> From: Eduardo Valentin <eduardo.valentin@xxxxxxxxx>
>
> This patch fix the OTG autoidle workaround so now
> usb gadget modules can be properly loaded.
>
> Besides it also adds a cpu check, because this hardware
> but is present only in OMAP34xx chips.
>
> Signed-off-by: Eduardo Valentin <eduardo.valentin@xxxxxxxxx>
> ---
> arch/arm/mach-omap2/pm34xx.c | 3 ++-
> arch/arm/mach-omap2/usb-musb.c | 9 ++++++++-
> 2 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
> index c301261..db75975 100644
> --- a/arch/arm/mach-omap2/pm34xx.c
> +++ b/arch/arm/mach-omap2/pm34xx.c
> @@ -505,7 +505,8 @@ void omap_sram_idle(void)
> * Errata 1.164 fix : OTG autoidle can prevent
> * sleep
> */
> - usb_musb_disable_autoidle();
> + if (cpu_is_omap34xx())
If you're doing this, could you please make it cpu_is_omap3430() only?
3630 is not affected. But cpu_is_omap34xx() will return true on 3630
as well.
- Anand
> + usb_musb_disable_autoidle();
> }
> omap_uart_resume_idle(0);
> omap_uart_resume_idle(1);
> diff --git a/arch/arm/mach-omap2/usb-musb.c b/arch/arm/mach-omap2/usb-musb.c
> index bb3cee4..cbd4e45 100644
> --- a/arch/arm/mach-omap2/usb-musb.c
> +++ b/arch/arm/mach-omap2/usb-musb.c
> @@ -81,7 +81,14 @@ static void __init usb_musb_pm_init(void)
>
> void usb_musb_disable_autoidle(void)
> {
> - __raw_writel(0, otg_base + OTG_SYSCONFIG);
> + if (otg_clk) {
> + unsigned long reg;
> +
> + clk_enable(otg_clk);
> + reg = __raw_readl(otg_base + OTG_SYSCONFIG);
> + __raw_writel(reg & ~1, otg_base + OTG_SYSCONFIG);
> + clk_disable(otg_clk);
> + }
> }
>
> #ifdef CONFIG_USB_MUSB_SOC
> --
> 1.6.5.7.g9ecb2
>
> --
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