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Message-ID: <52C5E727.4060603@hauke-m.de>
Date: Thu, 02 Jan 2014 23:24:39 +0100
From: Hauke Mehrtens <hauke@...ke-m.de>
To: Rafał Miłecki <zajec5@...il.com>
CC: David Miller <davem@...emloft.net>,
Network Development <netdev@...r.kernel.org>
Subject: Re: [PATCH 3/5] bgmac: add support for new BGMAC_CMDCFG_SR position
on core rev >= 4
On 01/02/2014 09:28 PM, Rafał Miłecki wrote:
> 2014/1/2 Hauke Mehrtens <hauke@...ke-m.de>:
>> The BGMAC_CMDCFG_SR register is at a different position on core rev >= 4
>> -#define BGMAC_CMDCFG_SR 0x00000800 /* Set to reset mode */
>> +#define BGMAC_CMDCFG_SR_REVO 0x00000800 /* Set to reset mode, for other revs */
>> +#define BGMAC_CMDCFG_SR_REV4 0x00002000 /* Set to reset mode, only for core rev 4 */
>> +#define BGMAC_CMDCFG_SR(rev) ((rev >= 4) ? BGMAC_CMDCFG_SR_REV4 : BGMAC_CMDCFG_SR_REVO)
>
> If you use _REV4 for rev 4+, then what about using _REV0 for rev 0+?
>
> I guess REVO stands for OTHERS, but others doesn't actually mean rev != 4 here.
>
> Unless it was supposed to be 0 from the beginning and it's just a typo?
>
> In future you may need to use _REV7 or whatever number.
>
This should be REV0, 0 and O are just so similar.
I will also change this from rev >= 4 to rev == 4, as the Broadcom
driver does the same.
Hauke
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