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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
127 lines
2.5 KiB
C
127 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2012
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* Atmel Semiconductor <www.atmel.com>
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* Written-by: Bo Shen <voice.shen@atmel.com>
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*/
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#include <common.h>
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#include <clk.h>
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#include <dm.h>
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#include <log.h>
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#include <malloc.h>
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#include <usb.h>
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#include <asm/io.h>
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#include <asm/arch/clk.h>
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#include "ehci.h"
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#if !CONFIG_IS_ENABLED(DM_USB)
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int ehci_hcd_init(int index, enum usb_init_type init,
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struct ehci_hccr **hccr, struct ehci_hcor **hcor)
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{
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/* Enable UTMI PLL */
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if (at91_upll_clk_enable())
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return -1;
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/* Enable USB Host clock */
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at91_periph_clk_enable(ATMEL_ID_UHPHS);
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*hccr = (struct ehci_hccr *)ATMEL_BASE_EHCI;
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*hcor = (struct ehci_hcor *)((uint32_t)*hccr +
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HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
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return 0;
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}
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int ehci_hcd_stop(int index)
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{
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/* Disable USB Host Clock */
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at91_periph_clk_disable(ATMEL_ID_UHPHS);
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/* Disable UTMI PLL */
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if (at91_upll_clk_disable())
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return -1;
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return 0;
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}
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#else
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struct ehci_atmel_priv {
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struct ehci_ctrl ehci;
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};
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static int ehci_atmel_enable_clk(struct udevice *dev)
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{
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struct clk clk;
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int ret;
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ret = clk_get_by_index(dev, 0, &clk);
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if (ret)
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return ret;
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ret = clk_enable(&clk);
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if (ret)
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return ret;
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ret = clk_get_by_index(dev, 1, &clk);
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if (ret)
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return -EINVAL;
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return clk_enable(&clk);
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}
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static int ehci_atmel_probe(struct udevice *dev)
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{
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struct ehci_hccr *hccr;
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struct ehci_hcor *hcor;
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fdt_addr_t hcd_base;
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int ret;
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ret = ehci_atmel_enable_clk(dev);
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if (ret) {
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debug("Failed to enable USB Host clock\n");
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return ret;
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}
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/*
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* Get the base address for EHCI controller from the device node
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*/
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hcd_base = dev_read_addr(dev);
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if (hcd_base == FDT_ADDR_T_NONE) {
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debug("Can't get the EHCI register base address\n");
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return -ENXIO;
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}
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hccr = (struct ehci_hccr *)hcd_base;
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hcor = (struct ehci_hcor *)
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((u32)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
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debug("echi-atmel: init hccr %x and hcor %x hc_length %d\n",
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(u32)hccr, (u32)hcor,
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(u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
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return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
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}
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static const struct udevice_id ehci_usb_ids[] = {
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{ .compatible = "atmel,at91sam9g45-ehci", },
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{ }
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};
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U_BOOT_DRIVER(ehci_atmel) = {
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.name = "ehci_atmel",
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.id = UCLASS_USB,
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.of_match = ehci_usb_ids,
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.probe = ehci_atmel_probe,
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.remove = ehci_deregister,
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.ops = &ehci_usb_ops,
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.plat_auto = sizeof(struct usb_plat),
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.priv_auto = sizeof(struct ehci_atmel_priv),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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#endif
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