On 11/6/2018 4:50 AM, Chi-Hsien Lin wrote:
From: Naveen Gupta <naveen.gupta@xxxxxxxxxxx> 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.
Nice formula. So could the BurstLength be retrieved from firmware so the driver can determine and update the F2 watermark in brcmf_sdio_bus_preinit().
Reviewed-by: Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>
Signed-off-by: Naveen Gupta <naveen.gupta@xxxxxxxxxxx> Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@xxxxxxxxxxx> --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
