[U-Boot] [linux-sunxi] [PATCH RFC 06/17] sunxi: usb_phy: Add support for A83T USB PHYs

[Hans de Goede <hdegoede@redhat.com>]

Hi,

On 29-03-16 18:26, Chen-Yu Tsai wrote:
> The A83T has 3 USB PHYs: 1 for USB OTG, 1 for standard USB 1.1/2.0 host,
> 1 for USB HSIC.
>
> Signed-off-by: Chen-Yu Tsai <wens@csie.org>

Note, I've made some minor changes to this one to reduce the amount of
#ifdef-s it introduces.

Regards,

Hans



> ---
>   arch/arm/cpu/armv7/sunxi/usb_phy.c | 48 ++++++++++++++++++++++++++++++++++++++
>   include/configs/sun8i.h            |  2 ++
>   2 files changed, 50 insertions(+)
>
> diff --git a/arch/arm/cpu/armv7/sunxi/usb_phy.c b/arch/arm/cpu/armv7/sunxi/usb_phy.c
> index 0749fbd..4ac532a 100644
> --- a/arch/arm/cpu/armv7/sunxi/usb_phy.c
> +++ b/arch/arm/cpu/armv7/sunxi/usb_phy.c
> @@ -34,6 +34,16 @@
>   #define REG_PHY_UNK_H3			0x420
>   #define REG_PMU_UNK_H3			0x810
>
> +/* A83T specific control bits for PHY0 */
> +#define SUNXI_PHY_CTL_VBUSVLDEXT	BIT(5)
> +#define SUNXI_PHY_CTL_SIDDQ		BIT(3)
> +
> +/* A83T HSIC specific bits */
> +#define SUNXI_EHCI_HS_FORCE		BIT(20)
> +#define SUNXI_EHCI_CONNECT_DET		BIT(17)
> +#define SUNXI_EHCI_CONNECT_INT		BIT(16)
> +#define SUNXI_EHCI_HSIC			BIT(1)
> +
>   static struct sunxi_usb_phy {
>   	int usb_rst_mask;
>   	int gpio_vbus;
> @@ -55,6 +65,14 @@ static struct sunxi_usb_phy {
>   		.base = SUNXI_USB1_BASE,
>   	},
>   #if CONFIG_SUNXI_USB_PHYS >= 3
> +#ifdef CONFIG_MACH_SUN8I_A83T
> +	{
> +		.usb_rst_mask = CCM_USB_CTRL_HSIC_RST | CCM_USB_CTRL_HSIC_CLK |
> +				CCM_USB_CTRL_12M_CLK,
> +		.id = 2,
> +		.base = SUNXI_USB2_BASE,
> +	}
> +#else
>   	{
>   		.usb_rst_mask = CCM_USB_CTRL_PHY2_RST | CCM_USB_CTRL_PHY2_CLK,
>   		.id = 2,
> @@ -68,6 +86,7 @@ static struct sunxi_usb_phy {
>   		.base = SUNXI_USB3_BASE,
>   	}
>   #endif
> +#endif
>   };
>
>   static int get_vbus_gpio(int index)
> @@ -97,6 +116,7 @@ static int get_id_detect_gpio(int index)
>   	return -EINVAL;
>   }
>
> +#ifndef CONFIG_MACH_SUN8I_A83T
>   static void usb_phy_write(struct sunxi_usb_phy *phy, int addr,
>   			  int data, int len)
>   {
> @@ -161,6 +181,7 @@ static void sunxi_usb_phy_config(struct sunxi_usb_phy *phy)
>   	return;
>   }
>   #endif
> +#endif
>
>   static void sunxi_usb_phy_passby(struct sunxi_usb_phy *phy, int enable)
>   {
> @@ -174,6 +195,13 @@ static void sunxi_usb_phy_passby(struct sunxi_usb_phy *phy, int enable)
>   		SUNXI_EHCI_AHB_INCRX_ALIGN_EN |
>   		SUNXI_EHCI_ULPI_BYPASS_EN;
>
> +#ifdef CONFIG_MACH_SUN8I_A83T
> +	if (phy->id == 2)
> +		bits |= SUNXI_EHCI_HS_FORCE |
> +			SUNXI_EHCI_CONNECT_INT |
> +			SUNXI_EHCI_HSIC;
> +#endif
> +
>   	if (enable)
>   		setbits_le32(addr, bits);
>   	else
> @@ -184,9 +212,11 @@ static void sunxi_usb_phy_passby(struct sunxi_usb_phy *phy, int enable)
>
>   void sunxi_usb_phy_enable_squelch_detect(int index, int enable)
>   {
> +#ifndef CONFIG_MACH_SUN8I_A83T
>   	struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
>
>   	usb_phy_write(phy, 0x3c, enable ? 0 : 2, 2);
> +#endif
>   }
>
>   void sunxi_usb_phy_init(int index)
> @@ -200,10 +230,21 @@ void sunxi_usb_phy_init(int index)
>
>   	setbits_le32(&ccm->usb_clk_cfg, phy->usb_rst_mask);
>
> +#ifndef CONFIG_MACH_SUN8I_A83T
>   	sunxi_usb_phy_config(phy);
> +#endif
>
>   	if (phy->id != 0)
>   		sunxi_usb_phy_passby(phy, SUNXI_USB_PASSBY_EN);
> +
> +#ifdef CONFIG_MACH_SUN8I_A83T
> +	if (phy->id == 0) {
> +		setbits_le32(SUNXI_USB0_BASE + SUNXI_USB_CSR,
> +			     SUNXI_PHY_CTL_VBUSVLDEXT);
> +		clrbits_le32(SUNXI_USB0_BASE + SUNXI_USB_CSR,
> +			     SUNXI_PHY_CTL_SIDDQ);
> +	}
> +#endif
>   }
>
>   void sunxi_usb_phy_exit(int index)
> @@ -218,6 +259,13 @@ void sunxi_usb_phy_exit(int index)
>   	if (phy->id != 0)
>   		sunxi_usb_phy_passby(phy, !SUNXI_USB_PASSBY_EN);
>
> +#ifdef CONFIG_MACH_SUN8I_A83T
> +	if (phy->id == 0) {
> +		setbits_le32(SUNXI_USB0_BASE + SUNXI_USB_CSR,
> +			     SUNXI_PHY_CTL_SIDDQ);
> +	}
> +#endif
> +
>   	clrbits_le32(&ccm->usb_clk_cfg, phy->usb_rst_mask);
>   }
>
> diff --git a/include/configs/sun8i.h b/include/configs/sun8i.h
> index 7c0ab1e..eb5db4e 100644
> --- a/include/configs/sun8i.h
> +++ b/include/configs/sun8i.h
> @@ -20,6 +20,8 @@
>
>   #ifdef CONFIG_MACH_SUN8I_H3
>   	#define CONFIG_SUNXI_USB_PHYS	4
> +#elif defined CONFIG_MACH_SUN8I_A83T
> +	#define CONFIG_SUNXI_USB_PHYS	3
>   #else
>   	#define CONFIG_SUNXI_USB_PHYS	2
>   #endif
>