linux/arch/arm/mach-rockchip
Heiko Stübner c9b75d51c9 ARM: rockchip: disable jtag/sdmmc autoswitching on rk3288
rk3288 SoCs have a function to automatically switch between jtag/sdmmc pinmux
settings depending on the card state. This collides with a lot of assumptions.

It only works when using the internal card-detect mechanism and breaks
horribly when using either the normal card-detect via the slot-gpio function
or via any other pin. Also there is of course no link between the mmc and jtag
on the software-side, so the jtag clocks may very well be disabled when the
card is ejected and the soc switches back to the jtag pinmux.

Leaving the switching function enabled did result in mmc timeouts and rcu
stalls thus hanging the system on 3.19-rc1. Therefore disable it in all cases,
as we expect the devicetree to explicitly select either mmc or jtag pinmuxes
anyway.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
2015-01-16 19:10:39 -08:00
..
Kconfig ARM: rockchip: enable the AMBA bus 2014-09-02 22:27:26 +02:00
Makefile ARM: rockchip: select ARMv7 compiler flags for platsmp.o 2014-07-23 11:42:26 +02:00
core.h ARM: rockchip: convert smp bringup to CPU_METHOD_OF_DECLARE 2014-05-26 11:15:53 -07:00
headsmp.S ARM: rockchip: add basic smp support for rk3288 2014-11-05 22:18:40 +01:00
platsmp.c ARM: rockchip: add basic smp support for rk3288 2014-11-05 22:18:40 +01:00
rockchip.c ARM: rockchip: disable jtag/sdmmc autoswitching on rk3288 2015-01-16 19:10:39 -08:00