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Commit 4c954326 authored by Pan Jiafei's avatar Pan Jiafei Committed by Greg Kroah-Hartman
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USB: ehci-fsl: Turn on cache snooping on MPC8xxx 



If a MPC8xxx was being used, 'have_sysif_regs' should be set and
it should setup cache snooping for all the 4GB space on both PPC32
and PPC64.

Signed-off-by: default avatarPan Jiafei <Jiafei.Pan@freescale.com>
Acked-by: default avatarLi Yang <leoli@freescale.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b7a20554

drivers/usb/host/ehci-fsl.c

+11 −14
Original line number Diff line number Diff line
@@ -252,10 +252,7 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) 
	if (pdata->have_sysif_regs) {

		temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);

		out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004);

		out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b);

	}



#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)

		/*

		* Turn on cache snooping hardware, since some PowerPC platforms

		* wholly rely on hardware to deal with cache coherent
@@ -266,7 +263,7 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) 
		out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB);

		/* SNOOP2 starts from 0x80000000, size 2G */

		out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);

#endif

	}



	if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||

			(pdata->operating_mode == FSL_USB2_DR_OTG))