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MLK-19263-1 imx8m: Configure trustzone region 0 for non-secure access 

Set trustzone region 0 to allow both non-secure and secure access when trust zone is enabled.
We found USB controller fails to access DDR if the default region 0 is secure access
only.

Signed-off-by: Ye Li <ye.li@nxp.com>
This commit is contained in:
Ye Li 2018-08-20 23:32:34 -07:00
parent ece4a31cdc
commit ebdf2c75f3
1 changed files with 6 additions and 0 deletions
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6
arch/arm/mach-imx/imx8m/soc.c
View File

@ -64,6 +64,12 @@ void enable_tzc380(void)
#ifdef CONFIG_IMX8MM
setbits_le32(&gpr->gpr[10], GPR_TZASC_SWAP_ID);
#endif
/*
* set Region 0 attribute to allow secure and non-secure read/write permission
* Found some masters like usb dwc3 controllers can't work with secure memory.
*/
writel(0xf0000000, TZASC_BASE_ADDR + 0x108);
}
void set_wdog_reset(struct wdog_regs *wdog)