The R-Car V3U does support RPC interface, however the support for it is missing in upstream Linux DTs as of commit 9f4ad9e425a1 ("Linux 5.12"), add the node into u-boot.dtsi to let U-Boot access the SPI NOR or HF.
Signed-off-by: Marek Vasut marek.vasut+renesas@gmail.com --- arch/arm/dts/r8a779a0-u-boot.dtsi | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/arch/arm/dts/r8a779a0-u-boot.dtsi b/arch/arm/dts/r8a779a0-u-boot.dtsi index f6101289e8..83dbe3f20e 100644 --- a/arch/arm/dts/r8a779a0-u-boot.dtsi +++ b/arch/arm/dts/r8a779a0-u-boot.dtsi @@ -7,6 +7,19 @@
#include "r8a779x-u-boot.dtsi"
+/ { + soc { + rpc: spi@ee200000 { + compatible = "renesas,rpc-r8a779a0", "renesas,rcar-gen3-rpc"; + reg = <0 0xee200000 0 0x200>, <0 0x08000000 0 0x04000000>; + clocks = <&cpg CPG_MOD 629>; + bank-width = <2>; + num-cs = <1>; + status = "disabled"; + }; + }; +}; + &extalr_clk { u-boot,dm-pre-reloc; };