[PATCH 1/5] arm64: dts: st: Add st,io-sync into eth2_rgmii_pins_b

Marek Vasut marex at nabladev.com
Tue Sep 29 12:39:55 PDT 2026


Add st,io-sync into eth2_rgmii_pins_b to configure the RGMII data pins
for DDR operation. This pinmux is used on DH electronics STM32MP23xx
and STM32MP25xx DHCOS DHSBC.

Fixes: e2fce4620933 ("arm64: dts: st: Add pinmux nodes for DH electronics STM32MP23xx/STM32MP25xx DHCOS SoM and Breakout Board")
Signed-off-by: Marek Vasut <marex at nabladev.com>
---
Cc: Alexandre Torgue <alexandre.torgue at foss.st.com>
Cc: Bartosz Golaszewski <brgl at kernel.org>
Cc: Conor Dooley <conor+dt at kernel.org>
Cc: Krzysztof Kozlowski <krzk+dt at kernel.org>
Cc: Linus Walleij <linusw at kernel.org>
Cc: Rob Herring <robh at kernel.org>
Cc: devicetree at vger.kernel.org
Cc: kernel at dh-electronics.com
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-gpio at vger.kernel.org
Cc: linux-kernel at vger.kernel.org
Cc: linux-stm32 at st-md-mailman.stormreply.com
---
 arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
index 757cdd2415394..75f516b8d6af7 100644
--- a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
@@ -240,6 +240,7 @@ pins1 {
 			bias-disable;
 			drive-push-pull;
 			slew-rate = <3>;
+			st,io-sync = "data on both edges";
 		};
 		pins2 {
 			pinmux = <STM32_PINMUX('F', 8, AF10)>, /* ETH_RGMII_CLK125 */
@@ -255,6 +256,7 @@ pins3 {
 				 <STM32_PINMUX('C', 11, AF10)>, /* ETH_RGMII_RXD3 */
 				 <STM32_PINMUX('C', 3, AF10)>; /* ETH_RGMII_RX_CTL */
 			bias-disable;
+			st,io-sync = "data on both edges";
 		};
 		pins4 {
 			pinmux = <STM32_PINMUX('F', 6, AF10)>; /* ETH_RGMII_RX_CLK */
-- 
2.53.0




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