The 9FGV0441 PCIe clock generator can operate in autonomous mode, which
is the default mode. U-Boot currently does not have a driver for this
PCIe clock generator, but Linux 6.17 DT does describe the clock generator
in Sparrow Hawk board DT and this DT is included in U-Boot since commit
eea470fd7f6a ("Subtree merge tag 'v6.17-dts' of dts repo [1] into
dts/upstream").
Reinstate basic PCIe clock description which matches the behavior of
Linux DT before Linux 6.17.y release in in U-Boot DT extras to allow
PCIe to be used on Sparrow Hawk board in U-Boot until the 9FGV0441
driver gets implemented or ported from Linux.
Signed-off-by: Marek Vasut <[email protected]>
---
Cc: Tom Rini <[email protected]>
---
arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
b/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
index dff0355150d..968cf6684c5 100644
--- a/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
+++ b/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
@@ -49,6 +49,24 @@
status = "okay";
};
+&pcie0_clkref {
+ clock-frequency = <100000000>;
+ status = "okay";
+};
+
+&pciec0 {
+ clocks = <&cpg CPG_MOD 624>, <&pcie0_clkref>;
+};
+
+&pcie1_clkref {
+ clock-frequency = <100000000>;
+ status = "okay";
+};
+
+&pciec1 {
+ clocks = <&cpg CPG_MOD 625>, <&pcie1_clkref>;
+};
+
&rpc {
flash@0 {
/*
--
2.51.0
