Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 84a812da authored by Sergei Shtylyov's avatar Sergei Shtylyov Committed by Simon Horman
Browse files

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: default avatarSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarSimon Horman <horms+renesas@verge.net.au>
parent 743fcce0

arch/arm/mach-shmobile/setup-r8a7779.c

+16 −0
Original line number Diff line number Diff line
@@ -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[] = {