linux-kernel - [PATCH] arm64: dts: imx95-19x19-evk: correct the phy setting for flexcan1/2

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Message-Id: <20250819-can-dts-fix-v1-1-e43e7d98a544@nxp.com>
Date: Tue, 19 Aug 2025 10:43:37 +0800
From: Haibo Chen <haibo.chen@....com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Peng Fan <peng.fan@....com>, 
 Frank Li <Frank.Li@....com>
Cc: devicetree@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Haibo Chen <haibo.chen@....com>
Subject: [PATCH] arm64: dts: imx95-19x19-evk: correct the phy setting for
 flexcan1/2

1, the phy support up to 8Mbit/s databitrate for CAN FD.
   refer to product data sheet:
     https://www.nxp.com/docs/en/data-sheet/TJA1463.pdf
2, the standby pin of the phy is ACTIVE_LOW.
3, the phy of flexcan2 connect the standby/en pin to PCAL6408 on i2c4 bus.

Fixes: 02b7adb791e1 ("arm64: dts: imx95-19x19-evk: add adc0 flexcan[1,2] i2c[2,3] uart5 spi3 and tpm3")
Signed-off-by: Haibo Chen <haibo.chen@....com>
---
 arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
index 2f949a0d48d2d8066388884703c3b3cd678f16e1..9d034275c847606919af8ee4a80a00599abf4d8b 100644
--- a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
@@ -80,17 +80,17 @@ linux_cma: linux,cma {
 	flexcan1_phy: can-phy0 {
 		compatible = "nxp,tjr1443";
 		#phy-cells = <0>;
-		max-bitrate = <1000000>;
+		max-bitrate = <8000000>;
 		enable-gpios = <&i2c6_pcal6416 6 GPIO_ACTIVE_HIGH>;
-		standby-gpios = <&i2c6_pcal6416 5 GPIO_ACTIVE_HIGH>;
+		standby-gpios = <&i2c6_pcal6416 5 GPIO_ACTIVE_LOW>;
 	};
 
 	flexcan2_phy: can-phy1 {
 		compatible = "nxp,tjr1443";
 		#phy-cells = <0>;
-		max-bitrate = <1000000>;
-		enable-gpios = <&i2c6_pcal6416 4 GPIO_ACTIVE_HIGH>;
-		standby-gpios = <&i2c6_pcal6416 3 GPIO_ACTIVE_HIGH>;
+		max-bitrate = <8000000>;
+		enable-gpios = <&i2c4_gpio_expander_21 4 GPIO_ACTIVE_HIGH>;
+		standby-gpios = <&i2c4_gpio_expander_21 3 GPIO_ACTIVE_LOW>;
 	};
 
 	reg_vref_1v8: regulator-1p8v {

---
base-commit: 3ac864c2d9bb8608ee236e89bf561811613abfce
change-id: 20250819-can-dts-fix-62ac1d02c007

Best regards,
-- 
Haibo Chen <haibo.chen@....com>