diff options
| author | Alexander Shiyan <shc_work@mail.ru> | 2016-06-25 08:26:15 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2016-06-28 05:32:53 +0300 |
| commit | 463f90fa8a12bcca4a4a4c686a1d140da816b1bc (patch) | |
| tree | 60f0e52de9156c3c456e513117e2168d3c78080d /arch/arm/mach-imx/mach-imx51.c | |
| parent | 47096103ef03b273db250f7ba0fad001767f0c9d (diff) | |
| download | linux-463f90fa8a12bcca4a4a4c686a1d140da816b1bc.tar.xz | |
ARM: i.MX: Disable supervisor protect for i.MX51
Most peripherals on the i.MX51 have an Off-Platform Peripheral Access
Control Register (OPACR) in which the access rights (together with the
MPROT registers) can be declared.
However, this does not seem to work for example for SSI1+SDMA, because the
supervisor bit is not set for the SDMA unit.
A similar problem was described in the patch for i.MX53 CPU
(ARM: i.MX53: globally disable supervisor protect), and the same solution
is applicable for i.MX51 CPU.
Patch has tested on custom board based on Digi CCMX-51 module (i.MX51).
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/mach-imx/mach-imx51.c')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx51.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx51.c b/arch/arm/mach-imx/mach-imx51.c index 10a82a4f1e58..1e91740ac7ae 100644 --- a/arch/arm/mach-imx/mach-imx51.c +++ b/arch/arm/mach-imx/mach-imx51.c @@ -54,6 +54,8 @@ static void __init imx51_dt_init(void) imx_src_init(); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); + + imx_aips_allow_unprivileged_access("fsl,imx51-aipstz"); } static void __init imx51_init_late(void) |