From: Clément Le Goffic <clement.legoffic@foss.st.com>
Date: Fri, 11 Jul 2025 07:41:26 +0000 (+0200)
Subject: ARM: dts: stm32: add Hardware debug port (HDP) on stm32mp157c-dk2 board
X-Git-Tag: v6.18-rc1~147^2~18^2~19
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d0647b20d1e19a6d8dc44e57d2d453610c0f29f2;p=thirdparty%2Fkernel%2Fstable.git

ARM: dts: stm32: add Hardware debug port (HDP) on stm32mp157c-dk2 board

On the stm32mp157fc-dk2 board, we can observe the hdp GPOVAL function on
SoC pin E13 accessible on the pin 5 on the Arduino connector CN13.
Add the relevant configuration but keep it disabled as it's used for
debug only.

Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
Link: https://lore.kernel.org/r/20250711-hdp-upstream-v7-8-faeecf7aaee1@foss.st.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
---

diff --git a/arch/arm/boot/dts/st/stm32mp157c-dk2.dts b/arch/arm/boot/dts/st/stm32mp157c-dk2.dts
index 78165c7865e1d..1ec3b8f2faa92 100644
--- a/arch/arm/boot/dts/st/stm32mp157c-dk2.dts
+++ b/arch/arm/boot/dts/st/stm32mp157c-dk2.dts
@@ -62,6 +62,12 @@
 	remote-endpoint = <&panel_in>;
 };
 
+&hdp {
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&hdp2_gpo &hdp2_pins_a>;
+	pinctrl-1 = <&hdp2_sleep_pins_a>;
+};
+
 &i2c1 {
 	touchscreen@38 {
 		compatible = "focaltech,ft6236";