arm64: dts: renesas: Add R8A779G0 V4H DBSC5 and RT-VRAM DT nodes
Describe DBSC5 DRAM controller and RT-VRAM configuration interface
as two new DT nodes in R-Car Gen4 R8A779G0 U-Boot DT extras file.
This node is used by the U-Boot SPL for R8A779G0 SoC, where the
DBSC5 and RT-VRAM drivers bind to these nodes and bring up the
DRAM controller and RT-VRAM settings respectively, so U-Boot
proper can be loaded into DRAM and started on Cortex A76 core.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/arch/arm/dts/r8a779g0-u-boot.dtsi b/arch/arm/dts/r8a779g0-u-boot.dtsi
index f60eba5..42df321 100644
--- a/arch/arm/dts/r8a779g0-u-boot.dtsi
+++ b/arch/arm/dts/r8a779g0-u-boot.dtsi
@@ -15,3 +15,21 @@
&extalr_clk {
bootph-all;
};
+
+&soc {
+ ram@e6780000 { /* DBSC5 */
+ compatible = "renesas,r8a779g0-dbsc";
+ reg = <0 0xe6780000 0 0x80000>;
+ power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+ status = "okay";
+ bootph-all;
+ };
+
+ ram@ffec0000 { /* RT-VRAM */
+ compatible = "renesas,r8a779g0-rtvram";
+ reg = <0 0xffec0000 0 0xf000>;
+ power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+ status = "okay";
+ bootph-all;
+ };
+};