From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@arm.linux.org.uk (Russell King - ARM Linux) Date: Mon, 24 Jan 2011 21:22:28 +0000 Subject: [PATCH] ARM: add PrimeCell generic DMA to MMCI/PL180 In-Reply-To: References: <1286358159-6994-1-git-send-email-linus.walleij@stericsson.com> <20101219163240.GA27929@n2100.arm.linux.org.uk> <20101219195959.GA28157@n2100.arm.linux.org.uk> <20101221135421.GS28157@n2100.arm.linux.org.uk> <20101221155935.GV28157@n2100.arm.linux.org.uk> <20110124160127.GA24104@n2100.arm.linux.org.uk> Message-ID: <20110124212228.GN24104@n2100.arm.linux.org.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Jan 24, 2011 at 10:06:53PM +0100, Linus Walleij wrote: > This was an addition from Per Forlin, IIRC the requirement > to not push more than one word at the time into the FIFO > below a certain threadhold is a requirement for the MMCI, > not the DMA engine. The MMCI has four DMA request signals: - BREQ (burst request) - SREQ (single request) - LBREQ (last burst request) - LSREQ (last single request)