linux-kernel - [PATCH v1 1/2] arm64: dts: ti: k3-am69-aquila: change main

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Message-ID: <20260112175350.79270-2-ivitro@gmail.com>
Date: Mon, 12 Jan 2026 17:53:46 +0000
From: Vitor Soares <ivitro@...il.com>
To: Nishanth Menon <nm@...com>,
	Vignesh Raghavendra <vigneshr@...com>,
	Tero Kristo <kristo@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: Vitor Soares <vitor.soares@...adex.com>,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	ivitro@...il.com,
	stable@...r.kernel.org
Subject: [PATCH v1 1/2] arm64: dts: ti: k3-am69-aquila: change main_spi0/2 CS to GPIO mode

From: Vitor Soares <vitor.soares@...adex.com>

Hardware chip select does not work correctly on main_spi0 and
main_spi2 controllers. Testing shows main_spi2 loses CS state
during runtime PM suspend, while main_spi0 cannot drive CS HIGH
when bus is idle.

Use GPIO-based chip select for both controllers.

Fixes: 39ac6623b1d8 ("arm64: dts: ti: Add Aquila AM69 Support")
Cc: stable@...r.kernel.org
Signed-off-by: Vitor Soares <vitor.soares@...adex.com>
---
 arch/arm64/boot/dts/ti/k3-am69-aquila.dtsi | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am69-aquila.dtsi b/arch/arm64/boot/dts/ti/k3-am69-aquila.dtsi
index 0866eb8a6f34..5119baf62a4c 100644
--- a/arch/arm64/boot/dts/ti/k3-am69-aquila.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am69-aquila.dtsi
@@ -479,7 +479,7 @@ J784S4_IOPAD(0x0dc, PIN_OUTPUT, 0) /* (AM36) SPI0_D1  */ /* AQUILA D17 */
 	/* Aquila SPI_2 CS */
 	pinctrl_main_spi0_cs0: main-spi0-cs0-default-pins {
 		pinctrl-single,pins = <
-			J784S4_IOPAD(0x0cc, PIN_OUTPUT, 0) /* (AM37) SPI0_CS0 */ /* AQUILA D16 */
+			J784S4_IOPAD(0x0cc, PIN_OUTPUT, 7) /* (AM37) SPI0_CS0.GPIO0_51 */ /* AQUILA D16 */
 		>;
 	};
 
@@ -495,7 +495,7 @@ J784S4_IOPAD(0x0ac, PIN_OUTPUT, 10) /* (AE34) MCASP0_AXR15.SPI2_D1  */ /* AQUILA
 	/* Aquila SPI_1 CS */
 	pinctrl_main_spi2_cs0: main-spi2-cs0-default-pins {
 		pinctrl-single,pins = <
-			J784S4_IOPAD(0x09c, PIN_OUTPUT, 10) /* (AF35) MCASP0_AXR11.SPI2_CS1 */ /* AQUILA D9 */
+			J784S4_IOPAD(0x09c, PIN_OUTPUT, 7) /* (AF35) MCASP0_AXR11.GPIO0_39 */ /* AQUILA D9 */
 		>;
 	};
 
@@ -1204,6 +1204,7 @@ &main_sdhci1 {
 &main_spi0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_main_spi0>, <&pinctrl_main_spi0_cs0>;
+	cs-gpios = <&main_gpio0 51 GPIO_ACTIVE_LOW>;
 	status = "disabled";
 };
 
@@ -1211,6 +1212,7 @@ &main_spi0 {
 &main_spi2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_main_spi2>, <&pinctrl_main_spi2_cs0>;
+	cs-gpios = <&main_gpio0 39 GPIO_ACTIVE_LOW>;
 	status = "disabled";
 };
 
-- 
2.52.0