From 6176a4e56b16fa28a914b72fa163929135463f8c Mon Sep 17 00:00:00 2001 From: Bryan O'Donoghue Date: Mon, 16 Jul 2018 18:21:19 +0100 Subject: [PATCH] imx: imx_clock: usb: Add USB clock API This set of patches adds a very minimal layer of USB enabling patches to clock.c. Unlike the watchdog or UART blocks the USB clocks pertain to PHYs, the main USB clock etc, not to different instances of the same IP block. As a result this patch-set takes the clock CCGR clock identifier directly rather than as an index of an instance of blocks of the same type. Signed-off-by: Bryan O'Donoghue --- plat/imx/common/imx_clock.c | 18 ++++++++++++++++++ plat/imx/common/include/imx_clock.h | 3 +++ 2 files changed, 21 insertions(+) diff --git a/plat/imx/common/imx_clock.c b/plat/imx/common/imx_clock.c index 09cd101b3..ccf2aeb13 100644 --- a/plat/imx/common/imx_clock.c +++ b/plat/imx/common/imx_clock.c @@ -132,3 +132,21 @@ void imx_clock_set_wdog_clk_root_bits(uint32_t wdog_clk_root_en_bits) /* Enable the common clock root just once */ imx_clock_target_set(CCM_TRT_ID_WDOG_CLK_ROOT, wdog_clk_root_en_bits); } + +void imx_clock_enable_usb(unsigned int ccm_ccgr_usb_id) +{ + /* Enable the clock gate */ + imx_clock_gate_enable(ccm_ccgr_usb_id, true); +} + +void imx_clock_disable_usb(unsigned int ccm_ccgr_usb_id) +{ + /* Disable the clock gate */ + imx_clock_gate_enable(ccm_ccgr_usb_id, false); +} + +void imx_clock_set_usb_clk_root_bits(uint32_t usb_clk_root_en_bits) +{ + /* Enable the common clock root just once */ + imx_clock_target_set(CCM_TRT_ID_USB_HSIC_CLK_ROOT, usb_clk_root_en_bits); +} diff --git a/plat/imx/common/include/imx_clock.h b/plat/imx/common/include/imx_clock.h index 27858bbda..85586380f 100644 --- a/plat/imx/common/include/imx_clock.h +++ b/plat/imx/common/include/imx_clock.h @@ -995,5 +995,8 @@ void imx_clock_enable_usdhc(unsigned int usdhc_id, uint32_t usdhc_clk_en_bits); void imx_clock_set_wdog_clk_root_bits(uint32_t wdog_clk_root_en_bits); void imx_clock_enable_wdog(unsigned int wdog_id); void imx_clock_disable_wdog(unsigned int wdog_id); +void imx_clock_enable_usb(unsigned int usb_id); +void imx_clock_disable_usb(unsigned int usb_id); +void imx_clock_set_usb_clk_root_bits(uint32_t usb_clk_root_en_bits); #endif /* __IMX_CLOCK_H__ */