From: Alexander Shiyan Date: Sat, 25 Jun 2016 05:26:15 +0000 (+0300) Subject: ARM: i.MX: Disable supervisor protect for i.MX51 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=463f90fa8a12bcca4a4a4c686a1d140da816b1bc;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git 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 Signed-off-by: Shawn Guo --- 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)