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From: Jerome Brunet <jbrunet@baylibre.com>
To: Neil Armstrong <narmstrong@baylibre.com>,
	ulf.hansson@linaro.org, khilman@baylibre.com
Cc: baylibre-upstreaming@groups.io, linux-mmc@vger.kernel.org,
	linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/3] mmc: meson-gx: add ddr-access-quirk support
Date: Mon, 13 May 2019 13:28:43 +0200	[thread overview]
Message-ID: <10e588ae1e259c2c2bc9cfd0e788aa41735f0f66.camel@baylibre.com> (raw)
In-Reply-To: <24b8cd2eb2879378ca0cac6ddfd9c5cae68699bc.camel@baylibre.com>

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


  reply	other threads:[~2019-05-13 11:28 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-13  9:15 Neil Armstrong
2019-05-13  9:15 ` [PATCH 1/3] dt-bindings: mmc: meson-gx: add ddr-access-quirk property Neil Armstrong
2019-05-14 17:50   ` Martin Blumenstingl
2019-05-15 12:43     ` Neil Armstrong
2019-05-15 11:37   ` Ulf Hansson
2019-05-15 12:43     ` Neil Armstrong
2019-05-13  9:15 ` [PATCH 2/3] mmc: meson-gx: add ddr-access-quirk Neil Armstrong
2019-05-13 17:47   ` Kevin Hilman
2019-05-14 17:58   ` Martin Blumenstingl
2019-05-15 12:45     ` Neil Armstrong
2019-05-15 21:18       ` Martin Blumenstingl
2019-05-16  9:09         ` Neil Armstrong
2019-05-15 11:34   ` Ulf Hansson
2019-05-15 12:51     ` Neil Armstrong
2019-05-13  9:15 ` [PATCH 3/3] arm64: dts: meson-g12a: add ddr-access-quirk property to SDIO controller Neil Armstrong
2019-05-14 17:51   ` Martin Blumenstingl
2019-05-13  9:58 ` [PATCH 0/3] mmc: meson-gx: add ddr-access-quirk support Jerome Brunet
2019-05-13 11:28   ` Jerome Brunet [this message]
2019-05-14  9:14 ` [baylibre-upstreaming] " guillaume La Roque

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