[PATCH v4] davinci: Support various speedgrades for MityDSP-L138 and MityARM-1808 SoMs
Michael Williamson
michael.williamson at criticallink.com
Tue Jan 4 07:23:42 EST 2011
On 1/4/2011 4:35 AM, Nori, Sekhar wrote:
> On Mon, Jan 03, 2011 at 18:51:45, Michael Williamson wrote:
>> For the MityDSP-L138/MityARM-1808 SoMs, the speed grade can be determined
>> from the part number string read from the factory configuration block on
>> the on-board I2C PROM. Configure the maximum CPU speed based on this
>> information.
>>
>> This patch was tested using a MityDSP-L138 and MityARM-1808 at various
>> speedgrades. Also, for code coverage, a bogus configuration was tested
>> as well as a configuration having an unknown part number.
>
> Thanks for the extensive testing. This looks good to me, except,
> a whitespace nit below. But otherwise:
>
> Reviewed-by: Sekhar Nori <nsekhar at ti.com>
>
>> +#ifdef CONFIG_CPU_FREQ
>> +static void mityomapl138_cpufreq_init(const char *partnum)
>> +{
>> + int i, ret;
>> +
>> + for (i = 0; partnum && i < ARRAY_SIZE(mityomapl138_pn_info); i++) {
>> + /*
>> + * the part number has additional characters beyond what is
>> + * stored in the table. This information is not needed for
>> + * determining the speed grade, and would require several
>> + * more table entries. Only check the first N characters
>> + * for a match.
>> + */
>> + if (!strncmp(partnum, mityomapl138_pn_info[i].part_no,
>> + strlen(mityomapl138_pn_info[i].part_no))) {
>> + da850_max_speed = mityomapl138_pn_info[i].max_freq;
>> + break;
>
> The indentation here makes it look like strlen is part of if()
> body. May be you can indent it substantially to the right. I will
> leave it to your judgment.
>
> Thanks,
> Sekhar
I will align the strlen up to the partnum argument above and resubmit.
Thanks for the review.
-Mike
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