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器件型号：AM625 主题中讨论的其他器件：SK-AM62、 ADC128S052、 TCA6424
我使用的是 SK-AM62 评估板。 我正在尝试在 J3连接器上使用 SPI2。 另外、我尝试将 LCD 与评估板一起使用。 我连接了一个 SPI 模块- ADC128S052。 为了启动 SPI2和 LCD、我已经对 K3-am625-sk.dts 文件进行了更改：-
// SPDX-License-Identifier: GPL-2.0 /* * AM625 SK: www.ti.com/.../sprr448 * * Copyright (C) 2021-2022 Texas Instruments Incorporated - https://www.ti.com/ */ /dts-v1/; #include <dt-bindings/leds/common.h> #include <dt-bindings/gpio/gpio.h> #include <dt-bindings/net/ti-dp83867.h> #include <dt-bindings/pinctrl/k3.h> #include <dt-bindings/interrupt-controller/irq.h> #include "k3-am625.dtsi" #include "k3-am62x-sk-common.dtsi" //#include "k3-am62x-lp-sk-oldi-panel.dts" / { compatible = "ti,am625-sk", "ti,am625"; model = "Platform-AM625-SK-13mar2023"; transceiver1: can-phy0 { compatible = "ti,tcan1042"; #phy-cells = <0>; max-bitrate = <5000000>; }; display { compatible = "microtips,13-101hieb0hf0-s"; /* * Note that the OLDI TX 0 transmits the odd set of pixels * while the OLDI TX 1 transmits the even set. This is a * fixed configuration in the IP integration and is not * changeable. The properties, "dual-lvds-odd-pixels" and * "dual-lvds-even-pixels" have been used to merely * identify if a Dual Link configuration is required. * Swapping them will not make any difference. */ port@0 { dual-lvds-odd-pixels; lcd_in0: endpoint { remote-endpoint = <&oldi_out0>; }; }; port@1 { dual-lvds-even-pixels; lcd_in1: endpoint { remote-endpoint = <&oldi_out1>; }; }; }; wlan_lten: regulator-5 { compatible = "regulator-fixed"; regulator-name = "wlan_lten"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; regulator-always-on; vin-supply = <&vcc_3v3_sys>; gpios = <&exp1 11 GPIO_ACTIVE_LOW>; }; wlan_en: regulator-6 { /* OUTPUT of SN74AVC2T244DQMR */ compatible = "regulator-fixed"; regulator-name = "wlan_en"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; enable-active-high; vin-supply = <&wlan_lten>; gpios = <&main_gpio0 71 GPIO_ACTIVE_HIGH>; pinctrl-names = "default"; pinctrl-0 = <&wlan_en_pins_default>; }; }; &main_pmx0 { wlan_en_pins_default: wlan-en-pins-default { pinctrl-single,pins = < AM62X_IOPAD(0x124, PIN_OUTPUT, 7) /* (A23) MMC2_SDCD.GPIO0_71 */ >; }; main_mmc2_pins_default: main-mmc2-pins-default { pinctrl-single,pins = < AM62X_IOPAD(0x120, PIN_INPUT, 0) /* (C24) MMC2_CMD */ AM62X_IOPAD(0x118, PIN_INPUT, 0) /* (D25) MMC2_CLK */ AM62X_IOPAD(0x114, PIN_INPUT, 0) /* (B24) MMC2_DAT0 */ AM62X_IOPAD(0x110, PIN_INPUT, 0) /* (C25) MMC2_DAT1 */ AM62X_IOPAD(0x10c, PIN_INPUT, 0) /* (E23) MMC2_DAT2 */ AM62X_IOPAD(0x108, PIN_INPUT, 0) /* (D24) MMC2_DAT3 */ AM62X_IOPAD(0x11c, PIN_INPUT, 0) /* (#N/A) MMC2_CLKB */ >; }; main_wlirq_pins_default: main-wlirq-pins-default { pinctrl-single,pins = < AM62X_IOPAD(0x128, PIN_INPUT, 7) /* (B23) MMC2_SDWP.GPIO0_72 */ >; }; main_spi2_pins_default: main-spi2-pins-default { pinctrl-single,pins = < AM62X_IOPAD(0x1B0, PIN_INPUT, 1) /* (A20) SPI2_CLK pins on expansion Header*/ AM62X_IOPAD(0x1AC, PIN_OUTPUT, 1) /* (E19) SPI2_CS0 pins on expansion Header */ AM62X_IOPAD(0x194, PIN_INPUT, 1) /* (B19) SPI2_D0 pins on expansion Header */ AM62X_IOPAD(0x198, PIN_INPUT, 1) /* (A19) SPI2_D1 pins on expansion Header */ >; }; main_mcan0_pins_default: main-mcan0-pins-default { pinctrl-single,pins = < AM62X_IOPAD(0x1dc, PIN_INPUT, 0) /* (E15) MCAN0_RX */ AM62X_IOPAD(0x1d8, PIN_OUTPUT, 0) /* (C15) MCAN0_TX */ >; }; main_oldi0_pins_default: main-oldi0-pins-default { pinctrl-single,pins = < AM62X_IOPAD(0x0260, PIN_OUTPUT, 0) /* (AA5) OLDI0_A0N */ AM62X_IOPAD(0x025c, PIN_OUTPUT, 0) /* (Y6) OLDI0_A0P */ AM62X_IOPAD(0x0268, PIN_OUTPUT, 0) /* (AD3) OLDI0_A1N */ AM62X_IOPAD(0x0264, PIN_OUTPUT, 0) /* (AB4) OLDI0_A1P */ AM62X_IOPAD(0x0270, PIN_OUTPUT, 0) /* (Y8) OLDI0_A2N */ AM62X_IOPAD(0x026c, PIN_OUTPUT, 0) /* (AA8) OLDI0_A2P */ AM62X_IOPAD(0x0278, PIN_OUTPUT, 0) /* (AB6) OLDI0_A3N */ AM62X_IOPAD(0x0274, PIN_OUTPUT, 0) /* (AA7) OLDI0_A3P */ AM62X_IOPAD(0x0280, PIN_OUTPUT, 0) /* (AC6) OLDI0_A4N */ AM62X_IOPAD(0x027c, PIN_OUTPUT, 0) /* (AC5) OLDI0_A4P */ AM62X_IOPAD(0x0288, PIN_OUTPUT, 0) /* (AE5) OLDI0_A5N */ AM62X_IOPAD(0x0284, PIN_OUTPUT, 0) /* (AD6) OLDI0_A5P */ AM62X_IOPAD(0x0290, PIN_OUTPUT, 0) /* (AE6) OLDI0_A6N */ AM62X_IOPAD(0x028c, PIN_OUTPUT, 0) /* (AD7) OLDI0_A6P */ AM62X_IOPAD(0x0298, PIN_OUTPUT, 0) /* (AD8) OLDI0_A7N */ AM62X_IOPAD(0x0294, PIN_OUTPUT, 0) /* (AE7) OLDI0_A7P */ AM62X_IOPAD(0x02a0, PIN_OUTPUT, 0) /* (AD4) OLDI0_CLK0N */ AM62X_IOPAD(0x029c, PIN_OUTPUT, 0) /* (AE3) OLDI0_CLK0P */ AM62X_IOPAD(0x02a8, PIN_OUTPUT, 0) /* (AE4) OLDI0_CLK1N */ AM62X_IOPAD(0x02a4, PIN_OUTPUT, 0) /* (AD5) OLDI0_CLK1P */ >; }; }; &main_mcan0 { status = "okay"; pinctrl-names = "default"; pinctrl-0 = <&main_mcan0_pins_default>; phys = <&transceiver1>; }; &mcu_pmx0 { /* MPU_I2C0_SCL -> MPU_I2C3_RTC_SCL & MPU_I2C0_SDA -> MPU_I2C3_RTC_SDA */ /* These pins are pulled high on hardware */ mcu_i2c0_pins_default: mcu_i2c0-pins-default { pinctrl-single,pins = < AM62X_MCU_IOPAD(0x0044, PIN_INPUT, 0) /* (A8) MCU_I2C0_SCL */ AM62X_MCU_IOPAD(0x0048, PIN_INPUT, 0) /* (D10) MCU_I2C0_SDA */ >; }; }; &mcu_i2c0 { status = "okay"; pinctrl-names = "default"; pinctrl-0 = <&mcu_i2c0_pins_default>; clock-frequency = <400000>; bq32000: rtc@68 { compatible = "ti,bq32000"; //trickle-resistor-ohms = <1120>; reg = <0x68>; }; }; /************************************************************************************/ &dss { pinctrl-names = "default"; pinctrl-0 = <&main_oldi0_pins_default &main_dss0_pins_default>; }; &dss_ports { #address-cells = <1>; #size-cells = <0>; /* VP1: LVDS Output (OLDI TX 0) */ port@0 { reg = <0>; oldi_out0: endpoint { remote-endpoint = <&lcd_in0>; }; }; /* VP1: LVDS Output (OLDI TX 1) */ port@2 { reg = <2>; oldi_out1: endpoint { remote-endpoint = <&lcd_in1>; }; }; }; &main_i2c1 { exp1: gpio@22 { compatible = "ti,tca6424"; reg = <0x22>; gpio-controller; #gpio-cells = <2>; gpio-line-names = "GPIO_CPSW2_RST", "GPIO_CPSW1_RST", "PRU_DETECT", "MMC1_SD_EN", "VPP_LDO_EN", "EXP_PS_3V3_En", "EXP_PS_5V0_En", "EXP_HAT_DETECT", "GPIO_AUD_RSTn", "GPIO_eMMC_RSTn", "UART1_FET_BUF_EN", "WL_LT_EN", "GPIO_HDMI_RSTn", "CSI_GPIO1", "CSI_GPIO2", "PRU_3V3_EN", "HDMI_INTn", "TEST_GPIO2", "MCASP1_FET_EN", "MCASP1_BUF_BT_EN", "MCASP1_FET_SEL", "UART1_FET_SEL", "TSINT#", "IO_EXP_TEST_LED"; interrupt-parent = <&main_gpio1>; interrupts = <23 IRQ_TYPE_EDGE_FALLING>; interrupt-controller; #interrupt-cells = <2>; pinctrl-names = "default"; pinctrl-0 = <&main_gpio1_ioexp_intr_pins_default>; }; }; &sdhci2 { vmmc-supply = <&wlan_en>; pinctrl-names = "default"; pinctrl-0 = <&main_mmc2_pins_default>; bus-width = <4>; non-removable; ti,fails-without-test-cd; cap-power-off-card; keep-power-in-suspend; ti,driver-strength-ohm = <50>; assigned-clocks = <&k3_clks 157 158>; assigned-clock-parents = <&k3_clks 157 160>; #address-cells = <1>; #size-cells = <0>; wlcore: wlcore@2 { compatible = "ti,wl1837"; reg = <2>; pinctrl-names = "default"; pinctrl-0 = <&main_wlirq_pins_default>; interrupt-parent = <&main_gpio0>; interrupts = <72 IRQ_TYPE_EDGE_FALLING>; }; }; &ospi0 { flash@0 { compatible = "jedec,spi-nor"; reg = <0x0>; spi-tx-bus-width = <8>; spi-rx-bus-width = <8>; spi-max-frequency = <25000000>; cdns,tshsl-ns = <60>; cdns,tsd2d-ns = <60>; cdns,tchsh-ns = <60>; cdns,tslch-ns = <60>; cdns,read-delay = <4>; cdns,phy-mode; partitions { compatible = "fixed-partitions"; #address-cells = <1>; #size-cells = <1>; partition@0 { label = "ospi.tiboot3"; reg = <0x0 0x80000>; }; partition@80000 { label = "ospi.tispl"; reg = <0x80000 0x200000>; }; partition@280000 { label = "ospi.u-boot"; reg = <0x280000 0x400000>; }; partition@680000 { label = "ospi.env"; reg = <0x680000 0x40000>; }; partition@6c0000 { label = "ospi.env.backup"; reg = <0x6c0000 0x40000>; }; partition@800000 { label = "ospi.rootfs"; reg = <0x800000 0x37c0000>; }; partition@3fc0000 { label = "ospi.phypattern"; reg = <0x3fc0000 0x40000>; }; }; }; }; &main_spi2{ pinctrl-names = "default"; pinctrl-0 = <&main_spi2_pins_default>; status = "okay"; adc@0 { compatible = "ti,adc128s052"; reg = <0>; spi-max-frequency = <1000000>; #io-channel-cells = <1>; }; }; /* &main_i2c0 { #address-cells = <1>; #size-cells = <0>; touchscreen@41 { compatible = "ilitek,ili251x"; reg = <0x41>; interrupt-parent = <&exp1>; interrupts = <15 IRQ_TYPE_EDGE_FALLING>; reset-gpios = <&exp2 18 GPIO_ACTIVE_LOW>; }; }; */
添加我的更改后、我观察到在"/sys/class/i2c-adapter/i2c-1 /"中不存在与 TCA6424相关的文件(因为此 IC 控制板上 J3连接器上的 SPI2)。
此外、 /dev/中 没有与 SPI 相关的文件。
我从'k3-am625-sk'中删除了与 LCD 相关的更改,现在我可以在 /sys/class/i2c-adapter/i2c-1中看到文件'1-0022',但在/dev 中没有与 SPI 相关的文件。 下面是我的不带 LCD 更改的 DTS 文件：-
// SPDX-License-Identifier: GPL-2.0 /* * AM625 SK: www.ti.com/.../sprr448 * * Copyright (C) 2021-2022 Texas Instruments Incorporated - https://www.ti.com/ */ /dts-v1/; #include <dt-bindings/leds/common.h> #include <dt-bindings/gpio/gpio.h> #include <dt-bindings/net/ti-dp83867.h> #include <dt-bindings/pinctrl/k3.h> #include <dt-bindings/interrupt-controller/irq.h> #include "k3-am625.dtsi" #include "k3-am62x-sk-common.dtsi" / { compatible = "ti,am625-sk", "ti,am625"; model = "Platform-AM625-SK-13mar2023"; transceiver1: can-phy0 { compatible = "ti,tcan1042"; #phy-cells = <0>; max-bitrate = <5000000>; }; wlan_lten: regulator-5 { compatible = "regulator-fixed"; regulator-name = "wlan_lten"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; regulator-always-on; vin-supply = <&vcc_3v3_sys>; gpios = <&exp1 11 GPIO_ACTIVE_LOW>; }; wlan_en: regulator-6 { /* OUTPUT of SN74AVC2T244DQMR */ compatible = "regulator-fixed"; regulator-name = "wlan_en"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; enable-active-high; vin-supply = <&wlan_lten>; gpios = <&main_gpio0 71 GPIO_ACTIVE_HIGH>; pinctrl-names = "default"; pinctrl-0 = <&wlan_en_pins_default>; }; }; &main_pmx0 { wlan_en_pins_default: wlan-en-pins-default { pinctrl-single,pins = < AM62X_IOPAD(0x124, PIN_OUTPUT, 7) /* (A23) MMC2_SDCD.GPIO0_71 */ >; }; main_mmc2_pins_default: main-mmc2-pins-default { pinctrl-single,pins = < AM62X_IOPAD(0x120, PIN_INPUT, 0) /* (C24) MMC2_CMD */ AM62X_IOPAD(0x118, PIN_INPUT, 0) /* (D25) MMC2_CLK */ AM62X_IOPAD(0x114, PIN_INPUT, 0) /* (B24) MMC2_DAT0 */ AM62X_IOPAD(0x110, PIN_INPUT, 0) /* (C25) MMC2_DAT1 */ AM62X_IOPAD(0x10c, PIN_INPUT, 0) /* (E23) MMC2_DAT2 */ AM62X_IOPAD(0x108, PIN_INPUT, 0) /* (D24) MMC2_DAT3 */ AM62X_IOPAD(0x11c, PIN_INPUT, 0) /* (#N/A) MMC2_CLKB */ >; }; main_wlirq_pins_default: main-wlirq-pins-default { pinctrl-single,pins = < AM62X_IOPAD(0x128, PIN_INPUT, 7) /* (B23) MMC2_SDWP.GPIO0_72 */ >; }; main_spi2_pins_default: main-spi2-pins-default { pinctrl-single,pins = < AM62X_IOPAD(0x1B0, PIN_INPUT, 1) /* (A20) SPI2_CLK pins on expansion Header*/ AM62X_IOPAD(0x1AC, PIN_OUTPUT, 1) /* (E19) SPI2_CS0 pins on expansion Header */ AM62X_IOPAD(0x194, PIN_INPUT, 1) /* (B19) SPI2_D0 pins on expansion Header */ AM62X_IOPAD(0x198, PIN_INPUT, 1) /* (A19) SPI2_D1 pins on expansion Header */ >; }; main_mcan0_pins_default: main-mcan0-pins-default { pinctrl-single,pins = < AM62X_IOPAD(0x1dc, PIN_INPUT, 0) /* (E15) MCAN0_RX */ AM62X_IOPAD(0x1d8, PIN_OUTPUT, 0) /* (C15) MCAN0_TX */ >; }; }; &main_i2c1 { exp1: gpio@22 { compatible = "ti,tca6424"; reg = <0x22>; gpio-controller; #gpio-cells = <2>; gpio-line-names = "GPIO_CPSW2_RST", "GPIO_CPSW1_RST", "PRU_DETECT", "MMC1_SD_EN", "VPP_LDO_EN", "EXP_PS_3V3_En", "EXP_PS_5V0_En", "EXP_HAT_DETECT", "GPIO_AUD_RSTn", "GPIO_eMMC_RSTn", "UART1_FET_BUF_EN", "WL_LT_EN", "GPIO_HDMI_RSTn", "CSI_GPIO1", "CSI_GPIO2", "PRU_3V3_EN", "HDMI_INTn", "TEST_GPIO2", "MCASP1_FET_EN", "MCASP1_BUF_BT_EN", "MCASP1_FET_SEL", "UART1_FET_SEL", "TSINT#", "IO_EXP_TEST_LED"; interrupt-parent = <&main_gpio1>; interrupts = <23 IRQ_TYPE_EDGE_FALLING>; interrupt-controller; #interrupt-cells = <2>; pinctrl-names = "default"; pinctrl-0 = <&main_gpio1_ioexp_intr_pins_default>; }; }; &sdhci2 { vmmc-supply = <&wlan_en>; pinctrl-names = "default"; pinctrl-0 = <&main_mmc2_pins_default>; bus-width = <4>; non-removable; ti,fails-without-test-cd; cap-power-off-card; keep-power-in-suspend; ti,driver-strength-ohm = <50>; assigned-clocks = <&k3_clks 157 158>; assigned-clock-parents = <&k3_clks 157 160>; #address-cells = <1>; #size-cells = <0>; wlcore: wlcore@2 { compatible = "ti,wl1837"; reg = <2>; pinctrl-names = "default"; pinctrl-0 = <&main_wlirq_pins_default>; interrupt-parent = <&main_gpio0>; interrupts = <72 IRQ_TYPE_EDGE_FALLING>; }; }; &main_mcan0 { status = "okay"; pinctrl-names = "default"; pinctrl-0 = <&main_mcan0_pins_default>; phys = <&transceiver1>; }; &ospi0 { flash@0 { compatible = "jedec,spi-nor"; reg = <0x0>; spi-tx-bus-width = <8>; spi-rx-bus-width = <8>; spi-max-frequency = <25000000>; cdns,tshsl-ns = <60>; cdns,tsd2d-ns = <60>; cdns,tchsh-ns = <60>; cdns,tslch-ns = <60>; cdns,read-delay = <4>; cdns,phy-mode; partitions { compatible = "fixed-partitions"; #address-cells = <1>; #size-cells = <1>; partition@0 { label = "ospi.tiboot3"; reg = <0x0 0x80000>; }; partition@80000 { label = "ospi.tispl"; reg = <0x80000 0x200000>; }; partition@280000 { label = "ospi.u-boot"; reg = <0x280000 0x400000>; }; partition@680000 { label = "ospi.env"; reg = <0x680000 0x40000>; }; partition@6c0000 { label = "ospi.env.backup"; reg = <0x6c0000 0x40000>; }; partition@800000 { label = "ospi.rootfs"; reg = <0x800000 0x37c0000>; }; partition@3fc0000 { label = "ospi.phypattern"; reg = <0x3fc0000 0x40000>; }; }; }; }; &main_spi2{ pinctrl-names = "default"; pinctrl-0 = <&main_spi2_pins_default>; status = "okay"; adc@0 { compatible = "ti,adc128s052"; reg = <0>; spi-max-frequency = <1000000>; #io-channel-cells = <1>; }; }; /* &main_i2c0 { #address-cells = <1>; #size-cells = <0>; touchscreen@41 { compatible = "ilitek,ili251x"; reg = <0x41>; interrupt-parent = <&exp1>; interrupts = <15 IRQ_TYPE_EDGE_FALLING>; reset-gpios = <&exp2 18 GPIO_ACTIVE_LOW>; }; }; */
请确认在 SK-AM62评估板上启用 SPI2和 LCD 的正确方法。 谢谢
