We had a custom tft lcd display driver working just fine on sdk 7 (linux 3.12) . The driver simply sends the spi messages to initialize the display. We install it in the spi node of the device tree. We have updated our kernel to 4.1, and have updated the driver to match the style of panel-nec-nl8048hl11.c, which was the starting point for our original driver too. Our new board is based on the beaglebone, and is using the am3354
The devicetree has lcdc node, and the spi node, however I am not getting any display (backlight is on) and am getting an error in dmesg:
[ 1.261127] panel-cordial-ct040blp32 spi1.0: failed to find video source
[ 1.267895] panel-cordial-ct040blp32: probe of spi1.0 failed with error -22
there are also many messages similar to this one, which may be relevant so I include it here just in case. DRM is turned off in the kernel config.
[ 5.266453] drm_kms_helper: Unknown symbol drm_framebuffer_cleanup (err 0)
I'm suspecting that the problem is in the dts configuration, here is how the dts is setup (based on am335x-boneblack.dts) can someone please advise me on how to get this working again?
/* * 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/; #include "am33xx.dtsi" #include "am335x-bone-common.dtsi" #include <dt-bindings/interrupt-controller/irq.h> / { model = "TI AM335x KV3"; compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx"; wlan_en_reg: fixedregulator@1 { compatible = "regulator-fixed"; regulator-name = "wlan-en-regulator"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; gpio = <&gpio1 17 GPIO_ACTIVE_HIGH>; enable-active-high; }; }; &ldo3_reg { regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; regulator-always-on; }; &mmc1 { status = "okay"; vmmc-supply = <&wlan_en_reg>; bus-width = <4>; pinctrl-names = "default", "sleep"; pinctrl-0 = <&mmc1_pins_default &wlan_pins_default>; pinctrl-1 = <&mmc1_pins_sleep &wlan_pins_sleep>; ti,non-removable; ti,needs-special-hs-handling; cap-power-off-card; keep-power-in-suspend; /* Override defaults from bone-common */ cd-gpios = <>; /* no card detect */ #address-cells = <1>; #size-cells = <0>; wlcore: wlcore@0 { compatible = "ti,wl1831"; reg = <2>; interrupt-parent = <&gpio1>; interrupts = <16 IRQ_TYPE_EDGE_RISING>; }; }; &mmc2 { vmmc-supply = <&vmmcsd_fixed>; pinctrl-names = "default"; pinctrl-0 = <&emmc_pins>; bus-width = <8>; status = "okay"; }; &sgx { status = "okay"; }; &am33xx_pinmux { lcd_pins_default: lcd_pins_default { pinctrl-single,pins = < 0xe0 ( PIN_OUTPUT | MUX_MODE0 ) /* (U5) lcd_vsync.lcd_vsync */ 0xe4 ( PIN_OUTPUT | MUX_MODE0 ) /* (R5) lcd_hsync.lcd_hsync */ 0xe8 ( PIN_OUTPUT | MUX_MODE0 ) /* (V5) lcd_pclk.lcd_pclk */ 0xec ( PIN_OUTPUT | MUX_MODE0 ) /* (R6) lcd_ac_bias_en.lcd_ac_bias_en */ 0xa0 ( PIN_OUTPUT | MUX_MODE0 ) /* (R1) lcd_data0.lcd_data0 */ 0xa4 ( PIN_OUTPUT | MUX_MODE0 ) /* (R2) lcd_data1.lcd_data1 */ 0xa8 ( PIN_OUTPUT | MUX_MODE0 ) /* (R3) lcd_data2.lcd_data2 */ 0xac ( PIN_OUTPUT | MUX_MODE0 ) /* (R4) lcd_data3.lcd_data3 */ 0xb0 ( PIN_OUTPUT | MUX_MODE0 ) /* (T1) lcd_data4.lcd_data4 */ 0xb4 ( PIN_OUTPUT | MUX_MODE0 ) /* (T2) lcd_data5.lcd_data5 */ 0xb8 ( PIN_OUTPUT | MUX_MODE0 ) /* (T3) lcd_data6.lcd_data6 */ 0xbc ( PIN_OUTPUT | MUX_MODE0 ) /* (T4) lcd_data7.lcd_data7 */ 0xc0 ( PIN_OUTPUT | MUX_MODE0 ) /* (U1) lcd_data8.lcd_data8 */ 0xc4 ( PIN_OUTPUT | MUX_MODE0 ) /* (U2) lcd_data9.lcd_data9 */ 0xc8 ( PIN_OUTPUT | MUX_MODE0 ) /* (U3) lcd_data10.lcd_data10 */ 0xcc ( PIN_OUTPUT | MUX_MODE0 ) /* (U4) lcd_data11.lcd_data11 */ 0xd0 ( PIN_OUTPUT | MUX_MODE0 ) /* (V2) lcd_data12.lcd_data12 */ 0xd4 ( PIN_OUTPUT | MUX_MODE0 ) /* (V3) lcd_data13.lcd_data13 */ 0xd8 ( PIN_OUTPUT | MUX_MODE0 ) /* (V4) lcd_data14.lcd_data14 */ 0xdc ( PIN_OUTPUT | MUX_MODE0 ) /* (T5) lcd_data15.lcd_data15 */ 0x3c ( PIN_OUTPUT | MUX_MODE1 ) /* (U13) gpmc_ad15.lcd_data16 */ 0x38 ( PIN_OUTPUT | MUX_MODE1 ) /* (V13) gpmc_ad14.lcd_data17 */ 0x34 ( PIN_OUTPUT | MUX_MODE1 ) /* (R12) gpmc_ad13.lcd_data18 */ 0x30 ( PIN_OUTPUT | MUX_MODE1 ) /* (T12) gpmc_ad12.lcd_data19 */ 0x2c ( PIN_OUTPUT | MUX_MODE1 ) /* (U12) gpmc_ad11.lcd_data20 */ 0x28 ( PIN_OUTPUT | MUX_MODE1 ) /* (T11) gpmc_ad10.lcd_data21 */ 0x24 ( PIN_OUTPUT | MUX_MODE1 ) /* (T10) gpmc_ad9.lcd_data22 */ 0x20 ( PIN_OUTPUT | MUX_MODE1 ) /* (U10) gpmc_ad8.lcd_data23 */ >; }; /* Optional sleep pin settings. Must manually enter values in the below skeleton. */ lcd_pins_sleep: lcd_pins_sleep { pinctrl-single,pins = < 0xe0 ( PIN_INPUT | MUX_MODE0 ) /* (U5) lcd_vsync.lcd_vsync */ 0xe4 ( PIN_INPUT | MUX_MODE0 ) /* (R5) lcd_hsync.lcd_hsync */ 0xe8 ( PIN_INPUT | MUX_MODE0 ) /* (V5) lcd_pclk.lcd_pclk */ 0xec ( PIN_INPUT | MUX_MODE0 ) /* (R6) lcd_ac_bias_en.lcd_ac_bias_en */ 0xa0 ( PIN_INPUT | MUX_MODE0 ) /* (R1) lcd_data0.lcd_data0 */ 0xa4 ( PIN_INPUT | MUX_MODE0 ) /* (R2) lcd_data1.lcd_data1 */ 0xa8 ( PIN_INPUT | MUX_MODE0 ) /* (R3) lcd_data2.lcd_data2 */ 0xac ( PIN_INPUT | MUX_MODE0 ) /* (R4) lcd_data3.lcd_data3 */ 0xb0 ( PIN_INPUT | MUX_MODE0 ) /* (T1) lcd_data4.lcd_data4 */ 0xb4 ( PIN_INPUT | MUX_MODE0 ) /* (T2) lcd_data5.lcd_data5 */ 0xb8 ( PIN_INPUT | MUX_MODE0 ) /* (T3) lcd_data6.lcd_data6 */ 0xbc ( PIN_INPUT | MUX_MODE0 ) /* (T4) lcd_data7.lcd_data7 */ 0xc0 ( PIN_INPUT | MUX_MODE0 ) /* (U1) lcd_data8.lcd_data8 */ 0xc4 ( PIN_INPUT | MUX_MODE0 ) /* (U2) lcd_data9.lcd_data9 */ 0xc8 ( PIN_INPUT | MUX_MODE0 ) /* (U3) lcd_data10.lcd_data10 */ 0xcc ( PIN_INPUT | MUX_MODE0 ) /* (U4) lcd_data11.lcd_data11 */ 0xd0 ( PIN_INPUT | MUX_MODE0 ) /* (V2) lcd_data12.lcd_data12 */ 0xd4 ( PIN_INPUT | MUX_MODE0 ) /* (V3) lcd_data13.lcd_data13 */ 0xd8 ( PIN_INPUT | MUX_MODE0 ) /* (V4) lcd_data14.lcd_data14 */ 0xdc ( PIN_INPUT | MUX_MODE0 ) /* (T5) lcd_data15.lcd_data15 */ 0x3c ( PIN_INPUT | MUX_MODE1 ) /* (U13) gpmc_ad15.lcd_data16 */ 0x38 ( PIN_INPUT | MUX_MODE1 ) /* (V13) gpmc_ad14.lcd_data17 */ 0x34 ( PIN_INPUT | MUX_MODE1 ) /* (R12) gpmc_ad13.lcd_data18 */ 0x30 ( PIN_INPUT | MUX_MODE1 ) /* (T12) gpmc_ad12.lcd_data19 */ 0x2c ( PIN_INPUT | MUX_MODE1 ) /* (U12) gpmc_ad11.lcd_data20 */ 0x28 ( PIN_INPUT | MUX_MODE1 ) /* (T11) gpmc_ad10.lcd_data21 */ 0x24 ( PIN_INPUT | MUX_MODE1 ) /* (T10) gpmc_ad9.lcd_data22 */ 0x20 ( PIN_INPUT | MUX_MODE1 ) /* (U10) gpmc_ad8.lcd_data23 */ >; }; spi1_pins_default: spi1_pins_default { pinctrl-single,pins = < 0x190 ( PIN_INPUT | MUX_MODE3 ) /* (A13) mcasp0_aclkx.spi1_sclk */ 0x194 ( PIN_INPUT | MUX_MODE3 ) /* (B13) mcasp0_fsx.spi1_d0 */ 0x198 ( PIN_INPUT | MUX_MODE3 ) /* (D12) mcasp0_axr0.spi1_d1 */ 0x19c ( PIN_OUTPUT | MUX_MODE3 ) /* (C12) mcasp0_ahclkr.spi1_cs0 */ >; }; /* Optional sleep pin settings. Must manually enter values in the below skeleton. */ spi1_pins_sleep: spi1_pins_sleep { pinctrl-single,pins = < 0x190 ( PIN_INPUT | MUX_MODE3 ) /* (A13) mcasp0_aclkx.spi1_sclk */ 0x194 ( PIN_INPUT | MUX_MODE3 ) /* (B13) mcasp0_fsx.spi1_d0 */ 0x198 ( PIN_INPUT | MUX_MODE3 ) /* (D12) mcasp0_axr0.spi1_d1 */ 0x19c ( PIN_INPUT | MUX_MODE3 ) /* (C12) mcasp0_ahclkr.spi1_cs0 */ >; }; goodix_pins: pinmux_goodix_pins { pinctrl-single,pins = < 0x74 ( PIN_INPUT | MUX_MODE7 ) /* (U17) gpmc_wpn.gpio0[31] */ 0x88 ( PIN_INPUT | MUX_MODE7 ) /* (T13) gpmc_csn3.gpio2[0] */ >; }; nxp_hdmi_bonelt_off_pins: nxp_hdmi_bonelt_off_pins { pinctrl-single,pins = < 0x1b0 0x03 /* xdma_event_intr0, OMAP_MUX_MODE3 | AM33XX_PIN_OUTPUT */ >; }; mcasp0_pins: mcasp0_pins { pinctrl-single,pins = < /* 0x1ac (PIN_INPUT_PULLUP | MUX_MODE0) /* mcasp0_ahclkx.mcasp0_ahclkx */ /* 0x19c (PIN_OUTPUT_PULLDOWN | MUX_MODE2) /* mcasp0_ahclkr.mcasp0_axr2 */ /* 0x194 (PIN_OUTPUT_PULLUP | MUX_MODE0) /* mcasp0_fsx.mcasp0_fsx */ /* 0x190 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* mcasp0_aclkx.mcasp0_aclkx */ /* 0x06c (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a11.GPIO1_27 */ >; }; mcasp0_pins_sleep: mcasp0_pins_sleep { pinctrl-single,pins = < /* 0x1ac (PIN_INPUT_PULLDOWN | MUX_MODE7) /* mcasp0_ahclkx.mcasp0_ahclkx */ /* 0x19c (PIN_INPUT_PULLDOWN | MUX_MODE7) /* mcasp0_ahclkr.mcasp0_axr2 */ /* 0x194 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* mcasp0_fsx.mcasp0_fsx */ /* 0x190 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* mcasp0_aclkx.mcasp0_aclkx */ /* 0x06c (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_a11.GPIO1_27 */ >; }; /* WL18xx WiFi */ wlan_pins_default: pinmux_wlan_pins_default { pinctrl-single,pins = < 0x40 (PIN_INPUT | MUX_MODE7) /* gpmc_a0.gpio1_16 (WL_INT) */ 0x44 (PIN_OUTPUT_PULLDOWN | MUX_MODE7 ) /* gpmc_a1.gpio1[17] (EN_WLAN) */ /*0x48 (PIN_INPUT | MUX_MODE7 ) /* gpmc_a2.gpio1[18] (DEBUG_EN) in gpio1*/ 0x64 ( PIN_OUTPUT_PULLDOWN | MUX_MODE7 ) /* (U16) gpmc_a9.gpio1[25] Bluetooth EN */ >; }; wlan_pins_sleep: pinmux_wlan_pins_sleep { pinctrl-single,pins = < 0x40 (PIN_INPUT | MUX_MODE7) /* gpmc_a0.gpio1_16 (WL_INT) */ 0x44 (PIN_OUTPUT_PULLDOWN | MUX_MODE7 ) /* gpmc_a1.gpio1[17] (EN_WLAN) */ /*0x48 (PIN_INPUT | MUX_MODE7 ) /* gpmc_a2.gpio1[18] (DEBUG_EN) in gpio1*/ 0x64 ( PIN_OUTPUT_PULLUP | MUX_MODE7 ) /* (U16) gpmc_a9.gpio1[25] Bluetooth EN */ >; }; gpio0_pins_default: gpio0_pins_default { pinctrl-single,pins = < 0x1b0 ( PIN_INPUT_PULLDOWN | MUX_MODE7 ) /* (A15) xdma_event_intr0.gpio0[19] Level Translator*/ 0x124 ( PIN_INPUT | MUX_MODE7 ) /* (K16) gmii1_txd1.gpio0[21] Button*/ 0x128 ( PIN_OUTPUT | MUX_MODE7 ) /* (K17) gmii1_txd0.gpio0[28] Button*/ 0x144 ( PIN_INPUT | MUX_MODE7 ) /* (H18) rmii1_refclk.gpio0[29] Not Connected */ 0x70 ( PIN_INPUT | MUX_MODE7 ) /* (T17) gpmc_wait0.gpio0[30] GPOut*/ >; }; gpio1_pins_default: gpio1_pins_default { pinctrl-single,pins = < /*0x40 ( PIN_INPUT | MUX_MODE7 ) /* (R13) gpmc_a0.gpio1[16] Wlan_int*/ /*0x44 ( PIN_INPUT | MUX_MODE7 ) /* (V14) gpmc_a1.gpio1[17] Wlan_en*/ 0x48 ( PIN_INPUT | MUX_MODE7 ) /* (U14) gpmc_a2.gpio1[18] Wifi debug en*/ /*0x50 ( PIN_INPUT | MUX_MODE7 ) /* (R14) gpmc_a4.gpio1[20] eMMC reset*/ /*0x54 ( PIN_INPUT | MUX_MODE7 ) /* (V15) gpmc_a5.gpio1[21] LCD_reset*/ 0x58 ( PIN_INPUT | MUX_MODE7 ) /* (U15) gpmc_a6.gpio1[22] test point T19*/ 0x5c ( PIN_INPUT | MUX_MODE7 ) /* (T15) gpmc_a7.gpio1[23] NC*/ 0x60 ( PIN_INPUT | MUX_MODE7 ) /* (V16) gpmc_a8.gpio1[24] NC*/ /*0x64 ( PIN_INPUT | MUX_MODE7 ) /* (U16) gpmc_a9.gpio1[25] Bluetooth EN*/ 0x68 ( PIN_INPUT_PULLUP | MUX_MODE7 ) /* (T16) gpmc_a10.gpio1[26] HW Version - LSB*/ 0x6c ( PIN_INPUT_PULLUP | MUX_MODE7 ) /* (V17) gpmc_a11.gpio1[27] HW Version*/ 0x78 ( PIN_INPUT_PULLUP | MUX_MODE7 ) /* (U18) gpmc_be1n.gpio1[28] HW Version*/ 0x7c ( PIN_INPUT_PULLUP | MUX_MODE7 ) /* (V6) gpmc_csn0.gpio1[29] HW Version - MSB*/ >; }; gpio2_pins_default: gpio2_pins_default { pinctrl-single,pins = < 0x88 ( PIN_INPUT | MUX_MODE7 ) /* (T13) gpmc_csn3.gpio2[0] Touch Reset */ 0x8c ( PIN_INPUT | MUX_MODE7 ) /* (V12) gpmc_clk.gpio2[1] Testpoint T22 */ 0x94 ( PIN_INPUT | MUX_MODE7 ) /* (T7) gpmc_oen_ren.gpio2[3] RFID_EN*/ 0x98 ( PIN_INPUT | MUX_MODE7 ) /* (U6) gpmc_wen.gpio2[4] RFID SS*/ 0x9c ( PIN_INPUT | MUX_MODE7 ) /* (T6) gpmc_be0n_cle.gpio2[5] testpoint T31 */ 0x13c ( PIN_INPUT | MUX_MODE7 ) /* (L15) gmii1_rxd1.gpio2[20] 3V3B Enable*/ 0x140 ( PIN_INPUT | MUX_MODE7 ) /* (M16) gmii1_rxd0.gpio2[21] LED1*/ >; }; gpio3_pins_default: gpio3_pins_default { pinctrl-single,pins = < 0x108 ( PIN_INPUT | MUX_MODE7 ) /* (H16) gmii1_col.gpio3[0] Testpoint T16 */ 0x10c ( PIN_INPUT | MUX_MODE7 ) /* (H17) gmii1_crs.gpio3[1] Testpoint T15*/ 0x110 ( PIN_INPUT | MUX_MODE7 ) /* (J15) gmii1_rxer.gpio3[2] Testpoint T17*/ 0x114 ( PIN_INPUT | MUX_MODE7 ) /* (J16) gmii1_txen.gpio3[3] Testpoint T13*/ 0x118 ( PIN_OUTPUT | MUX_MODE7 ) /* (J17) gmii1_rxdv.gpio3[4] KV2 Boot0*/ 0x12c ( PIN_INPUT | MUX_MODE7 ) /* (K18) gmii1_txclk.gpio3[9] KV2 Reset*/ 0x130 ( PIN_OUTPUT | MUX_MODE7 ) /* (L18) gmii1_rxclk.gpio3[10] LED2*/ >; }; uart4_kv2_pins_default: uart4_kv2_pins_default { pinctrl-single,pins = < 0x11c ( PIN_INPUT_PULLDOWN | MUX_MODE3 ) /* (J18) gmii1_txd3.uart4_rxd */ 0x120 ( PIN_OUTPUT | MUX_MODE3 ) /* (K15) gmii1_txd2.uart4_txd */ >; }; uart3_kv2debug_pins_default: uart3_kv2debug_pins_default { pinctrl-single,pins = < 0x134 ( PIN_INPUT_PULLDOWN | MUX_MODE1 ) /* (L17) gmii1_rxd3.uart3_rxd */ 0x138 ( PIN_OUTPUT | MUX_MODE1 ) /* (L16) gmii1_rxd2.uart3_txd */ >; }; uart2_wifi_debug_pins_default: uart2_wifi_debug_pins_default { pinctrl-single,pins = < 0x150 ( PIN_INPUT_PULLDOWN | MUX_MODE1 ) /* (A17) spi0_sclk.uart2_rxd */ 0x154 ( PIN_OUTPUT | MUX_MODE1 ) /* (B17) spi0_d0.uart2_txd */ >; }; uart1_bt_pins_default: uart1_bt_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 */ 0x178 ( PIN_INPUT | MUX_MODE0 ) /* (D18) uart1_ctsn.uart1_ctsn */ 0x17c ( PIN_OUTPUT | MUX_MODE0 ) /* (D17) uart1_rtsn.uart1_rtsn */ >; }; }; &lcdc { pinctrl-names = "default", "sleep"; pinctrl-0 = <&lcd_pins_default>; pinctrl-1 = <&lcd_pins_sleep>; status = "okay"; debug = <3>; /* avoid stupid warning */ #address-cells = <1>; #size-cells = <1>; panel-info { ac-bias = <255>; ac-bias-intrpt = <0>; dma-burst-sz = <16>; bpp = <16>; fdd = <0x80>; tft-alt-mode = <0>; stn-565-mode = <0>; mono-8bit-mode = <0>; sync-edge = <0>; sync-ctrl = <1>; raster-order = <0>; fifo-th = <0>; }; display-timings { /* Cordial CT040BLP32 */ 480x800 { hactive = <480>; vactive = <800>; hback-porch = <5>; hfront-porch = <5>; hsync-len = <5>; vback-porch = <5>; vfront-porch = <5>; vsync-len = <5>; clock-frequency = <16600000>; hsync-active = <0>; vsync-active = <0>; }; }; }; &spi1 { status = "okay"; pinctrl-names = "default", "sleep"; pinctrl-0 = <&spi1_pins_default &spi1_pins_sleep>; debug = <3>; spi-display { compatible = "omapdss,kuvee,cordial-spi"; spi-max-frequency = <500000>; reg = <0>; /* Chip select 0 */ reset-gpios = <&gpio1 21 0>; /* lcd reset */ debug = <3>; }; }; &mcasp0 { pinctrl-names = "default", "sleep"; pinctrl-0 = <&mcasp0_pins>; pinctrl-1 = <&mcasp0_pins_sleep>; status = "disabled"; op-mode = <0>; /* MCASP_IIS_MODE */ tdm-slots = <2>; serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */ 0 0 1 0 >; tx-num-evt = <1>; rx-num-evt = <1>; }; &tps { /delete-property/ ti,pmic-shutdown-controller; backlight { isel = <1>; /* 1 - ISET1, 2 ISET2 */ fdim = <100>; /* TPS65217_BL_FDIM_100HZ */ default-brightness = <50>; }; }; &rtc { ext-clk-src; }; / { clk_mcasp0_fixed: clk_mcasp0_fixed { #clock-cells = <0>; compatible = "fixed-clock"; clock-frequency = <24576000>; }; clk_mcasp0: clk_mcasp0 { #clock-cells = <0>; compatible = "gpio-gate-clock"; clocks = <&clk_mcasp0_fixed>; enable-gpios = <&gpio1 27 0>; /* BeagleBone Black Clk enable on GPIO1_27 */ }; hdmi_audio: hdmi_audio@0 { compatible = "linux,hdmi-audio"; status = "disabled"; }; sound { status = "disabled"; compatible = "ti,beaglebone-black-audio"; ti,model = "TI BeagleBone Black"; ti,audio-codec = <&hdmi_audio>; ti,mcasp-controller = <&mcasp0>; ti,audio-routing = "HDMI Out", "TX"; clocks = <&clk_mcasp0>; clock-names = "mclk"; }; };
