DMA mode.
[1] https://rockchip.fr/RK312X%20TRM/chapter-26-usb-otg-2-0.pdf#page=24
Signed-off-by: Kongyang Liu <seashell11234455@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Signed-off-by: Junhui Liu <junhui.liu@pigmoral.tech>
Link: https://lore.kernel.org/r/20250110-dwc2-dev-v4-3-987f4fd6f8b2@pigmoral.tech
Signed-off-by: Mattijs Korpershoek <mkorpershoek@kernel.org>
Diffstat (limited to 'arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c')
0 files changed, 0 insertions, 0 deletions