Re: TWL4030 intermittent freakout on boot

Paul Walmsley
2008-05-08T18:33:16Z

On Thu, 8 May 2008, Tony Lindgren wrote:

> This also looks similar to the earlier twl4030 hangs where access
> to some domains caused twl4030 to hang. If twl4030 hangs, there's
> no way to reset it as all control is over I2C. When twl4030 hangs,
> bootloader won't be able to detect the chip either unless devices
> is power cycled (and USB cable detached).
>
> The reason earlier was that twl4030 internal clock was not being
> programmed properly, and was fixed by patch
> 0d81cf7e804c529c58d3054c1b9bdb7b3f1dec5d.
>
> Maybe there's some twl4030 register access going on before the
> internal clock is programmed properly?

IRQ 56 is the TWL4030 I2C1 IRQ. Seems strange that there would be no
handler for it after i2c_omap has initialized...

- Paul