diff options
| author | Ye Li <ye.li@nxp.com> | 2019-08-27 06:25:34 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2019-10-08 16:36:36 +0200 |
| commit | b3cf0a8f03d162e030cde1131751d060853e16fc (patch) | |
| tree | 60756d81299d7deb69c2fd210218062ae3709770 /arch/arm/mach-imx/imx8m | |
| parent | dbb2b7e50899ea6651bdc4c931427e6152493ba2 (diff) | |
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>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'arch/arm/mach-imx/imx8m')
| -rw-r--r-- | arch/arm/mach-imx/imx8m/soc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c index 261f586fc0..a33ca35653 100644 --- a/arch/arm/mach-imx/imx8m/soc.c +++ b/arch/arm/mach-imx/imx8m/soc.c @@ -57,6 +57,12 @@ void enable_tzc380(void) setbits_le32(&gpr->gpr[10], GPR_TZASC_EN_LOCK); if (IS_ENABLED(CONFIG_IMX8MM)) setbits_le32(&gpr->gpr[10], BIT(1)); + /* + * 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) |