linux-kernel - [PATCH] ARM: dts: stm32: add STM32F746 syscfg clock

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Date:   Wed,  1 Nov 2023 11:51:54 -0400
From:   Ben Wolsieffer <ben.wolsieffer@...ring.com>
To:     linux-stm32@...md-mailman.stormreply.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Ben Wolsieffer <ben.wolsieffer@...ring.com>
Subject: [PATCH] ARM: dts: stm32: add STM32F746 syscfg clock

The syscfg syscon was missing its clock, therefore any attempt to
read/write it after clk_disable_unused() silently failed. This was
preventing external pin interrupts from working if they were initialized
after this point.

Signed-off-by: Ben Wolsieffer <ben.wolsieffer@...ring.com>
---
 arch/arm/boot/dts/st/stm32f746.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/st/stm32f746.dtsi b/arch/arm/boot/dts/st/stm32f746.dtsi
index 4942753d011e..cce6ab0e4617 100644
--- a/arch/arm/boot/dts/st/stm32f746.dtsi
+++ b/arch/arm/boot/dts/st/stm32f746.dtsi
@@ -501,6 +501,7 @@ sdio1: mmc@...12c00 {
 		syscfg: syscon@...13800 {
 			compatible = "st,stm32-syscfg", "syscon";
 			reg = <0x40013800 0x400>;
+			clocks = <&rcc 0 STM32F7_APB2_CLOCK(SYSCFG)>;
 		};
 
 		exti: interrupt-controller@...13c00 {
-- 
2.42.0