@@ -19,6 +19,7 @@ Exception for clocks:
"cavium,octeon-7130-usb-uctl"
"qcom,dwc3"
"samsung,exynos5250-dwusb3"
+ "samsung,exynos5433-dwusb3"
"samsung,exynos7-dwusb3"
"sprd,sc9860-dwc3"
"st,stih407-dwc3"
@@ -83,6 +83,8 @@ Required properties:
- compatible: should be one of the following -
"samsung,exynos5250-dwusb3": for USB 3.0 DWC3 controller on
Exynos5250/5420.
+ "samsung,exynos5433-dwusb3": for USB 3.0 DWC3 controller on
+ Exynos5433.
"samsung,exynos7-dwusb3": for USB 3.0 DWC3 controller on Exynos7.
- #address-cells, #size-cells : should be '1' if the device has sub-nodes
with 'reg' property.
@@ -162,6 +162,12 @@ static const struct dwc3_exynos_driverdata exynos5250_drvdata = {
.suspend_clk_idx = -1,
};
+static const struct dwc3_exynos_driverdata exynos5433_drvdata = {
+ .clk_names = { "aclk", "susp_clk", "pipe_pclk", "phyclk" },
+ .num_clks = 4,
+ .suspend_clk_idx = 1,
+};
+
static const struct dwc3_exynos_driverdata exynos7_drvdata = {
.clk_names = { "usbdrd30", "usbdrd30_susp_clk", "usbdrd30_axius_clk" },
.num_clks = 3,
@@ -172,6 +178,9 @@ static const struct of_device_id exynos_dwc3_match[] = {
{
.compatible = "samsung,exynos5250-dwusb3",
.data = &exynos5250_drvdata,
+ }, {
+ .compatible = "samsung,exynos5433-dwusb3",
+ .data = &exynos5433_drvdata,
}, {
.compatible = "samsung,exynos7-dwusb3",
.data = &exynos7_drvdata,
DWC3 variant found in Exynos5433 SoCs requires keeping all DRD30/UHOST30 clocks enabled all the time the driver does any access to DWC3 registers, otherwise external abort happens. So far DWC3 hardware module worked with samsung,exynos5250-dwusb3 compatible only by luck when built into kernel: all DRD30 clocks were left enabled by bootloader and later kept enabled by the DRD PHY driver. However, if one tried to use Exnos DWC3 driver as a module or performed system suspend/resume cycle, external abort happened. This patch finally fixes this issue. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> --- Documentation/devicetree/bindings/usb/dwc3.txt | 1 + Documentation/devicetree/bindings/usb/exynos-usb.txt | 2 ++ drivers/usb/dwc3/dwc3-exynos.c | 9 +++++++++ 3 files changed, 12 insertions(+)