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arm64: dts: renesas: Add R8A779G0 V4H DBSC5 and RT-VRAM DT nodes

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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>
This commit is contained in:
Marek Vasut
2024-12-12 14:34:31 +01:00
parent 7366aacf8e
commit 94255316db
1 changed files with 18 additions and 0 deletions
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18
arch/arm/dts/r8a779g0-u-boot.dtsi
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@@ -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;
};
};