ARM: shmobile: r8a7779: setup EHCI internal buffer
Setup the EHCI internal buffer (before EHCI driver has a chance to touch the registers) using the pre_setup() method in 'struct usb_ehci_pdata'. The patch has been tested on the Marzen board. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
parent
743fcce0a8
commit
84a812da09
|
@ -33,6 +33,7 @@
|
|||
#include <linux/sh_timer.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <linux/usb/otg.h>
|
||||
#include <linux/usb/hcd.h>
|
||||
#include <linux/usb/ehci_pdriver.h>
|
||||
#include <linux/usb/ohci_pdriver.h>
|
||||
#include <linux/pm_runtime.h>
|
||||
|
@ -435,10 +436,25 @@ static void usb_power_off(struct platform_device *pdev)
|
|||
pm_runtime_disable(&pdev->dev);
|
||||
}
|
||||
|
||||
static int ehci_init_internal_buffer(struct usb_hcd *hcd)
|
||||
{
|
||||
/*
|
||||
* Below are recommended values from the datasheet;
|
||||
* see [USB :: Setting of EHCI Internal Buffer].
|
||||
*/
|
||||
/* EHCI IP internal buffer setting */
|
||||
iowrite32(0x00ff0040, hcd->regs + 0x0094);
|
||||
/* EHCI IP internal buffer enable */
|
||||
iowrite32(0x00000001, hcd->regs + 0x009C);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct usb_ehci_pdata ehcix_pdata = {
|
||||
.power_on = usb_power_on,
|
||||
.power_off = usb_power_off,
|
||||
.power_suspend = usb_power_off,
|
||||
.pre_setup = ehci_init_internal_buffer,
|
||||
};
|
||||
|
||||
static struct resource ehci0_resources[] = {
|
||||
|
|
Loading…
Reference in a new issue