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USB: ehci-atmel: use pcr to enable or disable clock

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If the SoC has pcr, we use pcr (peripheral control register)
to enable or disable clock.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
This commit is contained in:
Bo Shen 2014-08-06 17:24:57 +08:00 committed by Andreas Bießmann
parent 01c8bf5a6f
commit 97b2043da6
1 changed files with 8 additions and 0 deletions
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8
drivers/usb/host/ehci-atmel.c
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@ -40,7 +40,11 @@ int ehci_hcd_init(int index, enum usb_init_type init,
}
/* Enable USB Host clock */
#ifdef CPU_HAS_PCR
at91_periph_clk_enable(ATMEL_ID_UHPHS);
#else
writel(1 << ATMEL_ID_UHPHS, &pmc->pcer);
#endif
*hccr = (struct ehci_hccr *)ATMEL_BASE_EHCI;
*hcor = (struct ehci_hcor *)((uint32_t)*hccr +
@ -55,7 +59,11 @@ int ehci_hcd_stop(int index)
ulong start_time, tmp_time;
/* Disable USB Host Clock */
#ifdef CPU_HAS_PCR
at91_periph_clk_disable(ATMEL_ID_UHPHS);
#else
writel(1 << ATMEL_ID_UHPHS, &pmc->pcdr);
#endif
start_time = get_timer(0);
/* Disable UTMI PLL */