brcmfmac: update 43012 F2 watermark setting to fix DMA Error during UDP RX Traffic

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The number of words that the read FIFO has to contain except
the end of frame before sends data back to the host.
Max watermark = (512B - 2* (BurstLength))/4 =
(512 - 128)/4 = 384/4 = 0x60
so if burst length (i.e. BurstLength = 64) is increased,
watermark has to be reduced. This is the optimal setting for this chip.

Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Naveen Gupta <naveen.gupta@cypress.com>
Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

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Naveen Gupta 2018-11-21 07:53:49 +00:00 • committed by Kalle Valo

parent b021a6bc11

commit f95a8d9c6a

1 changed files with 12 additions and 0 deletions

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drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c

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