Changeset 0f2c80a in mainline


Ignore:
Timestamp:
2012-11-22T12:54:38Z (11 years ago)
Author:
Jan Vesely <jano.vesely@…>
Branches:
lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
Children:
0ab362c
Parents:
c739102
Message:

rootamdm37x: Fix DPLL5 initialization.

Divisor was out of allowed range.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • uspace/drv/infrastructure/rootamdm37x/amdm37x.c

    rc739102 r0f2c80a  
    271271                /* Compute divisors and multiplier
    272272                 * See AMDM37x TRM p. 300 for the formula */
    273                 assert((base_freq % 100) == 0);
    274                 const unsigned mult = 1200;
    275                 const unsigned div = (base_freq / 100) - 1;
     273                // TODO: base_freq does not have to be rounded to Mhz
     274                // (that's why I used KHz as unit).
     275                const unsigned mult = 120;
     276                const unsigned div = (base_freq / 1000) - 1;
    276277                const unsigned div2 = 1;
     278                if ( ((base_freq % 1000) != 0) || (div > 127)) {
     279                        ddf_msg(LVL_ERROR, "Rounding error, or divisor to big "
     280                            "freq: %d, div: %d", base_freq, div);
     281                        return;
     282                };
     283                assert(div <= 127);
    277284
    278285                /* Set multiplier */
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