[PATCH v2 5/6] arm: dts: renesas: r8a7740: Add clocks for FSI

[phucduc.bui@gmail.com]

From: bui duc phuc <phucduc.bui@gmail.com>

Add the SPU clock to the FSI node to ensure it is enabled before register
access, preventing potential system hangs.
Also complete the FSI clock tree by adding:
  - CPG DIV6 clocks (icka/b) as functional parents
  - External clocks (xcka/b) from the board
Define fsib nodes to support the clock hierarchy.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---

Changes in v2:
 - Rename "fsi" clock to "own" to match driver implementation.
 - Add missing clock names: "icka", "ickb", "xcka", "xckb".

 arch/arm/boot/dts/renesas/r8a7740.dtsi | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/renesas/r8a7740.dtsi b/arch/arm/boot/dts/renesas/r8a7740.dtsi
index d13ab86c3ab4..b8d903b711be 100644
--- a/arch/arm/boot/dts/renesas/r8a7740.dtsi
+++ b/arch/arm/boot/dts/renesas/r8a7740.dtsi
@@ -393,7 +393,11 @@ sh_fsi2: sound@fe1f0000 {
 		compatible = "renesas,fsi2-r8a7740", "renesas,sh_fsi2";
 		reg = <0xfe1f0000 0x400>;
 		interrupts = <GIC_SPI 9 0x4>;
-		clocks = <&mstp3_clks R8A7740_CLK_FSI>;
+		clocks = <&mstp3_clks R8A7740_CLK_FSI>, <&spu_clk>,
+			<&fsia_clk>, <&fsib_clk>, <&fsiack_clk>,
+			<&fsibck_clk>;
+		clock-names = "own", "spu", "icka", "ickb", "xcka",
+				"xckb";
 		power-domains = <&pd_a4mp>;
 		status = "disabled";
 	};
@@ -614,6 +618,12 @@ vou_clk: vou@e6150088 {
 				 <0>;
 			#clock-cells = <0>;
 		};
+		fsib_clk: fsib@e6150090 {
+			compatible = "renesas,r8a7740-div6-clock", "renesas,cpg-div6-clock";
+			reg = <0xe6150090 4>;
+			clocks = <&pllc1_div2_clk>, <&fsibck_clk>, <0>, <0>;
+			#clock-cells = <0>;
+		};
 		stpro_clk: stpro@e615009c {
 			compatible = "renesas,r8a7740-div6-clock", "renesas,cpg-div6-clock";
 			reg = <0xe615009c 4>;
-- 
2.43.0