[U-Boot] [PATCH 4/6] mips: ath79: Add support for ungating USB and ethernet on qca953x

[Marek Vasut]

On 05/30/2016 04:54 PM, Wills Wang wrote:
> Add code to ungate USB and ethernet controller on qca953x

Is this code coming from mainline Linux ?

> Signed-off-by: Wills Wang <wills.wang at live.com>
> ---
> 
>  arch/mips/mach-ath79/reset.c | 50 ++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 50 insertions(+)
> 
> diff --git a/arch/mips/mach-ath79/reset.c b/arch/mips/mach-ath79/reset.c
> index 33bf979..a5ee141 100644
> --- a/arch/mips/mach-ath79/reset.c
> +++ b/arch/mips/mach-ath79/reset.c
> @@ -136,6 +136,23 @@ static int eth_init_ar934x(void)
>  	return 0;
>  }
>  
> +static int eth_init_qca953x(void)
> +{
> +	void __iomem *rregs = map_physmem(AR71XX_RESET_BASE, AR71XX_RESET_SIZE,
> +					  MAP_NOCACHE);
> +	const u32 mask = QCA953X_RESET_GE0_MAC | QCA953X_RESET_GE0_MDIO |
> +			 QCA953X_RESET_GE1_MAC | QCA953X_RESET_GE1_MDIO |
> +			 QCA953X_RESET_ETH_SWITCH_ANALOG |
> +			 QCA953X_RESET_ETH_SWITCH;
> +
> +	setbits_be32(rregs + AR934X_RESET_REG_RESET_MODULE, mask);
> +	mdelay(1);
> +	clrbits_be32(rregs + AR934X_RESET_REG_RESET_MODULE, mask);
> +	mdelay(1);
> +
> +	return 0;
> +}
> +
>  int ath79_eth_reset(void)
>  {
>  	/*
> @@ -146,6 +163,8 @@ int ath79_eth_reset(void)
>  		return eth_init_ar933x();
>  	if (soc_is_ar934x())
>  		return eth_init_ar934x();
> +	if (soc_is_qca953x())
> +		return eth_init_qca953x();
>  
>  	return -EINVAL;
>  }
> @@ -185,6 +204,35 @@ static int usb_reset_ar934x(void __iomem *reset_regs)
>  	return 0;
>  }
>  
> +static int usb_reset_qca953x(void __iomem *reset_regs)
> +{
> +	void __iomem *pregs = map_physmem(AR71XX_PLL_BASE, AR71XX_PLL_SIZE,
> +					  MAP_NOCACHE);
> +
> +	clrsetbits_be32(pregs + QCA953X_PLL_SWITCH_CLOCK_CONTROL_REG,
> +			0xf00, 0x200);
> +	mdelay(10);
> +
> +	/* Ungate the USB block */
> +	setbits_be32(reset_regs + QCA953X_RESET_REG_RESET_MODULE,
> +		     QCA953X_RESET_USBSUS_OVERRIDE);
> +	mdelay(1);
> +	clrbits_be32(reset_regs + QCA953X_RESET_REG_RESET_MODULE,
> +		     QCA953X_RESET_USB_PHY);
> +	mdelay(1);
> +	clrbits_be32(reset_regs + QCA953X_RESET_REG_RESET_MODULE,
> +		     QCA953X_RESET_USB_PHY_ANALOG);
> +	mdelay(1);
> +	clrbits_be32(reset_regs + QCA953X_RESET_REG_RESET_MODULE,
> +		     QCA953X_RESET_USB_HOST);
> +	mdelay(1);
> +	clrbits_be32(reset_regs + QCA953X_RESET_REG_RESET_MODULE,
> +		     QCA953X_RESET_USB_PHY_PLL_PWD_EXT);
> +	mdelay(1);
> +
> +	return 0;
> +}
> +
>  int ath79_usb_reset(void)
>  {
>  	void __iomem *usbc_regs = map_physmem(AR71XX_USB_CTRL_BASE,
> @@ -204,6 +252,8 @@ int ath79_usb_reset(void)
>  		return usb_reset_ar933x(reset_regs);
>  	if (soc_is_ar934x())
>  		return usb_reset_ar934x(reset_regs);
> +	if (soc_is_qca953x())
> +		return usb_reset_qca953x(reset_regs);
>  
>  	return -EINVAL;
>  }
> 


-- 
Best regards,
Marek Vasut