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arm64: dts: renesas: r9a09g047e57-smarc: Enable CAN Transceiver

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Enable TCAN1046V-Q1 CAN Transceiver populated on RZ/G3E SMARC EVK by
modelling it as two instances of tcan1042.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20250320164121.193857-4-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Biju Das 2025-03-20 16:41:18 +00:00 committed by Geert Uytterhoeven
parent f2858ea240
commit 99256644c8
2 changed files with 47 additions and 0 deletions
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22
arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
View File

@ -8,6 +8,8 @@
/dts-v1/;
/* Switch selection settings */
#define SW_GPIO8_CAN0_STB 0
#define SW_GPIO9_CAN1_STB 0
#define SW_LCD_EN 0
#define SW_PDM_EN 0
#define SW_SD0_DEV_SEL 0
@ -42,16 +44,36 @@ &canfd {
#if (!SW_PDM_EN)
channel1 {
status = "okay";
#if (!SW_LCD_EN) && (SW_GPIO9_CAN1_STB)
phys = <&can_transceiver1>;
#endif
};
#endif
#if (!SW_LCD_EN)
channel4 {
status = "okay";
#if (SW_GPIO8_CAN0_STB)
phys = <&can_transceiver0>;
#endif
};
#endif
};
#if (!SW_LCD_EN) && (SW_GPIO8_CAN0_STB)
&can_transceiver0 {
standby-gpios = <&pinctrl RZG3E_GPIO(5, 4) GPIO_ACTIVE_HIGH>;
status = "okay";
};
#endif
#if (!SW_LCD_EN) && (SW_GPIO9_CAN1_STB)
&can_transceiver1 {
standby-gpios = <&pinctrl RZG3E_GPIO(5, 5) GPIO_ACTIVE_HIGH>;
status = "okay";
};
#endif
&pinctrl {
canfd_pins: canfd {
can1_pins: can1 {

25
arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
View File

@ -12,6 +12,17 @@
* SW_SDIO_M2E:
* 0 - SMARC SDIO signal is connected to uSD1
* 1 - SMARC SDIO signal is connected to M.2 Key E connector
*
* Please set the switch position SW_GPIO_CAN_PMOD on the carrier board and the
* corresponding macro SW_GPIO8_CAN0_STB/SW_GPIO8_CAN0_STB on the board DTS:
*
* SW_GPIO8_CAN0_STB:
* 0 - Connect to GPIO8 PMOD (default)
* 1 - Connect to CAN0 transceiver STB pin
*
* SW_GPIO9_CAN1_STB:
* 0 - Connect to GPIO9 PMOD (default)
* 1 - Connect to CAN1 transceiver STB pin
*/
/ {
@ -27,6 +38,20 @@ aliases {
serial3 = &scif0;
mmc1 = &sdhi1;
};
can_transceiver0: can-phy0 {
compatible = "ti,tcan1042";
#phy-cells = <0>;
max-bitrate = <8000000>;
status = "disabled";
};
can_transceiver1: can-phy1 {
compatible = "ti,tcan1042";
#phy-cells = <0>;
max-bitrate = <8000000>;
status = "disabled";
};
};
&canfd {