AM3352: eMMC not being detected by Linux but in uBoot

TJ Snyman

Part Number: AM3352

Tool/software:

I'm having some trouble with the device tree enabling the eMMC on a custom board using the TI SDK 9.01. uBoot manages to find the eMMC memory, and the old OS based on Open Embedded works and detects the eMMC. Below is the logs and device tree. If any person has an idea what I can check further please let me know.

uBoot:

=> mmc list
OMAP SD/MMC: 0 (SD)
OMAP SD/MMC: 1
=> mmc dev 1
switch to partitions #0, OK
mmc1(part 0) is current device
=> mmc list
OMAP SD/MMC: 0 (SD)
OMAP SD/MMC: 1 (eMMC)
=> mmc info
Device: OMAP SD/MMC
Manufacturer ID: 13
OEM: 4e
Name: Q2J54A
Bus Speed: 48000000
Mode: MMC High Speed (52MHz)
Rd Block Len: 512
MMC version 5.0
High Capacity: Yes
Capacity: 3.6 GiB
Bus Width: 8-bit
Erase Group Size: 512 KiB
User Capacity: 3.6 GiB WRREL
Boot Capacity: 2 MiB ENH
RPMB Capacity: 512 KiB ENH
Boot area 0 is not write protected
Boot area 1 is not write protected

Linux:

root@am335x-evm:~# lsblk
NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
mmcblk0     179:0    0 14.9G  0 disk
|-mmcblk0p1 179:1    0   64M  0 part /run/media/mmcblk0p1
`-mmcblk0p2 179:2    0  7.3G  0 part /

[    2.364780] sdhci-omap 481d8000.mmc: supply pbias not found, using dummy regulator
[    2.372638] sdhci-omap 48060000.mmc: Got CD GPIO
[    2.377412] sdhci-omap 48060000.mmc: supply pbias not found, using dummy regulator
[    2.390178] sdhci-omap 481d8000.mmc: supply vqmmc not found, using dummy regulator
[    2.410668] sdhci-omap 48060000.mmc: supply vqmmc not found, using dummy regulator
[    2.455557] mmc1: SDHCI controller on 481d8000.mmc [481d8000.mmc] using External DMA
[    2.465720] mmc0: SDHCI controller on 48060000.mmc [48060000.mmc] using External DMA
[    2.514518] mmc0: new high speed SDHC card at address 0001
[    2.520983] mmcblk0: mmc0:0001 USD 14.9 GiB
[    2.528064]  mmcblk0: p1 p2
[    2.666781] EXT4-fs (mmcblk0p2): warning: mounting fs with errors, running e2fsck is recommended
[    2.679385] EXT4-fs (mmcblk0p2): recovery complete
[    2.685520] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Quota mode: disabled.
[    6.299876] EXT4-fs (mmcblk0p2): re-mounted. Quota mode: disabled.

Device Tree:

	emmc_pins_default: emmc-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x880, PIN_INPUT | MUX_MODE2) /* (U9) gpmc_csn1.mmc1_clk */
			AM33XX_IOPAD(0x884, PIN_INPUT | MUX_MODE2) /* (V9) gpmc_csn2.mmc1_cmd */
			AM33XX_IOPAD(0x800, PIN_INPUT | MUX_MODE1) /* (U7) gpmc_ad0.mmc1_dat0 */
			AM33XX_IOPAD(0x804, PIN_INPUT | MUX_MODE1) /* (V7) gpmc_ad1.mmc1_dat1 */
			AM33XX_IOPAD(0x808, PIN_INPUT | MUX_MODE1) /* (R8) gpmc_ad2.mmc1_dat2 */
			AM33XX_IOPAD(0x80c, PIN_INPUT | MUX_MODE1) /* (T8) gpmc_ad3.mmc1_dat3 */
			AM33XX_IOPAD(0x810, PIN_INPUT | MUX_MODE1) /* (U8) gpmc_ad4.mmc1_dat4 */
			AM33XX_IOPAD(0x814, PIN_INPUT | MUX_MODE1) /* (V8) gpmc_ad5.mmc1_dat5 */
			AM33XX_IOPAD(0x818, PIN_INPUT | MUX_MODE1) /* (R9) gpmc_ad6.mmc1_dat6 */
			AM33XX_IOPAD(0x81c, PIN_INPUT | MUX_MODE1) /* (T9) gpmc_ad7.mmc1_dat7 */
		>;
	};

&mmc2 {
		vmmc-supply = <&vmmc_reg>;
		pinctrl-names = "default";
		pinctrl-0 = <&emmc_pins_default>;
		bus-width = <8>;
		non-removable;
		
		status = "okay";
};

9 months ago

0 TJ Snyman 9 months ago

Prodigy 60 points

After some more debugging, I did notice from the schematic that there is a reset line for the eMMC on gpio1 20. This was not mapped to anything in the old device tree, and the new device tree I'm trying to port does not map that either. Is this now required?

Old Device Tree:

ts-v1/;

#include "am33xx.dtsi"
#include <dt-bindings/pwm/pwm.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/input/input.h>

/ {
	model = "TI AM335x EVM-SK";
	compatible = "ti,am335x-evmsk", "ti,am33xx";
	
	cpus {
		cpu@0 {
			cpu0-supply = <&vdd1_reg>;
		};
	};

	memory {
		device_type = "memory";
		reg = <0x80000000 0x10000000>; /* 256 MB */
	};

	vbat: fixedregulator@0 {
		compatible = "regulator-fixed";
		regulator-name = "vbat";
		regulator-min-microvolt = <5000000>;
		regulator-max-microvolt = <5000000>;
		regulator-boot-on;
	};

	leds {
		pinctrl-names = "default", "sleep";
		pinctrl-0 = <&user_leds>;

		compatible = "gpio-leds";

		led@1 {
			label = "green";
			gpios = <&gpio1 19 GPIO_ACTIVE_HIGH>;
			linux,default-trigger = "none";
			default-state = "off";
		};

		led@2 {
			label = "red";
			gpios = <&gpio1 18 GPIO_ACTIVE_HIGH>;
			linux,default-trigger = "heartbeat";
			default-state = "off";
		};

		led@3 {
			label = "blue";
			gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>;
			linux,default-trigger = "heartbeat";
			default-state = "off";
		};
	};
};

&am33xx_pinmux {

    user_leds: user_leds {
	    pinctrl-single,pins = <
		    0x48 ( PIN_INPUT | MUX_MODE7 ) /* (U14) gpmc_a2.gpio1[18] */
		    0x4c ( PIN_INPUT | MUX_MODE7 ) /* (T14) gpmc_a3.gpio1[19] */
            0x20 ( PIN_INPUT | MUX_MODE7 ) /* (U10) gpmc_ad8.gpio0[22] */
	    >;
    };

    emmc_pins_default: pinmux_emmc_pins_default {
        pinctrl-single,pins = <
			0x80 (PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn1.mmc1_clk */
			0x84 (PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn2.mmc1_cmd */
			0x00 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad0.mmc1_dat0 */
			0x04 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad1.mmc1_dat1 */
			0x08 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad2.mmc1_dat2 */
			0x0c (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad3.mmc1_dat3 */
			0x10 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad4.mmc1_dat4 */
			0x14 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad5.mmc1_dat5 */
			0x18 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad6.mmc1_dat6 */
			0x1c (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad7.mmc1_dat7 */
        >;
            //0x74 (PIN_INPUT_PULLUP | MUX_MODE7) /* gpmc_wpn.gpio0_31 */
			//0x80 (PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn1.mmc1_clk */
			//0x84 (PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn2.mmc1_cmd */
			//0x00 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad0.mmc1_dat0 */
			//0x04 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad1.mmc1_dat1 */
			//0x08 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad2.mmc1_dat2 */
			//0x0c (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad3.mmc1_dat3 */
    };

	cpsw_default: cpsw_default {
		pinctrl-single,pins = <
			/* Slave 1 */
			0x110 (PIN_INPUT_PULLUP | MUX_MODE0)	/* mii1_rxerr.mii1_rxerr */
			0x114 (PIN_OUTPUT_PULLDOWN | MUX_MODE0)	/* mii1_txen.mii1_txen */
			0x118 (PIN_INPUT_PULLUP | MUX_MODE0)	/* mii1_rxdv.mii1_rxdv */
			0x11c (PIN_OUTPUT_PULLDOWN | MUX_MODE0)	/* mii1_txd3.mii1_txd3 */
			0x120 (PIN_OUTPUT_PULLDOWN | MUX_MODE0)	/* mii1_txd2.mii1_txd2 */
			0x124 (PIN_OUTPUT_PULLDOWN | MUX_MODE0)	/* mii1_txd1.mii1_txd1 */
			0x128 (PIN_OUTPUT_PULLDOWN | MUX_MODE0)	/* mii1_txd0.mii1_txd0 */
			0x12c (PIN_INPUT_PULLUP | MUX_MODE0)	/* mii1_txclk.mii1_txclk */
			0x130 (PIN_INPUT_PULLUP | MUX_MODE0)	/* mii1_rxclk.mii1_rxclk */
			0x134 (PIN_INPUT_PULLUP | MUX_MODE0)	/* mii1_rxd3.mii1_rxd3 */
			0x138 (PIN_INPUT_PULLUP | MUX_MODE0)	/* mii1_rxd2.mii1_rxd2 */
			0x13c (PIN_INPUT_PULLUP | MUX_MODE0)	/* mii1_rxd1.mii1_rxd1 */
			0x140 (PIN_INPUT_PULLUP | MUX_MODE0)	/* mii1_rxd0.mii1_rxd0 */
		>;
	};

	davinci_mdio_default: davinci_mdio_default {
		pinctrl-single,pins = <
			/* MDIO */
			0x148 (PIN_INPUT_PULLUP | SLEWCTRL_FAST | MUX_MODE0)	/* mdio_data.mdio_data */
			0x14c (PIN_OUTPUT_PULLUP | MUX_MODE0)			/* mdio_clk.mdio_clk */
		>;
	};
    
    mmc1_pins: pinmux_mmc1_pins {
		pinctrl-single,pins = <
			0x160 (PIN_INPUT | MUX_MODE7) /* GPIO0_6 */
		>;
	};

    
    microsd_pins_default: pinmux_microsd_pins_default {
        pinctrl-single,pins = <
            0x100 ( PIN_INPUT | MUX_MODE0 ) /* (G17) mmc0_clk.mmc0_clk */
            0x104 ( PIN_OUTPUT | MUX_MODE0 ) /* (G18) mmc0_cmd.mmc0_cmd */
            0xfc ( PIN_INPUT | MUX_MODE0 ) /* (G16) mmc0_dat0.mmc0_dat0 */
            0xf8 ( PIN_INPUT | MUX_MODE0 ) /* (G15) mmc0_dat1.mmc0_dat1 */
            0xf4 ( PIN_INPUT | MUX_MODE0 ) /* (F18) mmc0_dat2.mmc0_dat2 */
            0xf0 ( PIN_INPUT | MUX_MODE0 ) /* (F17) mmc0_dat3.mmc0_dat3 */
            0x160 ( PIN_INPUT | MUX_MODE5 ) /* (C15) spi0_cs1.mmc0_sdcd */
        >;
    };
    

    i2c0_pins_default: pinmux_i2c0_pins_default {
        pinctrl-single,pins = <
            0x18c ( PIN_INPUT | MUX_MODE0 ) /* (C16) I2C0_SCL.I2C0_SCL */
            0x188 ( PIN_INPUT | MUX_MODE0 ) /* (C17) I2C0_SDA.I2C0_SDA */
        >;
    };

    i2c2_pins_default: pinmux_i2c2_pins_default {
	    pinctrl-single,pins = <
		    0x17c ( PIN_INPUT | MUX_MODE3 ) /* (D17) uart1_rtsn.I2C2_SCL */
		    0x178 ( PIN_INPUT | MUX_MODE3 ) /* (D18) uart1_ctsn.I2C2_SDA */
	    >;
    };

    uart0_pins_default: pinmux_uart0_pins_default {
        pinctrl-single,pins = <
            0x170 ( PIN_INPUT | MUX_MODE0 ) /* (E15) uart0_rxd.uart0_rxd */
            0x174 ( PIN_OUTPUT | MUX_MODE0 ) /* (E16) uart0_txd.uart0_txd */
        >;
    };


    uart1_pins_default: pinmux_uart1_pins_default {
        pinctrl-single,pins = <
            0x180 ( PIN_INPUT | MUX_MODE0 ) /* (D16) uart1_rxd.uart1_rxd */
            0x184 ( PIN_OUTPUT | MUX_MODE0 ) /* (D15) uart1_txd.uart1_txd */
        >;
    };


    uart2_pins_default: pinmux_uart2_pins_default {
        pinctrl-single,pins = <
            0x150 ( PIN_INPUT | MUX_MODE1 ) /* (A17) spi0_sclk.uart2_rxd */
            0x154 ( PIN_OUTPUT | MUX_MODE1 ) /* (B17) spi0_d0.uart2_txd */
        >;
    };


    uart4_pins_default: pinmux_uart4_pins_default {
        pinctrl-single,pins = <
            0x70 ( PIN_INPUT | MUX_MODE6 ) /* (T17) gpmc_wait0.uart4_rxd */
            0x74 ( PIN_OUTPUT | MUX_MODE6 ) /* (U17) gpmc_wpn.uart4_txd */
        >;
    };
    
    gpio3_pins_default: pinmux_gpio3_pins_default {
        pinctrl-single,pins = <
            0x1a0 ( PIN_OUTPUT | MUX_MODE7 ) /* (B12) mcasp0_aclkr.gpio3[18] */
            0x1a4 ( PIN_INPUT | MUX_MODE7 ) /* (C13) mcasp0_fsr.gpio3[19] */
            0x1a8 ( PIN_INPUT | MUX_MODE7 ) /* (D13) mcasp0_axr1.gpio3[20] */
        >;
    };
};

&uart0 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart0_pins_default>;

	status = "okay";
};

&uart1 {
    label = "secugen";
	pinctrl-names = "default";
	pinctrl-0 = <&uart1_pins_default>;

	status = "okay";
};

&uart2 {
    label = "cardreader";
	pinctrl-names = "default";
	pinctrl-0 = <&uart2_pins_default>;
    
	status = "okay";
};

&uart4 {
    label = "intellirelay";
	pinctrl-names = "default";
	pinctrl-0 = <&uart4_pins_default>;
    //cts-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
    //rts-gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;

	status = "okay";
};

&i2c0 {
	pinctrl-names = "default";
	pinctrl-0 = <&i2c0_pins_default>;

	status = "okay";
	clock-frequency = <400000>;

	tps: tps@2d {
		reg = <0x2d>;
	};
};

&i2c2 {
	pinctrl-names = "default";
	pinctrl-0 = <&i2c2_pins_default>;

	status = "okay";
	clock-frequency = <400000>;
};


#include "tps65910.dtsi"
&tps {
	vcc1-supply = <&vbat>;
	vcc2-supply = <&vbat>;
	vcc3-supply = <&vbat>;
	vcc4-supply = <&vbat>;
	vcc5-supply = <&vbat>;
	vcc6-supply = <&vbat>;
	vcc7-supply = <&vbat>;
	vccio-supply = <&vbat>;

    interrupts = <3 21 IRQ_TYPE_LEVEL_LOW>;
    interrupt-parent = <&intc>;
    ti,en-ck32k-xtal;

	regulators {
		vrtc_reg: regulator@0 {
			regulator-always-on;
		};

		vio_reg: regulator@1 {
			regulator-always-on;
		};

		vdd1_reg: regulator@2 {
			/* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
			regulator-name = "vdd_mpu";
			regulator-min-microvolt = <912500>;
			regulator-max-microvolt = <1351500>;
			regulator-boot-on;
			regulator-always-on;
		};

		vdd2_reg: regulator@3 {
			/* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
			regulator-name = "vdd_core";
			regulator-min-microvolt = <912500>;
			regulator-max-microvolt = <1150000>;
			regulator-boot-on;
			regulator-always-on;
		};

		vdd3_reg: regulator@4 {
			regulator-always-on;
		};

		vdig1_reg: regulator@5 {
			regulator-always-on;
		};

		vdig2_reg: regulator@6 {
			regulator-always-on;
		};

		vpll_reg: regulator@7 {
			regulator-always-on;
		};

		vdac_reg: regulator@8 {
			regulator-always-on;
		};

		vaux1_reg: regulator@9 {
			regulator-always-on;
		};

		vaux2_reg: regulator@10 {
			regulator-always-on;
		};

		vaux33_reg: regulator@11 {
			regulator-always-on;
		};

		vmmc_reg: regulator@12 {
			regulator-min-microvolt = <3300000>;
			regulator-max-microvolt = <3300000>;
			regulator-always-on;
		};
	};
};


&cpsw_emac0 {
	phy_id = <&davinci_mdio>, <0>;
	phy-mode = "mii";
};

&mac {
	pinctrl-names = "default";
	pinctrl-0 = <&cpsw_default>;
	status = "okay";
};

&davinci_mdio {
	pinctrl-names = "default";
	pinctrl-0 = <&davinci_mdio_default>;
	status = "okay";
};

&mmc1 {
    vmmc-supply = <&vmmc_reg>;
	bus-width = <0x4>;
	pinctrl-names = "default";
	pinctrl-0 = <&mmc1_pins>;
	cd-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
	status = "okay";
};

&mmc2 {
	vmmc-supply = <&vmmc_reg>;
	bus-width = <8>;
	pinctrl-names = "default";
	pinctrl-0 = <&emmc_pins_default>;
	status = "okay";
};

&sham {
	status = "okay";
};

&aes {
	status = "okay";
};

&lcdc {
      status = "okay";
};

&rtc {
	system-power-controller;
};

New Device Tree:

&am33xx_pinmux {
	ehrpwm2_pins_default: ehrpwm2-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x820, PIN_OUTPUT | MUX_MODE4) /* (U10) gpmc_ad8.ehrpwm2A */
			AM33XX_IOPAD(0x824, PIN_OUTPUT | MUX_MODE4) /* (T10) gpmc_ad9.ehrpwm2B */
		>;
	};

	glue_pins_default: glue-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x9b4, PIN_OUTPUT | MUX_MODE3) /* (D14) xdma_event_intr1.clkout2 */
		>;
	};

	gpio_1_pins_default: gpio_1-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x968, PIN_OUTPUT_PULLUP | MUX_MODE7) /* (E18) uart0_ctsn.gpio1[8] */
			AM33XX_IOPAD(0x96c, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* (E17) uart0_rtsn.gpio1[9] */
			AM33XX_IOPAD(0x848, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* (U14) gpmc_a2.gpio1[18] */
			AM33XX_IOPAD(0x84c, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* (T14) gpmc_a3.gpio1[19] */
			AM33XX_IOPAD(0x858, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* (U15) gpmc_a6.gpio1[22] */
			AM33XX_IOPAD(0x85c, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* (T15) gpmc_a7.gpio1[23] */
			AM33XX_IOPAD(0x86c, PIN_OUTPUT_PULLUP | MUX_MODE7) /* (V17) gpmc_a11.gpio1[27] */
		>;
	};

	gpio_2_pins_default: gpio_2-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x894, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* (T7) gpmc_oen_ren.gpio2[3] */
			AM33XX_IOPAD(0x898, PIN_INPUT_PULLDOWN | MUX_MODE7) /* (U6) gpmc_wen.gpio2[4] */
		>;
	};

	gpio_3_pins_default: gpio_3-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x9e4, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* (C14) EMU0.gpio3[7] */
			AM33XX_IOPAD(0x9e8, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* (B14) EMU1.gpio3[8] */
			AM33XX_IOPAD(0x990, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* (A13) mcasp0_aclkx.gpio3[14] */
			AM33XX_IOPAD(0x998, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* (D12) mcasp0_axr0.gpio3[16] */

		>;
	};

	i2c0_pins_default: i2c0-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x98c, PIN_INPUT | MUX_MODE0) /* (C16) I2C0_SCL.I2C0_SCL */
			AM33XX_IOPAD(0x988, PIN_INPUT | MUX_MODE0) /* (C17) I2C0_SDA.I2C0_SDA */
		>;
	};

	i2c1_pins_default: i2c1-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x95c, PIN_INPUT | MUX_MODE2) /* (A16) spi0_cs0.I2C1_SCL */
			AM33XX_IOPAD(0x958, PIN_INPUT | MUX_MODE2) /* (B16) spi0_d1.I2C1_SDA */
		>;
	};

	i2c2_pins_default: i2c2-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x97c, PIN_INPUT | MUX_MODE3) /* (D17) uart1_rtsn.I2C2_SCL */
			AM33XX_IOPAD(0x978, PIN_INPUT | MUX_MODE3) /* (D18) uart1_ctsn.I2C2_SDA */
		>;
	};

	lcd_pins_default: lcd-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x8e0, PIN_OUTPUT | MUX_MODE0) /* (U5) lcd_vsync.lcd_vsync */
			AM33XX_IOPAD(0x8e4, PIN_OUTPUT | MUX_MODE0) /* (R5) lcd_hsync.lcd_hsync */
			AM33XX_IOPAD(0x8e8, PIN_OUTPUT | MUX_MODE0) /* (V5) lcd_pclk.lcd_pclk */
			AM33XX_IOPAD(0x8ec, PIN_OUTPUT | MUX_MODE0) /* (R6) lcd_ac_bias_en.lcd_ac_bias_en */
			AM33XX_IOPAD(0x8a0, PIN_OUTPUT | MUX_MODE0) /* (R1) lcd_data0.lcd_data0 */
			AM33XX_IOPAD(0x8a4, PIN_OUTPUT | MUX_MODE0) /* (R2) lcd_data1.lcd_data1 */
			AM33XX_IOPAD(0x8a8, PIN_OUTPUT | MUX_MODE0) /* (R3) lcd_data2.lcd_data2 */
			AM33XX_IOPAD(0x8ac, PIN_OUTPUT | MUX_MODE0) /* (R4) lcd_data3.lcd_data3 */
			AM33XX_IOPAD(0x8b0, PIN_OUTPUT | MUX_MODE0) /* (T1) lcd_data4.lcd_data4 */
			AM33XX_IOPAD(0x8b4, PIN_OUTPUT | MUX_MODE0) /* (T2) lcd_data5.lcd_data5 */
			AM33XX_IOPAD(0x8b8, PIN_OUTPUT | MUX_MODE0) /* (T3) lcd_data6.lcd_data6 */
			AM33XX_IOPAD(0x8bc, PIN_OUTPUT | MUX_MODE0) /* (T4) lcd_data7.lcd_data7 */
			AM33XX_IOPAD(0x8c0, PIN_OUTPUT | MUX_MODE0) /* (U1) lcd_data8.lcd_data8 */
			AM33XX_IOPAD(0x8c4, PIN_OUTPUT | MUX_MODE0) /* (U2) lcd_data9.lcd_data9 */
			AM33XX_IOPAD(0x8c8, PIN_OUTPUT | MUX_MODE0) /* (U3) lcd_data10.lcd_data10 */
			AM33XX_IOPAD(0x8cc, PIN_OUTPUT | MUX_MODE0) /* (U4) lcd_data11.lcd_data11 */
			AM33XX_IOPAD(0x8d0, PIN_OUTPUT | MUX_MODE0) /* (V2) lcd_data12.lcd_data12 */
			AM33XX_IOPAD(0x8d4, PIN_OUTPUT | MUX_MODE0) /* (V3) lcd_data13.lcd_data13 */
			AM33XX_IOPAD(0x8d8, PIN_OUTPUT | MUX_MODE0) /* (V4) lcd_data14.lcd_data14 */
			AM33XX_IOPAD(0x8dc, PIN_OUTPUT | MUX_MODE0) /* (T5) lcd_data15.lcd_data15 */
		>;
	};

	mcasp0_pins_default: mcasp0-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x99c, PIN_INPUT | MUX_MODE0) /* (C12) mcasp0_ahclkr.mcasp0_ahclkr */
			AM33XX_IOPAD(0x9a0, PIN_INPUT | MUX_MODE0) /* (B12) mcasp0_aclkr.mcasp0_aclkr */
			AM33XX_IOPAD(0x9a4, PIN_INPUT | MUX_MODE0) /* (C13) mcasp0_fsr.mcasp0_fsr */
			AM33XX_IOPAD(0x9a8, PIN_OUTPUT | MUX_MODE0) /* (D13) mcasp0_axr1.mcasp0_axr1 */
			AM33XX_IOPAD(0x9ac, PIN_INPUT | MUX_MODE2) /* (A14) mcasp0_ahclkx.mcasp0_axr3 */
		>;
	};

	mdio_pins_default: mdio-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x94c, PIN_OUTPUT | MUX_MODE0) /* (M18) mdio_clk.mdio_clk */
			AM33XX_IOPAD(0x948, PIN_INPUT | MUX_MODE0) /* (M17) mdio_data.mdio_data */
		>;
	};

	mii1_pins_default: mii1-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x908, PIN_INPUT | MUX_MODE0) /* (H16) gmii1_col.gmii1_col */
			AM33XX_IOPAD(0x90c, PIN_INPUT | MUX_MODE0) /* (H17) gmii1_crs.gmii1_crs */
			AM33XX_IOPAD(0x910, PIN_INPUT | MUX_MODE0) /* (J15) gmii1_rxer.gmii1_rxer */
			AM33XX_IOPAD(0x914, PIN_OUTPUT | MUX_MODE0) /* (J16) gmii1_txen.gmii1_txen */
			AM33XX_IOPAD(0x918, PIN_INPUT | MUX_MODE0) /* (J17) gmii1_rxdv.gmii1_rxdv */
			AM33XX_IOPAD(0x92c, PIN_INPUT | MUX_MODE0) /* (K18) gmii1_txclk.gmii1_txclk */
			AM33XX_IOPAD(0x930, PIN_INPUT | MUX_MODE0) /* (L18) gmii1_rxclk.gmii1_rxclk */
			AM33XX_IOPAD(0x928, PIN_OUTPUT | MUX_MODE0) /* (K17) gmii1_txd0.gmii1_txd0 */
			AM33XX_IOPAD(0x924, PIN_OUTPUT | MUX_MODE0) /* (K16) gmii1_txd1.gmii1_txd1 */
			AM33XX_IOPAD(0x920, PIN_OUTPUT | MUX_MODE0) /* (K15) gmii1_txd2.gmii1_txd2 */
			AM33XX_IOPAD(0x91c, PIN_OUTPUT | MUX_MODE0) /* (J18) gmii1_txd3.gmii1_txd3 */
			AM33XX_IOPAD(0x940, PIN_INPUT | MUX_MODE0) /* (M16) gmii1_rxd0.gmii1_rxd0 */
			AM33XX_IOPAD(0x93c, PIN_INPUT | MUX_MODE0) /* (L15) gmii1_rxd1.gmii1_rxd1 */
			AM33XX_IOPAD(0x938, PIN_INPUT | MUX_MODE0) /* (L16) gmii1_rxd2.gmii1_rxd2 */
			AM33XX_IOPAD(0x934, PIN_INPUT | MUX_MODE0) /* (L17) gmii1_rxd3.gmii1_rxd3 */
		>;
	};

	usdcard_pins_default: usdcard-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x900, PIN_INPUT | MUX_MODE0) /* (G17) mmc0_clk.mmc0_clk */
			AM33XX_IOPAD(0x904, PIN_INPUT | MUX_MODE0) /* (G18) mmc0_cmd.mmc0_cmd */
			AM33XX_IOPAD(0x8fc, PIN_INPUT | MUX_MODE0) /* (G16) mmc0_dat0.mmc0_dat0 */
			AM33XX_IOPAD(0x8f8, PIN_INPUT | MUX_MODE0) /* (G15) mmc0_dat1.mmc0_dat1 */
			AM33XX_IOPAD(0x8f4, PIN_INPUT | MUX_MODE0) /* (F18) mmc0_dat2.mmc0_dat2 */
			AM33XX_IOPAD(0x8f0, PIN_INPUT | MUX_MODE0) /* (F17) mmc0_dat3.mmc0_dat3 */
			AM33XX_IOPAD(0x960, PIN_INPUT | MUX_MODE5) /* (C15) spi0_cs1.mmc0_sdcd */
		>;
	};

	emmc_pins_default: emmc-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x880, PIN_INPUT | MUX_MODE2) /* (U9) gpmc_csn1.mmc1_clk */
			AM33XX_IOPAD(0x884, PIN_INPUT | MUX_MODE2) /* (V9) gpmc_csn2.mmc1_cmd */
			AM33XX_IOPAD(0x800, PIN_INPUT | MUX_MODE1) /* (U7) gpmc_ad0.mmc1_dat0 */
			AM33XX_IOPAD(0x804, PIN_INPUT | MUX_MODE1) /* (V7) gpmc_ad1.mmc1_dat1 */
			AM33XX_IOPAD(0x808, PIN_INPUT | MUX_MODE1) /* (R8) gpmc_ad2.mmc1_dat2 */
			AM33XX_IOPAD(0x80c, PIN_INPUT | MUX_MODE1) /* (T8) gpmc_ad3.mmc1_dat3 */
			AM33XX_IOPAD(0x810, PIN_INPUT | MUX_MODE1) /* (U8) gpmc_ad4.mmc1_dat4 */
			AM33XX_IOPAD(0x814, PIN_INPUT | MUX_MODE1) /* (V8) gpmc_ad5.mmc1_dat5 */
			AM33XX_IOPAD(0x818, PIN_INPUT | MUX_MODE1) /* (R9) gpmc_ad6.mmc1_dat6 */
			AM33XX_IOPAD(0x81c, PIN_INPUT | MUX_MODE1) /* (T9) gpmc_ad7.mmc1_dat7 */
		>;
	};

	spi1_pins_default: spi1-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x990, PIN_INPUT | MUX_MODE3) /* (A13) mcasp0_aclkx.spi1_sclk */
			AM33XX_IOPAD(0x994, PIN_INPUT | MUX_MODE3) /* (B13) mcasp0_fsx.spi1_d0 */
			AM33XX_IOPAD(0x998, PIN_INPUT | MUX_MODE3) /* (D12) mcasp0_axr0.spi1_d1 */
			AM33XX_IOPAD(0x96c, PIN_INPUT | MUX_MODE5) /* (E17) uart0_rtsn.spi1_cs0 */
			AM33XX_IOPAD(0x9b0, PIN_INPUT | MUX_MODE4) /* (A15) xdma_event_intr0.spi1_cs1 */
		>;
	};

	uart0_pins_default: uart0-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x970, PIN_INPUT | MUX_MODE0) /* (E15) uart0_rxd.uart0_rxd */
			AM33XX_IOPAD(0x974, PIN_OUTPUT | MUX_MODE0) /* (E16) uart0_txd.uart0_txd */
		>;
	};

	uart1_pins_default: uart1-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x980, PIN_INPUT | MUX_MODE0) /* (D16) uart1_rxd.uart1_rxd */
			AM33XX_IOPAD(0x984, PIN_OUTPUT | MUX_MODE0) /* (D15) uart1_txd.uart1_txd */
		>;
	};

	uart2_pins_default: uart2-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x950, PIN_INPUT | MUX_MODE1) /* (A17) spi0_sclk.uart2_rxd */
			AM33XX_IOPAD(0x954, PIN_OUTPUT | MUX_MODE1) /* (B17) spi0_d0.uart2_txd */
		>;
	};

	uart4_pins_default: uart4-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x870, PIN_INPUT | MUX_MODE6) /* (T17) gpmc_wait0.uart4_rxd */
			AM33XX_IOPAD(0x874, PIN_OUTPUT | MUX_MODE6) /* (U17) gpmc_wpn.uart4_txd */
		>;
	};
};

#include "am33xx.dtsi"
#include "am335x_ipb5_pinmux.dtsi"

/ {
	model = "TI AM335x Hello World ";
	compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";

        memory@80000000 {
                device_type = "memory";
                reg = <0x80000000 0x10000000>; /* 256 MB */
        };

        chosen {
                stdout-path = &uart0;
        };

        vmmcsd_fixed: fixedregulator0 {
				compatible = "regulator-fixed";
				regulator-name = "vmmcsd_fixed";
				regulator-min-microvolt = <5000000>;
				regulator-max-microvolt = <5000000>;
				regulator-boot-on;
        };

        leds {
             compatible = "gpio-leds";
             led_white {
                     lable = "led_white";
                     gpios = <&gpio3 8 GPIO_ACTIVE_HIGH>;
                     linux,default-trigger = "heartbeat";
             };

             led_green {
                     label = "led_green";
                     gpios = <&gpio1 18 GPIO_ACTIVE_HIGH>;
                     linux,default-trigger = "heartbeat";
             };

             led_red {
                     label = "led_red";
                     gpios = <&gpio3 7 GPIO_ACTIVE_HIGH>;
                     linux,default-trigger = "heartbeat";
             };
        };

		panel {
			compatible = "ti,tilcdc,panel";
			pinctrl-names = "default";
			pinctrl-0 = <&lcd_pins_default>;
			status = "okay";
			panel-info {
				ac-bias           = <255>;
				ac-bias-intrpt    = <0>;
				dma-burst-sz      = <16>;
				bpp               = <16>;
				fdd               = <0x80>;
				sync-edge         = <0>;
				sync-ctrl         = <1>;
				raster-order      = <0>;
				fifo-th           = <0>;
			};
			display-timings {
				480x800 {
					hactive         = <480>;
					vactive         = <800>;
					hback-porch     = <20>;
					hfront-porch    = <38>;
					hsync-len       = <20>;
					vback-porch     = <20>;
					vfront-porch    = <20>;
					vsync-len       = <20>;
					clock-frequency = <28792800>; /* 28792800 */
					hsync-active    = <0>;
					vsync-active    = <0>;
				};
			};
		};
};

&uart0 {
        pinctrl-names = "default";
        pinctrl-0 = <&uart0_pins_default>;
        
        status = "okay";
};

&uart1 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart1_pins_default>;

	status = "okay";
};

&uart2 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart2_pins_default>;

	status = "okay";
};

&uart4 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart4_pins_default>;
    //cts-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
    //rts-gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;

	status = "okay";
};

&mmc1 {
        bus-width = <0x4>;
        pinctrl-names = "default";
        pinctrl-0 = <&usdcard_pins_default>;
        cd-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
		vmmc-supply = <&vmmc_reg>;
		
		status = "okay";
};

&mmc2 {
		vmmc-supply = <&vmmc_reg>;
		pinctrl-names = "default";
		pinctrl-0 = <&emmc_pins_default>;
		bus-width = <8>;
		non-removable;
		reset-gpios = <&gpio1 20 GPIO_ACTIVE_LOW>;
		
		status = "okay";
};

&i2c0 {
	pinctrl-names = "default";
	pinctrl-0 = <&i2c0_pins_default>;

	status = "okay";
	clock-frequency = <400000>;

	tps: tps@2d {
		reg = <0x2d>;
	};
};

&i2c1 {
	pinctrl-names = "default";
	pinctrl-0 = <&i2c1_pins_default>;

	status = "okay";
	clock-frequency = <400000>;

	focaltech@38{
		compatible = "focaltech,fts";
		reg = <0x38>;
		interrupt-parent = <&gpio2>;
		interrupts = <&gpio2 4>;
		focaltech,reset-gpio = <&gpio2 3 GPIO_ACTIVE_LOW>;
		focaltech,irq-gpio = <&gpio2 4 GPIO_ACTIVE_HIGH>;
		focaltech,max-touch-number = <5>;
		focaltech,display-coords =  <0 0 800 480>;
	};
};

#include "tps65910.dtsi"
&tps {
	vcc1-supply = <&vmmcsd_fixed>;
	vcc2-supply = <&vmmcsd_fixed>;
	vcc3-supply = <&vmmcsd_fixed>;
	vcc4-supply = <&vmmcsd_fixed>;
	vcc5-supply = <&vmmcsd_fixed>;
	vcc6-supply = <&vmmcsd_fixed>;
	vcc7-supply = <&vmmcsd_fixed>;
	vccio-supply = <&vmmcsd_fixed>;

//    interrupts = <&gpio3 21 GPIO_ACTIVE_LOW>;
//    interrupt-parent = <&intc>;
//    ti,en-ck32k-xtal;

	regulators {
		vrtc_reg: regulator@0 {
			regulator-always-on;
		};

		vio_reg: regulator@1 {
			regulator-always-on;
		};

		vdd1_reg: regulator@2 {
			/* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
			regulator-name = "vdd_mpu";
			regulator-min-microvolt = <912500>;
			regulator-max-microvolt = <1351500>;
			regulator-boot-on;
			regulator-always-on;
		};

		vdd2_reg: regulator@3 {
			/* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
			regulator-name = "vdd_core";
			regulator-min-microvolt = <912500>;
			regulator-max-microvolt = <1150000>;
			regulator-boot-on;
			regulator-always-on;
		};

		vdd3_reg: regulator@4 {
			regulator-always-on;
		};

		vdig1_reg: regulator@5 {
			regulator-always-on;
		};

		vdig2_reg: regulator@6 {
			regulator-always-on;
		};

		vpll_reg: regulator@7 {
			regulator-always-on;
		};

		vdac_reg: regulator@8 {
			regulator-always-on;
		};

		vaux1_reg: regulator@9 {
			regulator-always-on;
		};

		vaux2_reg: regulator@10 {
			regulator-always-on;
		};

		vaux33_reg: regulator@11 {
			regulator-always-on;
		};

		vmmc_reg: regulator@12 {
			regulator-min-microvolt = <3300000>;
			regulator-max-microvolt = <3300000>;
			regulator-always-on;
		};
	};
};

&cpsw_emac0 {
	phy_id = <&davinci_mdio>, <0>;
	phy-mode = "mii";
};

&mac {
	pinctrl-names = "default";
	pinctrl-0 = <&mii1_pins_default>;
	status = "okay";
};

&davinci_mdio {
	pinctrl-names = "default";
	pinctrl-0 = <&mdio_pins_default>;
	status = "okay";
};

&lcdc {
      status = "okay";
};

&gpio0 {
	gpio-line-names =
		"FIRST",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"SDCARD_CD",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"LAST";
};

&gpio1 { //fix gpio places. not everything in correct place
	gpio-line-names =
		"FIRST",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"IR_485_EN_TX",
		"LCD_CS",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"IND_LED_GREEN",
		"IND_BUZZ",
		"EMMC_ENABLE",
		"NA",
		"SEC_BIO_RESET",
		"SEC_BIO_EN",
		"NA",
		"NA",
		"NA",
		"LCD_RESET",
		"NA",
		"NA",
		"NA",
		"LAST";
};

&gpio2 {
	gpio-line-names =
		"FIRST",
		"NA",
		"NA",
		"LCD_CPT_RESET",
		"LCD_CPT_INT",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"LAST";
};

&gpio3 {
	gpio-line-names =
		"FIRST",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"IND_LED_RED",
		"IND_LED_WHITE",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"LCD_CSL",
		"NA",
		"LCD_MOSI",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"NA",
		"LAST";
};

+1 Bin Liu 9 months ago in reply to TJ Snyman

TI__Guru**** 171161 points

Hi TJ,

TJ Snyman said:
I did notice from the schematic that there is a reset line for the eMMC on gpio1 20. This was not mapped to anything in the old device tree, and the new device tree I'm trying to port does not map that either. Is this now required?

I see the Beaglebone Black board schematics also has gpio1_20 connected to eMMC RSTn pin, but the kernel devicetree doesn't map gpio1_20 either. So I don't think this reset pin is required.

Regarding to the eMMC pinmux, I see your old devicetree uses "PIN_INPUT_PULLUP", but the new devicetree doesn't have "_PULLUP". Can you please add the "_PULLUP" in the kernel devicetree to see if it makes difference? Does your board have external pullup resisters on those eMMC pins?

0 TJ Snyman 9 months ago in reply to Bin Liu

Prodigy 60 points

Thank you very much. This solved the issue. Changing them to PULLUP in the pinmux fixed the issue. The eMMC does have external pullup resistors (as below), but this still fixed the issue.

Pullups:

New Pinmux:

	emmc_pins_default: emmc-default-pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x880, PIN_INPUT_PULLUP | MUX_MODE2) /* (U9) gpmc_csn1.mmc1_clk */
			AM33XX_IOPAD(0x884, PIN_INPUT_PULLUP | MUX_MODE2) /* (V9) gpmc_csn2.mmc1_cmd */
			AM33XX_IOPAD(0x800, PIN_INPUT_PULLUP | MUX_MODE1) /* (U7) gpmc_ad0.mmc1_dat0 */
			AM33XX_IOPAD(0x804, PIN_INPUT_PULLUP | MUX_MODE1) /* (V7) gpmc_ad1.mmc1_dat1 */
			AM33XX_IOPAD(0x808, PIN_INPUT_PULLUP | MUX_MODE1) /* (R8) gpmc_ad2.mmc1_dat2 */
			AM33XX_IOPAD(0x80c, PIN_INPUT_PULLUP | MUX_MODE1) /* (T8) gpmc_ad3.mmc1_dat3 */
			AM33XX_IOPAD(0x810, PIN_INPUT_PULLUP | MUX_MODE1) /* (U8) gpmc_ad4.mmc1_dat4 */
			AM33XX_IOPAD(0x814, PIN_INPUT_PULLUP | MUX_MODE1) /* (V8) gpmc_ad5.mmc1_dat5 */
			AM33XX_IOPAD(0x818, PIN_INPUT_PULLUP | MUX_MODE1) /* (R9) gpmc_ad6.mmc1_dat6 */
			AM33XX_IOPAD(0x81c, PIN_INPUT_PULLUP | MUX_MODE1) /* (T9) gpmc_ad7.mmc1_dat7 */
		>;
	};

lsblk:

root@am335x-evm:~# lsblk
NAME         MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
mmcblk0      179:0    0 14.9G  0 disk
|-mmcblk0p1  179:1    0   64M  0 part /run/media/mmcblk0p1
`-mmcblk0p2  179:2    0  7.3G  0 part /
mmcblk1      179:16   0  3.6G  0 disk
`-mmcblk1p1  179:17   0  3.6G  0 part /run/media/mmcblk1p1
mmcblk1boot0 179:32   0    2M  1 disk
mmcblk1boot1 179:48   0    2M  1 disk

0 Bin Liu 9 months ago in reply to TJ Snyman

TI__Guru**** 171161 points

Hi TJ,

Glad to hear the issue is resolved. Thanks for the update.

The Beaglebone Black board devicetree has the PULLUP configured on all the eMMC pins.

Processors

Processors forum

AM3352: eMMC not being detected by Linux but in uBoot