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 ye.li@nxp.com
Reviewed-by: Patrick Wildt patrick@blueri.se Tested-by: Patrick Wildt patrick@blueri.se
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