From mboxrd@z Thu Jan 1 00:00:00 1970 From: olof@lixom.net (Olof Johansson) Date: Fri, 31 May 2013 23:43:13 -0700 Subject: [PATCH] ARM: bcm2835: override the HW UART periphid In-Reply-To: <1369886859-22114-1-git-send-email-swarren@wwwdotorg.org> References: <1369886859-22114-1-git-send-email-swarren@wwwdotorg.org> Message-ID: <20130601064313.GA9010@quad.lixom.net> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, May 29, 2013 at 10:07:39PM -0600, Stephen Warren wrote: > From: Jongsung Kim > > Stephen Warren reported the recent commit 78506f2 (add support for > extended FIFO-size of PL011-r1p5) breaks the serial port on the > BCM2835 ARM SoC. > > A UART compatible with the ARM PL011-r1p5 should have 32-deep FIFOs. > The BCM2835 UART just looks like an ARM PL011-r1p5, but has 16-deep > FIFOs just like PL011-r1p4 or earlier revisions. As a workaround for > this compatibility issue, this patch overrides the HW UART periphid > register values with the actually compatible UART periphid 0x00241011 > (r1p3 or r1p4). > > Reported-by: Stephen Warren > Signed-off-by: Jongsung Kim > Signed-off-by: Stephen Warren > --- > This is a fix for v3.10-rc*. Applied. -Olof