Re: [U-Boot] phy ic isn't reset

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.

+#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.

Best Regards, Bo Shen

Best Regards, Alex