Am Sun, Feb 21, 2021 at 08:26:23AM -0800 schrieb Ye Li: > Add clock function to setup relevant clocks for USB3.0 controllers and > PHYs on i.MX8MQ > > Signed-off-by: Ye Li <[email protected]>
Reviewed-by: Patrick Wildt <[email protected]> Tested-by: Patrick Wildt <[email protected]> > --- > arch/arm/include/asm/arch-imx8m/clock.h | 1 + > arch/arm/mach-imx/imx8m/clock_imx8mq.c | 22 ++++++++++++++++++++++ > 2 files changed, 23 insertions(+) > > diff --git a/arch/arm/include/asm/arch-imx8m/clock.h > b/arch/arm/include/asm/arch-imx8m/clock.h > index c545eb8..e806552 100644 > --- a/arch/arm/include/asm/arch-imx8m/clock.h > +++ b/arch/arm/include/asm/arch-imx8m/clock.h > @@ -257,6 +257,7 @@ u32 imx_get_uartclk(void); > int clock_init(void); > void init_clk_usdhc(u32 index); > void init_uart_clk(u32 index); > +void init_usb_clk(void); > void init_wdog_clk(void); > unsigned int mxc_get_clock(enum mxc_clock clk); > int clock_enable(enum clk_ccgr_index index, bool enable); > diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mq.c > b/arch/arm/mach-imx/imx8m/clock_imx8mq.c > index 759ec6d..cccd645 100644 > --- a/arch/arm/mach-imx/imx8m/clock_imx8mq.c > +++ b/arch/arm/mach-imx/imx8m/clock_imx8mq.c > @@ -393,6 +393,28 @@ void init_wdog_clk(void) > clock_enable(CCGR_WDOG3, 1); > } > > +void init_usb_clk(void) > +{ > + if (!is_usb_boot()) { > + clock_enable(CCGR_USB_CTRL1, 0); > + clock_enable(CCGR_USB_CTRL2, 0); > + clock_enable(CCGR_USB_PHY1, 0); > + clock_enable(CCGR_USB_PHY2, 0); > + /* 500MHz */ > + clock_set_target_val(USB_BUS_CLK_ROOT, CLK_ROOT_ON | > + CLK_ROOT_SOURCE_SEL(1)); > + /* 100MHz */ > + clock_set_target_val(USB_CORE_REF_CLK_ROOT, CLK_ROOT_ON | > + CLK_ROOT_SOURCE_SEL(1)); > + /* 100MHz */ > + clock_set_target_val(USB_PHY_REF_CLK_ROOT, CLK_ROOT_ON | > + CLK_ROOT_SOURCE_SEL(1)); > + clock_enable(CCGR_USB_CTRL1, 1); > + clock_enable(CCGR_USB_CTRL2, 1); > + clock_enable(CCGR_USB_PHY1, 1); > + clock_enable(CCGR_USB_PHY2, 1); > + } > +} > > void init_nand_clk(void) > { > -- > 2.7.4 >
