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Breno Lima committed 1e8dbf30996
MLK-22755 mx7ulp: wdog: Wait for WDOG unlock and reconfiguration to complete According to i.MX7ULP Reference Manual we should wait for WDOG unlock and reconfiguration to complete. Section "59.5.3 Configure Watchdog" provides the following example: DisableInterrupts; //disable global interrupt WDOG_CNT = 0xD928C520; //unlock watchdog while(WDOG_CS[ULK]==0); //wait until registers are unlocked WDOG_TOVAL = 256; //set timeout value WDOG_CS = WDOG_CS_EN(1) | WDOG_CS_CLK(1) | WDOG_CS_INT(1) | WDOG_CS_WIN(0) | WDOG_CS_UPDATE(1); while(WDOG_CS[RCS]==0); //wait until new configuration takes effect EnableInterrupts; //enable global interrupt Update U-Boot WDOG driver to align with i.MX7ULP reference manual. Reviewed-by: Ye Li <ye.li@nxp.com> Signed-off-by: Breno Lima <breno.lima@nxp.com> (cherry picked from commit 3ffee301cb4570e0e7681448ec434f0689bcbaa3)