device tree binding documentation outdated
Russell King - ARM Linux
linux at arm.linux.org.uk
Thu Sep 26 19:29:07 EDT 2013
On Thu, Sep 26, 2013 at 06:10:21PM -0500, Matt Sealey wrote:
> Thankfully, you ran into this.. I am vindicated in my objections to
> the initial patches, which were summarily ignored. This is not why
> preprocessing device trees is a good idea, in fact it is the very
> definition of the worst possible usage for it. It doesn't make writing
> device trees easier - it took me longer to port pinctrl in the tree I
> had to the new binding than it did to write the ENTIRE initial tree
> with the old pinctrl binding in the first place.
Yes. I've been at DT for over six hours now, and all I've been able to
sort out is getting the two USB and SD cards working. Honestly, I feel
totally worn out now through the amount of cross correlation that I'm
having to do to ensure I'm getting this stuff correct.
As Rabeeh uses the old macros from the header file, I'm having to look
those up. Then I'm having to find the corresponding entry in the
-pinfunc.h header file. Then I'm having to check whether the group
of pinctrl settings are correct - and if they are, use them. If they
aren't, then wonder what to do about it.
I've taken the time to convert three directly (the sdhci card detect
and write protect signals) and the OTG ID signal. The SPDIF I've
listed in the dts file I just grabbed from the imx6dl.dtsi file (the
one in there is paired with spdif in.)
There's the HDMI, ethernet and SPDIF out properly still to go.
I haven't sorted out a rootfs for this yet, so it fails trying to find
that. (Rabeeh's kernel contained an initramfs buildroot image - it
might be useful to find some way to load that as a separate image -
does appended DT support that?)
Anyway, attached are the DTS and current boot log.
-------------- next part --------------
/dts-v1/;
#include "imx6dl.dtsi"
/ {
model = "Solid-Run Cubox-i DL/Solo Board";
compatible = "solid-run,cubox-i", "fsl,imx6dl";
regulators {
compatible = "simple-bus";
reg_3p3v: 3p3v {
compatible = "regulator-fixed";
regulator-name = "3P3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
reg_usb_otg_vbus: usb_otg_vbus {
compatible = "regulator-fixed";
regulator-name = "usb_otg_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio3 22 0>;
enable-active-high;
};
reg_usb_h1_vbus: usb_h1_vbus {
compatible = "regulator-fixed";
regulator-name = "usb_h1_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio1 0 0>;
enable-active-high;
};
};
};
&can1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_flexcan1_2>;
status = "okay";
};
&i2c1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1_1>;
/*
* Not fitted on developer board
status = "okay";
rtc: pcf8523 at 68 {
compatible = "nxp,pcf8523";
reg = <0x68>;
};
*/
};
&i2c2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c2_2>;
status = "okay";
/* HDMI @0x50 */
};
&iomuxc {
pinctrl_spdif_2_out_only: spdifgrp-3 {
fsl,pins = <
MX6QDL_PAD_GPIO_17__SPDIF_OUT 0x1b0b0
>;
};
usbhc2 {
pinctrl_usdhc2_cd_wp: usdhc2_cd_wp {
fsl,pins = <
MX6QDL_PAD_GPIO_4__SD2_CD_B 0x1f059
MX6QDL_PAD_GPIO_2__SD2_WP 0x1f059
>;
};
};
usbotg {
pinctrl_usbotg_cubox: usbotggrp-3 {
/*
* Originally pinctrl_usbotg_2, but we want it to
* be pulled down for fixed host connection.
*/
fsl,pins = <
MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x13059
>;
};
};
};
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart1_1>;
status = "okay";
};
&usbotg {
vbus-supply = <®_usb_otg_vbus>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usbotg_cubox>;
status = "okay";
};
&usbh1 {
vbus-supply = <®_usb_h1_vbus>;
status = "okay";
};
&usdhc2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc2_2 &pinctrl_usdhc2_cd_wp>;
vmmc-supply = <®_3p3v>;
cd-gpios = <&gpio1 4 0>;
/*
* Cubox-i dev board doesn't have this wired
* but comments suggest real hardware does.
wp-gpios = <&gpio1 2 0>;
*/
status = "okay";
};
/* experimental stuff */
/* USDHC1 - Connected to BRCM Wifi/BT/FM */
&usdhc1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc1_2>;
status = "okay";
};
/* SPDIF out */
/* CAN1 */
/* CCM */
/* ECSPI2 */
/* I2C1 */
/* I2C2 - HDMI DDC */
/* I2C3 */
&i2c3 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c3_1>;
status = "okay";
};
/* PWM */
/* UART2 */
/* USB OC pin */
/* USDHC2 */
/* USDHC3 */
&usdhc3 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc3_1>;
status = "disabled";
};
/* USDHC4 */
&usdhc4 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc4_1>;
status = "disabled";
};
#if 0
&fec {
pintctrl-names = "default";
pinctrl-0 = <&pinctrl_enet_1>;
phy-mode = "rgmii";
status = "okay";
};
#endif
-------------- next part --------------
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0x0
Linux version 3.12.0-rc1+ (rmk at rmk-PC.arm.linux.org.uk) (gcc version 4.5.4 (GCC) ) #7 SMP Thu Sep 26 19:28:35 BST 2013
CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: Freescale i.MX6 Quad/DualLite (Device Tree), model: Solid-Run Cubox-i DL/Solo Board
Memory policy: ECC disabled, Data cache writealloc
PERCPU: Embedded 7 pages/cpu @80cc0000 s7488 r8192 d12992 u32768
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 130048
Kernel command line: console=ttymxc0,115200 video=mxcfb0:dev=hdmi,1920x1080M at 60,if=RGB24,bpp=32 rootdelay=3
PID hash table entries: 2048 (order: 1, 8192 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 510764K/524288K available (6007K kernel code, 287K rwdata, 1864K rodata, 323K init, 375K bss, 13524K reserved)
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xa0800000 - 0xff000000 (1512 MB)
lowmem : 0x80000000 - 0xa0000000 ( 512 MB)
modules : 0x7f000000 - 0x80000000 ( 16 MB)
.text : 0x80008000 - 0x807b7ec8 (7872 kB)
.init : 0x807b8000 - 0x80808d40 ( 324 kB)
.data : 0x8080a000 - 0x80851d20 ( 288 kB)
.bss : 0x80851d28 - 0x808afa6c ( 376 kB)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Hierarchical RCU implementation.
RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1.
NR_IRQS:16 nr_irqs:16 16
L310 cache controller enabled
l2x0: 16 ways, CACHE_ID 0x410000c8, AUX_CTRL 0x32050000, Cache size: 512 kB
sched_clock: 32 bits at 66MHz, resolution 15ns, wraps every 65075ms
CPU identified as i.MX6DL, silicon rev 1.1
Console: colour dummy device 80x30
Calibrating delay loop... 1581.05 BogoMIPS (lpj=7905280)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
Setting up static identity map for 0x805e37f8 - 0x805e3868
Brought up 1 CPUs
SMP: Total of 1 processors activated.
CPU: All CPU(s) started in SVC mode.
devtmpfs: initialized
VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
pinctrl core: initialized pinctrl subsystem
regulator-dummy: no parameters
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
syscon 20c8000.anatop: regmap [mem 0x020c8000-0x020c8fff] registered
vdd1p1: 800 <--> 1375 mV at 1100 mV
vdd3p0: 2800 <--> 3150 mV at 3000 mV
vdd2p5: 2000 <--> 2750 mV at 2400 mV
cpu: 725 <--> 1450 mV at 1150 mV
vddpu: 725 <--> 1450 mV
vddsoc: 725 <--> 1450 mV at 1200 mV
syscon 20e0000.iomuxc-gpr: regmap [mem 0x020e0000-0x020e0037] registered
syscon 21bc000.ocotp: regmap [mem 0x021bc000-0x021bffff] registered
hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
hw-breakpoint: maximum watchpoint size is 4 bytes.
imx6dl-pinctrl 20e0000.iomuxc: no groups defined in /soc/aips-bus at 02000000/iomuxc at 020e0000/spdifgrp-3
imx6dl-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver
bio: create slab <bio-0> at 0
mxs-dma 110000.dma-apbh: initialized
3P3V: 3300 mV
usb_otg_vbus: 5000 mV
usb_h1_vbus: 5000 mV
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
i2c i2c-1: IMX I2C adapter registered
i2c i2c-2: IMX I2C adapter registered
Linux video capture interface: v2.00
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti at linux.it>
PTP clock support registered
Advanced Linux Sound Architecture Driver Initialized.
Switched to clocksource mxc_timer1
cfg80211: Calling CRDA to update world regulatory domain
NET: Registered protocol family 2
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP: reno registered
UDP hash table entries: 256 (order: 1, 8192 bytes)
UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available
VFS: Disk quotas dquot_6.5.2
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
NFS: Registering the id_resolver key type
Key type id_resolver registered
Key type id_legacy registered
jffs2: version 2.2. (NAND) ? 2001-2006 Red Hat, Inc.
fuse init (API version 7.22)
msgmni has been set to 997
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
imx-weim 21b8000.weim: Driver registered.
imx-sdma 20ec000.sdma: initialized
Serial: IMX driver
2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 58, base_baud = 5000000) is a IMX
console [ttymxc0] enabled
serial: Freescale lpuart driver
[drm] Initialized drm 1.1.0 20060810
brd: module loaded
loop: module loaded
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-mxc: Freescale On-Chip EHCI Host driver
usbcore: registered new interface driver usb-storage
imx_usb 2184000.usb: usbmisc init failed, ret=-517
platform 2184000.usb: Driver imx_usb requests probe deferral
imx_usb 2184200.usb: usbmisc init failed, ret=-517
platform 2184200.usb: Driver imx_usb requests probe deferral
mousedev: PS/2 mouse device common for all mice
snvs_rtc 20cc034.snvs-rtc-lp: rtc core: registered 20cc034.snvs-rtc-lp as rtc0
i2c /dev entries driver
imx2-wdt 20bc000.wdog: IMX2+ Watchdog Timer enabled. timeout=60s (nowayout=0)
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
mmc0: no vqmmc regulator found
mmc0: no vmmc regulator found
mmc0: SDHCI controller on 2190000.usdhc [2190000.usdhc] using ADMA
mmc1: no vqmmc regulator found
mmc1: SDHCI controller on 2194000.usdhc [2194000.usdhc] using ADMA
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
[drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[drm] No driver support for vblank timestamp query.
[drm] Initialized imx-drm 1.0.0 20120507 on minor 0
imx-ipuv3 2400000.ipu: IPUv3H probed
imx-ipuv3-crtc imx-ipuv3-crtc.0: adding crtc failed with -16.
imx-ipuv3-crtc: probe of imx-ipuv3-crtc.0 failed with error -16
imx-ipuv3-crtc imx-ipuv3-crtc.1: adding crtc failed with -16.
imx-ipuv3-crtc: probe of imx-ipuv3-crtc.1 failed with error -16
TCP: cubic registered
NET: Registered protocol family 10
sit: IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
Key type dns_resolver registered
ci_hdrc ci_hdrc.0: doesn't support gadget
ci_hdrc ci_hdrc.0: EHCI Host Controller
ci_hdrc ci_hdrc.0: new USB bus registered, assigned bus number 1
ci_hdrc ci_hdrc.0: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
ci_hdrc ci_hdrc.1: doesn't support gadget
ci_hdrc ci_hdrc.1: EHCI Host Controller
ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 2
ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
snvs_rtc 20cc034.snvs-rtc-lp: setting system clock to 1970-01-01 00:00:00 UTC (0)
imx-drm imx-drm: No connectors reported connected with modes
[drm] Cannot find any crtc or sizes - going 1024x768
Console: switching to colour frame buffer device 128x48
imx-drm imx-drm: fb0: frame buffer device
imx-drm imx-drm: registered panic notifier
ALSA device list:
No soundcards found.
Waiting 3 sec before mounting root device...
mmc1: host does not support reading read-only switch. assuming write-enable.
mmc1: new high speed SDHC card at address 0002
mmcblk0: mmc1:0002 00000 3.70 GiB
mmcblk0: p1
usb 2-1: new full-speed USB device number 2 using ci_hdrc
usb-storage 2-1:1.0: USB Mass Storage device detected
usb-storage 2-1:1.0: Quirks match for vid 1370 pid 6828: 20
scsi0 : usb-storage 2-1:1.0
scsi 0:0:0:0: Direct-Access SWISSBIT Victorinox 1.89 PQ: 0 ANSI: 2
ready
sd 0:0:0:0: [sda] 126720 512-byte logical blocks: (64.8 MB/61.8 MiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] No Caching mode page found
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] No Caching mode page found
sd 0:0:0:0: [sda] Assuming drive cache: write through
sda:
sd 0:0:0:0: [sda] No Caching mode page found
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] Attached SCSI removable disk
VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
b300 3880960 mmcblk0 driver: mmcblk
b301 130048 mmcblk0p1 00000000-01
0800 63360 sda driver: sd
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
drm_kms_helper: panic occurred, switching back to text console
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