Re: [PATCH 0/3] mmc: meson-gx: add ddr-access-quirk support

From: Jerome Brunet
Date: Mon May 13 2019 - 07:30:19 EST

On Mon, 2019-05-13 at 11:58 +0200, Jerome Brunet wrote:
> > The performance hit hasn't been evaluated, but the fix has been tested
> > using a WiFi AP6398S SDIO module, and the iperf3 Bandwidth measurement gave
> > 55.2 Mbits/sec over a 63 Hours long test, with the SDIO ios set as High-Speed
> > at 50MHz clock. It gave around 170 Mbits/sec as SDR104 and 200MHz clock.
> These numbers looks to be limited by the MMC bandwidth of the related modes.
> So, if the SRAM quirk introduce a penalty for the controller, it does not appear
> to be a limiting factor, AFAICT.

Got confused. This comment is completely wrong, please ignore