[PATCH 01/10] ARM: dts: sti: Add fixed clock for ehci and ohci nodes in stih410-b2260.dtsi

[Patrice Chotard]

On STi platforms, all clocks are enabled by BOOTROM, so CONFIG_CLK is
not set as no clock driver for STI exists.

As ehci-generic and ohci-generic drivers are used on platforms where
CONFIG_CLK is set, clk_get_bulk() returns-ENOSYS in case of
stih410-b2260.
To avoid this error, add fixed clocks for ehci and ohci nodes for
stih410-b2260 to fix the following errors:

Bus usb at 9a03c00: ohci_generic usb at 9a03c00: Failed to get clocks (ret=-19)
Port not available.
Bus usb at 9a03e00: ehci_generic usb at 9a03e00: Failed to get clocks (ret=-19)
Port not available.
Bus usb at 9a83c00: ohci_generic usb at 9a83c00: Failed to get clocks (ret=-19)
Port not available.
Bus usb at 9a83e00: ehci_generic usb at 9a83e00: Failed to get clocks (ret=-19)
Port not available.
scanning bus dwc3 at 9900000 for devices... 1 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found

Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
Cc: Marek Vasut <marex at denx.de>
---

 arch/arm/dts/stih410-b2260-u-boot.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/dts/stih410-b2260-u-boot.dtsi b/arch/arm/dts/stih410-b2260-u-boot.dtsi
index 3b080ac7a1b..e9d7ec92281 100644
--- a/arch/arm/dts/stih410-b2260-u-boot.dtsi
+++ b/arch/arm/dts/stih410-b2260-u-boot.dtsi
@@ -14,20 +14,30 @@
 			};
 		};
 
+		clk_usb: clk-usb {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <100000000>;
+		};
+
 		ohci0: usb at 9a03c00 {
 			compatible = "generic-ohci";
+			clocks = <&clk_usb>;
 		};
 
 		ehci0: usb at 9a03e00 {
 			compatible = "generic-ehci";
+			clocks = <&clk_usb>;
 		};
 
 		ohci1: usb at 9a83c00 {
 			compatible = "generic-ohci";
+			clocks = <&clk_usb>;
 		};
 
 		ehci1: usb at 9a83e00 {
 			compatible = "generic-ehci";
+			clocks = <&clk_usb>;
 		};
 	};
 };
-- 
2.25.1