[PATCH 2/3] arm: dts: renesas: r8a7740-armadillo800eva: Add spu clock to FSI

phucduc.bui
2026-04-03T11:27:40Z

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

The FSI on r8a7740 requires the SPU clock to be enabled
before accessing its registers.
Without this clock, register access may lead to a system
hang.
Describe the "spu" clock in the FSI node.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
arch/arm/boot/dts/renesas/r8a7740.dtsi | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/renesas/r8a7740.dtsi b/arch/arm/boot/dts/renesas/r8a7740.dtsi
index d13ab86c3ab4..9cae87a1979c 100644
--- a/arch/arm/boot/dts/renesas/r8a7740.dtsi
+++ b/arch/arm/boot/dts/renesas/r8a7740.dtsi
@@ -393,7 +393,8 @@ 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>;
+ clock-names = "fsi", "spu";
power-domains = <&pd_a4mp>;
status = "disabled";
};
--
2.43.0