[coreboot] [PATCH] disabling microcode update

[Rudolf Marek]

The 500MHz and 300MHz are valid HT frequencies

Table 59. Link Frequency Bit Field Encoding
         [FreqExt, Link Frequency]     Transmitter Clock Frequency
                 Encoding                        (MHz)
                   0_0000                     200 (default)
                   0_0001                          300
                   0_0010                          400
                   0_0011                          500
                   0_0100                          600
                   0_0101                          800
                   0_0110                          1000
                   0_0111                         1200*
                   0_1000                         1400*
                   0_1001                         1600*
                   0_1010                          1800
                   0_1011                          2000
                   0_1100                          2200
                   0_1101                          2400
                   0_1110                          2600
                   0_1111                    Vendor-Specific
              1_0000                                      Reserved
              1_0001                                        2800
              1_0010                                        3000
              1_0011                                        3200
       1_0100 to 1_1111                                   Reserved
* These frequencies were defined in revision 2.00 of the specification but are
        redefined electrically in revision 3.00. The presence of a Gen3 
capability       block indicates that a device implements the Gen3 electrical 
behavior for
        these frequencies. Gen1 and Gen3 devices are not interoperable at these
        frequencies.

Check  http://www.hypertransport.org/docs/twgdocs/HTC20051222-0046-0035.pdf

For details

Thanks,
Rudolf