At 2013-04-18 14:32:52,"Bo Shen" <voice.s...@atmel.com> wrote: >Hi Alex > >On 4/18/2013 13:27, alex wrote: >> >> At 2013-04-18 09:23:48,"Bo Shen" <voice.s...@atmel.com> wrote: >>>Hi Alex, >>> >>>On 4/17/2013 18:29, alex wrote: >>>> Hi: >>>> I work on one board based on at9g25evk board now. I find one issue >>>> that phy IC isn't reset, so network can't work. Only the different >>>> crystal with evk board is connected to PHY IC. I copy the phy-reset part >>>> of at9260 to at9g25. It can work now. Please the maintainer of at9gx5 >>>> check this. The modification I do is as below: >>> >>>As you mentioned, you use different crystal, please specify this in detail. >> >> S3225A package, 50Mhz crystal oscillator. ocean comonents ltd. ---> can work. >> >> asem series:ASEM1-50.000MHZ-LC-T ---->can't work. More information. asem crystal: only plug the network line, and then powerup, it can work. >> >>> >>>> + >>>> +#ifdef CONFIG_MACB >>>> +int at91sam9x5ek_macb_hw_init(void) >>>> +{ >>>> + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; >>>> + struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA; >>>> + struct at91_rstc *rstc = (struct at91_rstc *)ATMEL_BASE_RSTC; >>>> + unsigned long erstl; >>>> + >>>> + /* Enable EMAC clock */ >>>> + writel(1 << ATMEL_ID_EMAC0, &pmc->pcer); >>>> + >>>> + erstl = readl(&rstc->mr) & AT91_RSTC_MR_ERSTL_MASK; >>>> + >>>> + /* Need to reset PHY -> 500ms reset */ >>>> + writel(AT91_RSTC_KEY | AT91_RSTC_MR_ERSTL(13) | >>>> + AT91_RSTC_MR_URSTEN, &rstc->mr); >>>> + >>>> + writel(AT91_RSTC_KEY | AT91_RSTC_CR_EXTRST, &rstc->cr); >>>> + >>>> + /* Wait for end hardware reset */ >>>> + while (!(readl(&rstc->sr) & AT91_RSTC_SR_NRSTL)) >>>> + ; >>>> + >>>> + /* Restore NRST value */ >>>> + writel(AT91_RSTC_KEY | erstl | AT91_RSTC_MR_URSTEN, >>>> + &rstc->mr); >>>> + >>>> + at91_macb_hw_init(); >>>> +} >>>> +#endif >>> >>>On at91sam9g25ek, it don't need this patch. The network work properly. >>> >>>Btw, please help provide the log information for why not ethernet >>>doesn't work. >> >> From at91sam9g25ek side, no any error. If you only plug network line , the >> network traffic led is always off, that is,DM9161AEP doesn't check this >> change. >> Even if I add this patch, no any defect, right? > >I won't suggest do like this, if you use reset controller, it will >assert nRST pin. If one more device use nRST, it will also reset other >device. if only PHY use nRST and no other consideration, I think it is OK. On my board, only PHY use nRST. Understand, and thanks for your reply. > >Best Regards, >Bo Shen >
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