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| author | Jongsung Kim <neidhard.kim@lge.com> | 2013-05-30 06:07:39 +0200 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2013-06-02 20:50:41 +0200 |
| commit | 13731d862cf5219216533a3b0de052cee4cc5038 (patch) | |
| tree | 9717cd08378c708b4c03af3206bdc9e6ffa32ae8 | |
| parent | Merge tag 'fixes-3.10-3' of git://git.infradead.org/users/jcooper/linux into ... (diff) | |
| download | linux-13731d862cf5219216533a3b0de052cee4cc5038.tar.xz linux-13731d862cf5219216533a3b0de052cee4cc5038.zip | |
ARM: bcm2835: override the HW UART periphid
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 <swarren@wwwdotorg.org>
Signed-off-by: Jongsung Kim <neidhard.kim@lge.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
| -rw-r--r-- | arch/arm/boot/dts/bcm2835.dtsi | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi index f0052dccf9a8..1e12aeff403b 100644 --- a/arch/arm/boot/dts/bcm2835.dtsi +++ b/arch/arm/boot/dts/bcm2835.dtsi @@ -44,6 +44,7 @@ reg = <0x7e201000 0x1000>; interrupts = <2 25>; clock-frequency = <3000000>; + arm,primecell-periphid = <0x00241011>; }; gpio: gpio { |