Hello Marek,
On Friday, November 17, 2017, Marek Vasut wrote:
> > +#ifdef RZA_USB
> > + dcpctr = r8a66597_read(r8a66597, DCPCTR);
>
> use wait_for_bit() .
>
> > + if ((dcpctr & PID) == PID_BUF) {
> > + timeout2 = 10000;
> > + while (!(dcpctr & BSTS)) {
> > + dcpctr = r8a66597_read(r8a66597, DCPCTR);
> > + if (timeout2-- < 0) {
> > + printf("DCPCTR clear timeout!\n");
> > + break;
> > + }
> > + }
> > + }
> > +#endif
wait_for_bit() wants you to pass a direct address of a 32-bit register.
The register I am waiting for is a 16-bit register and the hardware
manual doesn't say 32-bit is allowed.
When I do a 32-bit read on that address, I actually get a different
value.
For example:
=> md.w E8010060 1
e8010060: 0040
=> md.l E8010060 1
e8010060: 00400000
So, I can't use wait_for_bit()
Chris
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