[PATCHv3 4/5] usb: dwc3: exynos: Add support for Exynos5422 suspend clk
From: Anand Moon <hidden>
Date: 2020-03-10 19:49:48
Also in:
linux-arm-kernel, linux-clk, linux-samsung-soc, linux-usb, lkml
Subsystem:
designware usb3 drd ip driver, the rest, usb subsystem · Maintainers:
Thinh Nguyen, Linus Torvalds, Greg Kroah-Hartman
Exynos5422 DWC3 module support two clk USBD300 and SCLK_USBD300 so add missing code to enable/disable code and suspend clk, for this add a new compatible samsung,exynos5420-dwusb3 to help configure dwc3 code and dwc3 suspend clock. Suspend clock controls the PHY power change from P0 to P1/P2/P3 during U0 to U1/U2/U3 transition. Signed-off-by: Anand Moon <redacted> --- drivers/usb/dwc3/dwc3-exynos.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index 90bb022737da..48b68b6f0dc8 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c@@ -162,6 +162,12 @@ static const struct dwc3_exynos_driverdata exynos5250_drvdata = { .suspend_clk_idx = -1, }; +static const struct dwc3_exynos_driverdata exynos5420_drvdata = { + .clk_names = { "usbdrd30", "usbdrd30_susp_clk"}, + .num_clks = 2, + .suspend_clk_idx = 1, +}; + static const struct dwc3_exynos_driverdata exynos5433_drvdata = { .clk_names = { "aclk", "susp_clk", "pipe_pclk", "phyclk" }, .num_clks = 4,
@@ -178,6 +184,9 @@ static const struct of_device_id exynos_dwc3_match[] = { { .compatible = "samsung,exynos5250-dwusb3", .data = &exynos5250_drvdata, + }, { + .compatible = "samsung,exynos5420-dwusb3", + .data = &exynos5420_drvdata, }, { .compatible = "samsung,exynos5433-dwusb3", .data = &exynos5433_drvdata,
--
2.25.1