lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <20230724111751.86422-1-b-kapoor@ti.com>
Date:   Mon, 24 Jul 2023 16:47:51 +0530
From:   Bhavya Kapoor <b-kapoor@...com>
To:     <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     <conor+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <robh+dt@...nel.org>, <kristo@...nel.org>, <vigneshr@...com>,
        <nm@...com>, <u-kumar1@...com>, <b-kapoor@...com>
Subject: [PATCH v5] arm64: dts: ti: k3-j721s2: Add support for CAN instances 3 and 5 in main domain

CAN instances 3 and 5 in the main domain are brought on the common
processor board through header J27 and J28. The CAN High and Low lines
from the SoC are routed through a mux on the SoM. The select lines need
to be set for the CAN signals to get connected to the transceivers on
the common processor board. Threfore, add respective mux, transceiver
dt nodes to add support for these CAN instances.

Reviewed-by: Udit Kumar <u-kumar1@...com>
Signed-off-by: Bhavya Kapoor <b-kapoor@...com>
---

Changelog v4->v5 : Modfied Mux Controller names

Link to v4 : https://lore.kernel.org/all/0070e00a-89c0-9b2b-8753-e1835b5aad15@ti.com/

 .../dts/ti/k3-j721s2-common-proc-board.dts    | 46 +++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi  | 12 +++++
 2 files changed, 58 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
index 04d4739d7245..e715fa12f9ca 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
@@ -29,6 +29,8 @@ aliases {
 		can0 = &main_mcan16;
 		can1 = &mcu_mcan0;
 		can2 = &mcu_mcan1;
+		can3 = &main_mcan3;
+		can4 = &main_mcan5;
 	};
 
 	evm_12v0: fixedregulator-evm12v0 {
@@ -109,6 +111,22 @@ transceiver2: can-phy2 {
 		standby-gpios = <&wkup_gpio0 2 GPIO_ACTIVE_HIGH>;
 	};
 
+	transceiver3: can-phy3 {
+		compatible = "ti,tcan1043";
+		#phy-cells = <0>;
+		max-bitrate = <5000000>;
+		standby-gpios = <&exp2 7 GPIO_ACTIVE_LOW>;
+		enable-gpios = <&exp2 6 GPIO_ACTIVE_HIGH>;
+		mux-states = <&mux0 1>;
+	};
+
+	transceiver4: can-phy4 {
+		compatible = "ti,tcan1042";
+		#phy-cells = <0>;
+		max-bitrate = <5000000>;
+		standby-gpios = <&exp_som 7 GPIO_ACTIVE_HIGH>;
+		mux-states = <&mux1 1>;
+	};
 };
 
 &main_pmx0 {
@@ -152,6 +170,20 @@ main_usbss0_pins_default: main-usbss0-default-pins {
 			J721S2_IOPAD(0x0ec, PIN_OUTPUT, 6) /* (AG25) TIMER_IO1.USB0_DRVVBUS */
 		>;
 	};
+
+	main_mcan3_pins_default: main-mcan3-pins-default {
+		pinctrl-single,pins = <
+			J721S2_IOPAD(0x080, PIN_INPUT, 0) /* (U26) MCASP0_AXR4.MCAN3_RX */
+			J721S2_IOPAD(0x07c, PIN_OUTPUT, 0) /* (T27) MCASP0_AXR3.MCAN3_TX */
+		>;
+	};
+
+	main_mcan5_pins_default: main-mcan5-pins-default {
+		pinctrl-single,pins = <
+			J721S2_IOPAD(0x03c, PIN_INPUT, 0) /* (U27) MCASP0_AFSX.MCAN5_RX */
+			J721S2_IOPAD(0x038, PIN_OUTPUT, 0) /* (AB28) MCASP0_ACLKX.MCAN5_TX */
+		>;
+	};
 };
 
 &wkup_pmx2 {
@@ -460,3 +492,17 @@ adc {
 		ti,adc-channels = <0 1 2 3 4 5 6 7>;
 	};
 };
+
+&main_mcan3 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_mcan3_pins_default>;
+	phys = <&transceiver3>;
+};
+
+&main_mcan5 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_mcan5_pins_default>;
+	phys = <&transceiver4>;
+};
diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
index d57dd43da0ef..594766482071 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
@@ -31,6 +31,18 @@ secure_ddr: optee@...00000 {
 		};
 	};
 
+	mux0: mux-controller {
+		compatible = "gpio-mux";
+		#mux-state-cells = <1>;
+		mux-gpios = <&exp_som 1 GPIO_ACTIVE_HIGH>;
+	};
+
+	mux1: mux-controller {
+		compatible = "gpio-mux";
+		#mux-state-cells = <1>;
+		mux-gpios = <&exp_som 2 GPIO_ACTIVE_HIGH>;
+	};
+
 	transceiver0: can-phy0 {
 		/* standby pin has been grounded by default */
 		compatible = "ti,tcan1042";
-- 
2.34.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ