Kernel overlays causing pinmux conflicts (kernel version 4.4.27-bone-rt-r16)
Mrudula Chougule
Hi,
I am using beagle bone green running with u-boot 2016.11.rc3 kernel
4.4.27-bone-rt-r16, rootfs ubuntu 16.04. My uEnv.txt file is as below:
cmdline=cape_disable=bone_capemgr.disable_partno=BB-BONELT-HDMI,
BB-BONELT-HDMIN, BB-BONE-HDMI
bone_capemgr.enable_partno=BB-UART1,BB-AAIM-LCD:00A1,BB-UART4,BB-UART2,BB-I2C1.
On bootup it runs uenvcmd.
I have below pinmux conflict errors while loading dtbs:
[ 10.357438] systemd-journald[142]: Received request to flush runtime journal from PID 1
[ 11.755032] pinctrl-single 44e10800.pinmux: pin 44e10984.0 already
requested by 48022000.serial; cannot claim for 48302200.ehrpwm
[ 11.764547] davinci-mcasp 48038000.mcasp: invalid tdm slots: 0
[ 11.784831] omap_rng 48310000.rng: OMAP Random Number Generator ver. 20
[ 11.785262] davinci-mcasp 4803c000.mcasp: invalid tdm slots: 0
[ 11.808619] of_graph_get_next_endpoint(): no port node found in /ocp/lcdc@4830e000
[ 11.815271] of_graph_get_next_endpoint(): no port node found in /ocp/lcdc@4830e000
[ 11.835121] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 11.835126] [drm] No driver support for vblank timestamp query.
[ 12.175199] pinctrl-single 44e10800.pinmux: pin-97 (48302200.ehrpwm) status -22
[ 12.175215] pinctrl-single 44e10800.pinmux: could not request pin 97
(44e10984.0) from group pinmux_bb_uart1_pins on device pinctrl-single
[ 12.175223] ehrpwm 48302200.ehrpwm: Error applying setting, reverse things back
Could you please guide me how to resolve these errors.
Attaching our custom dtb for LCD:
/*
- Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License version 2 as
- published by the Free Software Foundation.
*/
/dts-v1/;
/plugin/;
#include <dt-bindings/board/am335x-bbw-bbb-base.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pinctrl/am33xx.h>
/ {
compatible = "ti,beaglebone", "ti,beaglebone-black", "ti,beaglebone-green";
/* identification */
part-number = "BB-AAIM-LCD";
version = "00A1";
/* state the resources this cape uses */
exclusive-use =
/* the pin header uses */
"P8.45", /* lcd: lcd_data0 */
"P8.46", /* lcd: lcd_data1 */
"P8.43", /* lcd: lcd_data2 */
"P8.44", /* lcd: lcd_data3 */
"P8.41", /* lcd: lcd_data4 */
"P8.42", /* lcd: lcd_data5 */
"P8.39", /* lcd: lcd_data6 */
"P8.40", /* lcd: lcd_data7 */
"P8.37", /* lcd: lcd_data8 */
"P8.38", /* lcd: lcd_data9 */
"P8.36", /* lcd: lcd_data10 */
"P8.34", /* lcd: lcd_data11 */
"P8.35", /* lcd: lcd_data12 */
"P8.33", /* lcd: lcd_data13 */
"P8.31", /* lcd: lcd_data14 */
"P8.32", /* lcd: lcd_data15 */
"P8.15", /* gpmc_ad15.lcd_data16 */
"P8.16", /* gpmc_ad14.lcd_data17 */
"P8.11", /* gpmc_ad13.lcd_data18 */
"P8.12", /* gpmc_ad12.lcd_data19 */
"P8.17", /* gpmc_ad11.lcd_data20 */
"P8.14", /* gpmc_ad10.lcd_data21 */
"P8.13", /* gpmc_ad9.lcd_data22 */
"P8.19", /* gpmc_ad8.lcd_data23 */
"P8.27", /* lcd: lcd_vsync */
"P8.29", /* lcd: lcd_hsync */
"P8.28", /* lcd: lcd_pclk */
"P8.30", /* lcd: lcd_ac_bias_en */
"P9.27", /* lcd: gpio3_19 */
"P9.12", /* led: gpio1_28 */
"P9.14", /* pwm: ehrpwm1a */
"lcd",
"ehrpwm1a";
fragment@0 {
target = <&am33xx_pinmux>;
__overlay__ {
bb_lcd_pwm_backlight_pins: pinmux_bb_lcd_pwm_backlight_pins {
pinctrl-single,pins = <
BONE_P9_14 (PIN_OUTPUT_PULLUP | MUX_MODE7) /* gpmc_a2.ehrpwm1a */
>;
};
bb_lcd_lcd_pins: pinmux_bb_lcd_lcd_pins {
pinctrl-single,pins = <
BONE_P8_45 (PIN_OUTPUT | MUX_MODE0) /* lcd_data0.lcd_data0 */
BONE_P8_46 (PIN_OUTPUT | MUX_MODE0) /* lcd_data1.lcd_data1 */
BONE_P8_43 (PIN_OUTPUT | MUX_MODE0) /* lcd_data2.lcd_data2 */
BONE_P8_44 (PIN_OUTPUT | MUX_MODE0) /* lcd_data3.lcd_data3 */
BONE_P8_41 (PIN_OUTPUT | MUX_MODE0) /* lcd_data4.lcd_data4 */
BONE_P8_42 (PIN_OUTPUT | MUX_MODE0) /* lcd_data5.lcd_data5 */
BONE_P8_39 (PIN_OUTPUT | MUX_MODE0) /* lcd_data6.lcd_data6 */
BONE_P8_40 (PIN_OUTPUT | MUX_MODE0) /* lcd_data7.lcd_data7 */
BONE_P8_37 (PIN_OUTPUT | MUX_MODE0) /* lcd_data8.lcd_data8 */
BONE_P8_38 (PIN_OUTPUT | MUX_MODE0) /* lcd_data9.lcd_data9 */
BONE_P8_36 (PIN_OUTPUT | MUX_MODE0) /* lcd_data10.lcd_data10 */
BONE_P8_34 (PIN_OUTPUT | MUX_MODE0) /* lcd_data11.lcd_data11 */
BONE_P8_35 (PIN_OUTPUT | MUX_MODE0) /* lcd_data12.lcd_data12 */
BONE_P8_33 (PIN_OUTPUT | MUX_MODE0) /* lcd_data13.lcd_data13 */
BONE_P8_31 (PIN_OUTPUT | MUX_MODE0) /* lcd_data14.lcd_data14 */
BONE_P8_32 (PIN_OUTPUT | MUX_MODE0) /* lcd_data15.lcd_data15 */
BONE_P8_15 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad15.lcd_data16 */
BONE_P8_16 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad14.lcd_data17 */
BONE_P8_11 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad13.lcd_data18 */
BONE_P8_12 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad12.lcd_data19 */
BONE_P8_17 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad11.lcd_data20 */
BONE_P8_14 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad10.lcd_data21 */
BONE_P8_13 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad9.lcd_data22 */
BONE_P8_19 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad8.lcd_data23 */
BONE_P8_27 (PIN_OUTPUT | MUX_MODE0) /* lcd_vsync.lcd_vsync */
BONE_P8_29 (PIN_OUTPUT | MUX_MODE0) /* lcd_hsync.lcd_hsync */
BONE_P8_28 (PIN_OUTPUT | MUX_MODE0) /* lcd_pclk.lcd_pclk */
BONE_P8_30 (PIN_OUTPUT | MUX_MODE0) /* lcd_ac_bias_en.lcd_ac_bias_en */
>;
};
};
};
fragment@1 {
target = <&epwmss1>;
__overlay__ {
status = "okay";
};
};
fragment@2 {
target = <&ehrpwm1>;
__overlay__ {
pinctrl-names = "default";
pinctrl-0 = <&bb_lcd_pwm_backlight_pins>;
status = "okay";
};
};
fragment@3 {
target = <&lcdc>;
__overlay__ {
status = "okay";
};
};
fragment@4 {
target-path="/";
__overlay__ {
/* avoid stupid warning */
#address-cells = <1>;
#size-cells = <1>;
/* Embest 7 inch LCD cape: */
panel {
status = "okay";
compatible = "ti,tilcdc,panel";
pinctrl-names = "default";
pinctrl-0 = <&bb_lcd_lcd_pins>;
panel-info {
ac-bias = <255>;
ac-bias-intrpt = <0>;
dma-burst-sz = <16>;
bpp = <32>;
fdd = <0x80>;
tft-alt-mode = <0>;
stn-565-mode = <0>;
mono-8bit-mode = <0>;
sync-edge = <0>;
sync-ctrl = <0>;
raster-order = <1>;
fifo-th = <0>;
};
display-timings {
native-mode = <&timing0>;
timing0: 1280x800 {
clock-frequency = <68000000>;
hactive = <1280>;
vactive = <800>;
hfront-porch = <64>;
hback-porch = <5>;
hsync-len = <2>; /* was 30 */
vback-porch = <2>;
vfront-porch = <40>;
vsync-len = <2>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <0>;
pixelclk-active = <0>;
};
};
};
};
};
};
Thanks,
Mrudula
Robert Nelson
> -22
> [ 12.175215] pinctrl-single 44e10800.pinmux: could not request pin 97
> (44e10984.0) from group pinmux_bb_uart1_pins on device pinctrl-single
> [ 12.175223] ehrpwm 48302200.ehrpwm: Error applying setting, reverse things
> back
Regards,
--
Robert Nelson
https://rcn-ee.com/