ARM: dts: renesas: Reinstate R8A779H0 V4M U-Boot DTs

Commit 63da3a795e86 ("ARM: dts: renesas: Drop R8A779H0 V4M DTs with OF_UPSTREAM counterparts")
removed unnecessary V4H DTs from arch/arm/dts , but in the process
also incorrectly dropped the -u-boot.dtsi U-Boot extras. Reinstate
those extras.

Due to DT file name change for the R8A779H0 V4M Gray Hawk, update
the r8a779h0-gray-hawk-u-boot.dtsi filename to newly matching
r8a779h0-gray-hawk-single-u-boot.dtsi .

Align r8a779h0-u-boot.dtsi with clean up commits
1487c34efa7b ("arm64: dts: renesas: Deduplicate extalr_clk bootph-all")
dd8f57ed2f0b ("ARM: dts: renesas: Drop most of bootph-* tags")

Fixes: 63da3a795e86 ("ARM: dts: renesas: Drop R8A779H0 V4M DTs with OF_UPSTREAM counterparts")
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

diff --git a/arch/arm/dts/r8a779h0-gray-hawk-single-u-boot.dtsi b/arch/arm/dts/r8a779h0-gray-hawk-single-u-boot.dtsi
new file mode 100644 (file)
index 0000000..91e1ee1
--- /dev/null
+++ b/arch/arm/dts/r8a779h0-gray-hawk-single-u-boot.dtsi
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source extras for U-Boot for the Gray Hawk board
+ *
+ * Copyright (C) 2025 Renesas Electronics Corp.
+ */
+
+#include "r8a779h0-u-boot.dtsi"
+
+/ {
+       aliases {
+               spi0 = &rpc;
+       };
+};
+
+&pfc {
+       qspi0_pins: qspi0 {
+               groups = "qspi0_ctrl", "qspi0_data4";
+               function = "qspi0";
+       };
+};
+
+&rpc {
+       pinctrl-0 = <&qspi0_pins>;
+       pinctrl-names = "default";
+
+       #address-cells = <1>;
+       #size-cells = <0>;
+       spi-max-frequency = <40000000>;
+       status = "okay";
+
+       flash@0 {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               compatible = "s25fs512s", "jedec,spi-nor";
+               reg = <0>;
+               spi-max-frequency = <40000000>;
+               spi-tx-bus-width = <1>;
+               spi-rx-bus-width = <1>;
+       };
+};

diff --git a/arch/arm/dts/r8a779h0-u-boot.dtsi b/arch/arm/dts/r8a779h0-u-boot.dtsi
new file mode 100644 (file)
index 0000000..40e070b
--- /dev/null
+++ b/arch/arm/dts/r8a779h0-u-boot.dtsi
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source extras for U-Boot on R-Car R8A779H0 SoC
+ *
+ * Copyright (C) 2025 Renesas Electronics Corp.
+ */
+
+&rpc {
+       bank-width = <2>;
+       num-cs = <1>;
+};