From: <leilk.liu@mediatek.com>
To: Mark Rutland <mark.rutland@arm.com>,
Mark Brown <broonie@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Leilk Liu <leilk.liu@mediatek.com>,
Eddie Huang <eddie.huang@mediatek.com>,
Hongzhou Yang <hongzhou.yang@mediatek.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-spi@vger.kernel.org>, <linux-mediatek@lists.infradead.org>,
<srv_heupstream@mediatek.com>,
Sascha Hauer <kernel@pengutronix.de>
Subject: Add Mediatek SPI driver
Date: Fri, 8 May 2015 16:55:40 +0800 [thread overview]
Message-ID: <1431075343-7887-1-git-send-email-leilk.liu@mediatek.com> (raw)
Mediatek SPI BUS controller has 3 hardware restrictions:
1. Hw has the restriction that in one transfer, length must be a multiple of
1024, when it's greater than 1024bytes.
2. Hw tx/rx have 4bytes aligned restriction.
3. For MT8173 IC: RX must enable TX, then TX transfer dummy data; TX don't need
to enable RX.
Some workarounds are done in SPI driver code base on v4.1-rc1.
next reply other threads:[~2015-05-08 8:56 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-08 8:55 leilk.liu [this message]
2015-05-08 8:55 ` [PATCH 1/3] dt-bindings: ARM: Mediatek: Document devicetree bindings for spi bus leilk.liu
2015-05-08 8:55 ` [PATCH 2/3] spi: mediatek: Add spi bus for Mediatek MT8173 leilk.liu
2015-05-08 17:53 ` Mark Brown
2015-05-12 12:39 ` leilk liu
2015-05-12 16:05 ` Mark Brown
2015-05-13 9:26 ` Yingjoe Chen
2015-05-13 11:10 ` Mark Brown
2015-05-13 13:58 ` Yingjoe Chen
2015-05-15 7:38 ` leilk liu
2015-05-15 9:25 ` Mark Brown
2015-06-08 10:15 ` Eddie Huang
2015-06-08 17:59 ` Mark Brown
2015-06-09 10:05 ` Eddie Huang
2015-06-09 10:39 ` Mark Brown
2015-06-10 8:06 ` Eddie Huang
2015-06-17 9:08 ` Eddie Huang
2015-06-17 12:47 ` Mark Brown
2015-06-17 14:10 ` Eddie Huang
2015-06-17 16:35 ` Mark Brown
2015-06-18 8:11 ` Eddie Huang
2015-05-08 8:55 ` [PATCH 3/3] arm64: dts: Add spi bus dts leilk.liu
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