From 075b0185b6e785f08391802dccd3293ce8517a93 Mon Sep 17 00:00:00 2001
From: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Date: Tue, 27 Nov 2018 13:49:53 +0100
Subject: pinctrl: stm32: make pinctrl use hwspinlock

Protect configuration registers with a hardware spinlock.

If a hwspinlock is defined in the device-tree node used it
to be sure that none of the others processors on the SoC could
change the configuration at the same time.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
---
 arch/arm/dts/stm32mp157c-ed1.dts | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'arch/arm/dts')

diff --git a/arch/arm/dts/stm32mp157c-ed1.dts b/arch/arm/dts/stm32mp157c-ed1.dts
index fc277dd7d2..7a9b742d36 100644
--- a/arch/arm/dts/stm32mp157c-ed1.dts
+++ b/arch/arm/dts/stm32mp157c-ed1.dts
@@ -369,6 +369,10 @@
 	status = "okay";
 };
 
+&pinctrl {
+	hwlocks = <&hwspinlock 0>;
+};
+
 &usbphyc_port0 {
 	phy-supply = <&vdd_usb>;
 	vdda1v1-supply = <&reg11>;
-- 
cgit