upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
1.8 KiB
81 lines
1.8 KiB
/*
|
|
* (C) Copyright 2012
|
|
* Atmel Semiconductor <www.atmel.com>
|
|
* Written-by: Bo Shen <voice.shen@atmel.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <watchdog.h>
|
|
#include <usb.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/hardware.h>
|
|
#include <asm/arch/at91_pmc.h>
|
|
#include <asm/arch/clk.h>
|
|
|
|
#include "ehci.h"
|
|
|
|
/* Enable UTMI PLL time out 500us
|
|
* 10 times as datasheet specified
|
|
*/
|
|
#define EN_UPLL_TIMEOUT 500UL
|
|
|
|
int ehci_hcd_init(int index, enum usb_init_type init,
|
|
struct ehci_hccr **hccr, struct ehci_hcor **hcor)
|
|
{
|
|
at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
|
|
ulong start_time, tmp_time;
|
|
|
|
start_time = get_timer(0);
|
|
/* Enable UTMI PLL */
|
|
writel(AT91_PMC_UPLLEN | AT91_PMC_BIASEN, &pmc->uckr);
|
|
while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU) {
|
|
WATCHDOG_RESET();
|
|
tmp_time = get_timer(0);
|
|
if ((tmp_time - start_time) > EN_UPLL_TIMEOUT) {
|
|
printf("ERROR: failed to enable UPLL\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/* 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 +
|
|
HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ehci_hcd_stop(int index)
|
|
{
|
|
at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
|
|
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 */
|
|
writel(readl(&pmc->uckr) & ~AT91_PMC_UPLLEN, &pmc->uckr);
|
|
while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU) {
|
|
WATCHDOG_RESET();
|
|
tmp_time = get_timer(0);
|
|
if ((tmp_time - start_time) > EN_UPLL_TIMEOUT) {
|
|
printf("ERROR: failed to stop UPLL\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|