[PATCH 0/3] ARM: dts: Changes for Gumstix Pepper dts

[PATCH 0/3] ARM: dts: Changes for Gumstix Pepper dts

[Arun Bharadwaj]

These 3 patches are included to fix the following issues
with pepper device tree source. The patches are based against
linux-omap/master.

Adam YH Lee (2):
  ARM: dts: Correct audio input route & set mic bias
  ARM: dts: configure regulators for Gumstix Pepper

Arun Bharadwaj (1):
  ARM: dts: Fix frequency scaling on Gumstix Pepper.

 arch/arm/boot/dts/am335x-pepper.dts | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

-- 
2.1.4

[PATCH 1/3] ARM: dts: Correct audio input route & set mic bias

[Arun Bharadwaj]

From: Adam YH Lee <adam.yh.lee@gmail.com>

Audio-in was incorrectly routed to Line In. It should be Mic3L as per
schematic.

Using mic-bias voltage at 2.0v (<0x1>) does not work for some reason. There
is no voltage seen on micbias (R127). Mic-bias voltage of 2.5v (<0x2>) works.
I see voltage of 2.475v across GND and micbias.

With these changes, I can record audio with a pair of proliferate TRRS earbuds.

Signed-off-by: Ash Charles <ashcharles@gmail.com>
---
 arch/arm/boot/dts/am335x-pepper.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/am335x-pepper.dts b/arch/arm/boot/dts/am335x-pepper.dts
index 0d35ab6..473d8ee 100644
--- a/arch/arm/boot/dts/am335x-pepper.dts
+++ b/arch/arm/boot/dts/am335x-pepper.dts
@@ -74,6 +74,7 @@
 	audio_codec: tlv320aic3106 at 1b {
 		compatible = "ti,tlv320aic3106";
 		reg = <0x1b>;
+		ai3x-micbias-vg = <0x2>;
 	};
 
 	accel: lis331dlh at 1d {
@@ -153,7 +154,7 @@
 	ti,audio-routing =
 		"Headphone Jack",	"HPLOUT",
 		"Headphone Jack",	"HPROUT",
-		"LINE1L",		"Line In";
+		"MIC3L",		"Mic3L Switch";
 };
 
 &mcasp0 {
-- 
2.1.4

[PATCH 1/3] ARM: dts: Correct audio input route & set mic bias

[Tony Lindgren]

* Arun Bharadwaj <arun@gumstix.com> [150604 11:10]:
> From: Adam YH Lee <adam.yh.lee@gmail.com>
> 
> Audio-in was incorrectly routed to Line In. It should be Mic3L as per
> schematic.
> 
> Using mic-bias voltage at 2.0v (<0x1>) does not work for some reason. There
> is no voltage seen on micbias (R127). Mic-bias voltage of 2.5v (<0x2>) works.
> I see voltage of 2.475v across GND and micbias.
> 
> With these changes, I can record audio with a pair of proliferate TRRS earbuds.
> 
> Signed-off-by: Ash Charles <ashcharles@gmail.com>

Can you please repost this with after checking From
and Signed-off-by?

Regards,

Tony

> ---
>  arch/arm/boot/dts/am335x-pepper.dts | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/am335x-pepper.dts b/arch/arm/boot/dts/am335x-pepper.dts
> index 0d35ab6..473d8ee 100644
> --- a/arch/arm/boot/dts/am335x-pepper.dts
> +++ b/arch/arm/boot/dts/am335x-pepper.dts
> @@ -74,6 +74,7 @@
>  	audio_codec: tlv320aic3106 at 1b {
>  		compatible = "ti,tlv320aic3106";
>  		reg = <0x1b>;
> +		ai3x-micbias-vg = <0x2>;
>  	};
>  
>  	accel: lis331dlh at 1d {
> @@ -153,7 +154,7 @@
>  	ti,audio-routing =
>  		"Headphone Jack",	"HPLOUT",
>  		"Headphone Jack",	"HPROUT",
> -		"LINE1L",		"Line In";
> +		"MIC3L",		"Mic3L Switch";
>  };
>  
>  &mcasp0 {
> -- 
> 2.1.4
> 

[PATCH 2/3] ARM: dts: configure regulators for Gumstix Pepper

[Arun Bharadwaj]

From: Adam YH Lee <adam.yh.lee@gmail.com>

Boot process is halting in midway because some of the necessary voltage
regulators are deemed unused and subsequently powered off, leading to
a completely unresponsive system.

Most of the device nodes had correct voltage regulator attachments.
Yet these nodes had to set stricter enforcement on them through
'regulator-boot-on' and 'regulator-always-on' to function correctly.

Signed-off-by: Ash Charles <ashcharles@gmail.com>
---
 arch/arm/boot/dts/am335x-pepper.dts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm/boot/dts/am335x-pepper.dts b/arch/arm/boot/dts/am335x-pepper.dts
index 473d8ee..99f855d 100644
--- a/arch/arm/boot/dts/am335x-pepper.dts
+++ b/arch/arm/boot/dts/am335x-pepper.dts
@@ -415,6 +415,7 @@
 
 &v3v3c_reg {
 	regulator-name = "v3v3c_reg";
+	regulator-boot-on;
 	regulator-min-microvolt = <3300000>;
 	regulator-max-microvolt = <3300000>;
 	vin-supply = <&vbat>;
@@ -439,6 +440,8 @@
 	regulators {
 		dcdc1_reg: regulator at 0 {
 			/* VDD_1V8 system supply */
+			regulator-name = "vdds_dpr";
+			regulator-always-on;
 		};
 
 		dcdc2_reg: regulator at 1 {
@@ -447,6 +450,7 @@
 			regulator-min-microvolt = <925000>;
 			regulator-max-microvolt = <1325000>;
 			regulator-boot-on;
+			regulator-always-on;
 		};
 
 		dcdc3_reg: regulator at 2 {
@@ -455,25 +459,34 @@
 			regulator-min-microvolt = <925000>;
 			regulator-max-microvolt = <1150000>;
 			regulator-boot-on;
+			regulator-always-on;
 		};
 
 		ldo1_reg: regulator at 3 {
 			/* VRTC 1.8V always-on supply */
+			regulator-name = "vrtc,vdds";
 			regulator-always-on;
 		};
 
 		ldo2_reg: regulator at 4 {
 			/* 3.3V rail */
+			regulator-name = "vdd_3v3aux";
+			regulator-always-on;
 		};
 
 		ldo3_reg: regulator at 5 {
 			/* VDD_3V3A 3.3V rail */
+			regulator-name = "vdd_3v3a";
 			regulator-min-microvolt = <3300000>;
 			regulator-max-microvolt = <3300000>;
+			regulator-boot-on;
+			regulator-always-on;
 		};
 
 		ldo4_reg: regulator at 6 {
 			/* VDD_3V3B 3.3V rail */
+			regulator-name = "vdd_3v3b";
+			regulator-always-on;
 		};
 	};
 };
-- 
2.1.4

[PATCH 2/3] ARM: dts: configure regulators for Gumstix Pepper

[Tony Lindgren]

* Arun Bharadwaj <arun@gumstix.com> [150604 11:10]:
> From: Adam YH Lee <adam.yh.lee@gmail.com>
> 
> Boot process is halting in midway because some of the necessary voltage
> regulators are deemed unused and subsequently powered off, leading to
> a completely unresponsive system.

OK that needs to be fixed for v4.2-rc series.
 
> Most of the device nodes had correct voltage regulator attachments.
> Yet these nodes had to set stricter enforcement on them through
> 'regulator-boot-on' and 'regulator-always-on' to function correctly.

That's a lot of regulators marked as regulator-always-on. Could
you please update the description what consumers are using them
so we know why they are all needed always-on?
 
> Signed-off-by: Ash Charles <ashcharles@gmail.com>

>From Adam, sent by Arun, signed by Ash? Can you please check
that too.

Regards,

Tony

[PATCH 2/3] ARM: dts: configure regulators for Gumstix Pepper

[Ash Charles]

On Sun, Jun 28, 2015 at 11:47 PM, Tony Lindgren <tony@atomide.com> wrote:
>> Signed-off-by: Ash Charles <ashcharles@gmail.com>
>
> From Adam, sent by Arun, signed by Ash? Can you please check
> that too.
I reviewed Adam's original patch internally at Gumstix and my
Signed-off-by got carried along.  In future, would an 'Acked-by' from
me be more appropriate?

--Ash

[PATCH 2/3] ARM: dts: configure regulators for Gumstix Pepper

[Tony Lindgren]

* Ash Charles <ashcharles@gmail.com> [150702 11:37]:
> On Sun, Jun 28, 2015 at 11:47 PM, Tony Lindgren <tony@atomide.com> wrote:
> >> Signed-off-by: Ash Charles <ashcharles@gmail.com>
> >
> > From Adam, sent by Arun, signed by Ash? Can you please check
> > that too.
> I reviewed Adam's original patch internally at Gumstix and my
> Signed-off-by got carried along.  In future, would an 'Acked-by' from
> me be more appropriate?

Yes Acked-by or Reviewed-by if you did not make changes to the patch.

Regards,

Tony

[PATCH 3/3] ARM: dts: Fix frequency scaling on Gumstix Pepper.

[Arun Bharadwaj]

The device tree for Gumstix Pepper has DCDC2 and
DCDC3 correctly labelled but the upper limit values
are wrong. The confusion is due to the hardware
quirk where the DCDC2 and DCDC3 wires are flipped
in Pepper.

Signed-off-by: Arun Bharadwaj <arun@gumstix.com>
---
 arch/arm/boot/dts/am335x-pepper.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/am335x-pepper.dts b/arch/arm/boot/dts/am335x-pepper.dts
index 99f855d..37b95f6 100644
--- a/arch/arm/boot/dts/am335x-pepper.dts
+++ b/arch/arm/boot/dts/am335x-pepper.dts
@@ -448,7 +448,7 @@
 			/* VDD_CORE voltage limits 0.95V - 1.26V with +/-4% tolerance */
 			regulator-name = "vdd_core";
 			regulator-min-microvolt = <925000>;
-			regulator-max-microvolt = <1325000>;
+			regulator-max-microvolt = <1150000>;
 			regulator-boot-on;
 			regulator-always-on;
 		};
@@ -457,7 +457,7 @@
 			/* VDD_MPU voltage limits 0.95V - 1.1V with +/-4% tolerance */
 			regulator-name = "vdd_mpu";
 			regulator-min-microvolt = <925000>;
-			regulator-max-microvolt = <1150000>;
+			regulator-max-microvolt = <1325000>;
 			regulator-boot-on;
 			regulator-always-on;
 		};
-- 
2.1.4

[PATCH 3/3] ARM: dts: Fix frequency scaling on Gumstix Pepper.

[Ash Charles]

This works well for me--cpufreq seems much happier.

Tested-by: Ash Charles <ashcharles@gmail.com>

On Thu, Jun 4, 2015 at 11:08 AM, Arun Bharadwaj <arun@gumstix.com> wrote:
> The device tree for Gumstix Pepper has DCDC2 and
> DCDC3 correctly labelled but the upper limit values
> are wrong. The confusion is due to the hardware
> quirk where the DCDC2 and DCDC3 wires are flipped
> in Pepper.
>
> Signed-off-by: Arun Bharadwaj <arun@gumstix.com>
> ---
>  arch/arm/boot/dts/am335x-pepper.dts | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/boot/dts/am335x-pepper.dts b/arch/arm/boot/dts/am335x-pepper.dts
> index 99f855d..37b95f6 100644
> --- a/arch/arm/boot/dts/am335x-pepper.dts
> +++ b/arch/arm/boot/dts/am335x-pepper.dts
> @@ -448,7 +448,7 @@
>                         /* VDD_CORE voltage limits 0.95V - 1.26V with +/-4% tolerance */
>                         regulator-name = "vdd_core";
>                         regulator-min-microvolt = <925000>;
> -                       regulator-max-microvolt = <1325000>;
> +                       regulator-max-microvolt = <1150000>;
>                         regulator-boot-on;
>                         regulator-always-on;
>                 };
> @@ -457,7 +457,7 @@
>                         /* VDD_MPU voltage limits 0.95V - 1.1V with +/-4% tolerance */
>                         regulator-name = "vdd_mpu";
>                         regulator-min-microvolt = <925000>;
> -                       regulator-max-microvolt = <1150000>;
> +                       regulator-max-microvolt = <1325000>;
>                         regulator-boot-on;
>                         regulator-always-on;
>                 };
> --
> 2.1.4
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-omap" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

[PATCH 3/3] ARM: dts: Fix frequency scaling on Gumstix Pepper.

[Tony Lindgren]

* Ash Charles <ashcharles@gmail.com> [150609 08:47]:
> This works well for me--cpufreq seems much happier.
> 
> Tested-by: Ash Charles <ashcharles@gmail.com>
> 
> On Thu, Jun 4, 2015 at 11:08 AM, Arun Bharadwaj <arun@gumstix.com> wrote:
> > The device tree for Gumstix Pepper has DCDC2 and
> > DCDC3 correctly labelled but the upper limit values
> > are wrong. The confusion is due to the hardware
> > quirk where the DCDC2 and DCDC3 wires are flipped
> > in Pepper.
> >
> > Signed-off-by: Arun Bharadwaj <arun@gumstix.com>

Applying into omap-for-v4.2/fixes thanks.

Tony

[PATCH 0/3] ARM: dts: Changes for Gumstix Pepper dts

[Kevin Hilman]

Arun Bharadwaj <arun@gumstix.com> writes:

> These 3 patches are included to fix the following issues
> with pepper device tree source. The patches are based against
> linux-omap/master.

I tested this series on top of linus/master with omap2plus_defconfig and
it seems to successfully boot now (used to hang after disabling
vdd_mpu.)

However, it still hangs during boot when testing with multi_v7_defconfig
(boot log below.)

Anyways, it's a step in the right direction.  Feel free to add 

Tested-by: Kevin Hilman <khilman@linaro.org>

Kevin


[1] full console log: linus/master, mutli_v7_defconfig + $SUBJECT series:

Connected to pepper console [channel connected] (~$quit to exit)
(user:khilman) is already connected


# PYBOOT: console: connected.
~$hardreset

Command(pepper console)> hardreset
(user:khilman) Reboot pepper

U-Boot SPL 2014.10 (Feb 24 2015 - 21:56:40)
Booting with DDR
reading u-boot.img
reading u-boot.img


U-Boot 2014.10 (Feb 24 2015 - 21:56:40)

AM335X-GP rev 1.0
       Watchdog enabled
I2C:   ready
DRAM:  512 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
Using default environment

Net:   cpsw
Hit any key to stop autoboot:  1 

# PYBOOT: u-boot: taking control.
 0 
pepper# 
pepper# version
version

U-Boot 2014.10 (Feb 24 2015 - 21:56:40)
arm-poky-linux-gnueabi-gcc (GCC) 4.9.1
GNU ld (GNU Binutils) 2.24
pepper# if test -n ${initenv}; then run initenv; fi
if test -n ${initenv}; then run initenv; fi
pepper# if test -n ${preboot}; then run preboot; fi
if test -n ${preboot}; then run preboot; fi
pepper# setenv autoload no; setenv autoboot no
setenv autoload no; setenv autoboot no
pepper# dhcp
dhcp
cpsw Waiting for PHY auto negotiation to complete... done
link up on port 0, speed 100, full duplex
BOOTP broadcast 1
BOOTP broadcast 2
DHCP client bound to address 192.168.1.190 (322 ms)
pepper# setenv serverip 192.168.1.2
setenv serverip 192.168.1.2
pepper# if test -n ${netargs}; then run netargs; fi
if test -n ${netargs}; then run netargs; fi
pepper# tftp 0x81000000 192.168.1.2:tmp/pepper-B3cJIV/zImage
tftp 0x81000000 192.168.1.2:tmp/pepper-B3cJIV/zImage
link up on port 0, speed 100, full duplex
Using cpsw device
TFTP from server 192.168.1.2; our IP address is 192.168.1.190
Filename 'tmp/pepper-B3cJIV/zImage'.
Load address: 0x81000000
Loading: *#################################################################
 #################################################################
 #################################################################
 #################################################################
 #################################################################
 #################################################################
 #############################
 2.8 MiB/s
done
Bytes transferred = 6146272 (5dc8e0 hex)
pepper# tftp 0x82000000 192.168.1.2:tmp/pepper-B3cJIV/rootfs.cpio.gz
tftp 0x82000000 192.168.1.2:tmp/pepper-B3cJIV/rootfs.cpio.gz
link up on port 0, speed 100, full duplex
Using cpsw device
TFTP from server 192.168.1.2; our IP address is 192.168.1.190
Filename 'tmp/pepper-B3cJIV/rootfs.cpio.gz'.
Load address: 0x82000000
Loading: *#################################################################
 #################################################################
 #################################################################
 #################################################################
 #################################################################
 #############
 2.7 MiB/s
done
Bytes transferred = 4956631 (4ba1d7 hex)
pepper#tftp 0x81f00000 192.168.1.2:tmp/pepper-B3cJIV/tmpW6fNjj.dtb
 tftp 0x81f00000 192.168.1.2:tmp/pepper-B3cJIV/tmpW6fNjj.dtb
link up on port 0, speed 100, full duplex
Using cpsw device
TFTP from server 192.168.1.2; our IP address is 192.168.1.190
Filename 'tmp/pepper-B3cJIV/tmpW6fNjj.dtb'.
Load address: 0x81f00000
Loading: *###
 2.5 MiB/s
done
Bytes transferred = 33734 (83c6 hex)
pepper# printenv bootargs
printenv bootargs
## Error: "bootargs" not defined
pepper# bootz 0x81000000 - 0x81f00000

# PYBOOT: u-boot: jumping to kernel image
bootz 0x81000000 - 0x81f00000
Kernel image @ 0x81000000 [ 0x000000 - 0x5dc8e0 ]
## Flattened Device Tree blob at 81f00000
   Booting using the fdt blob at 0x81f00000
   Loading Device Tree to 8fff4000, end 8ffff3c5 ... OK

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.2.0-rc2-00080-g9ea52aaed426 (khilman at paris) (gcc version 4.7.3 (Ubuntu/Linaro 4.7.3-12ubuntu1) ) #6 SMP Tue Jul 14 05:13:16 PDT 2015
[    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] Machine model: Gumstix Pepper
[    0.000000] cma: Reserved 64 MiB at 0x9b800000
[    0.000000] Memory policy: Data cache writeback
[    0.000000] CPU: All CPU(s) started in SVC mode.
[    0.000000] AM335X ES1.0 (sgx neon )
[    0.000000] PERCPU: Embedded 11 pages/cpu @dfaa4000 s14784 r8192 d22080 u45056
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 129792
[    0.000000] Kernel command line: console=ttyO0,115200n8 earlyprintk
[    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Memory: 434372K/523264K available (7778K kernel code, 1038K rwdata, 3512K rodata, 944K init, 327K bss, 23356K reserved, 65536K cma-reserved, 0K highmem)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
[    0.000000]     vmalloc : 0xe0800000 - 0xff000000   ( 488 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xe0000000   ( 512 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0xc0208000 - 0xc0d0f960   (11295 kB)
[    0.000000]       .init : 0xc0d10000 - 0xc0dfc000   ( 944 kB)
[    0.000000]       .data : 0xc0dfc000 - 0xc0effa80   (1039 kB)
[    0.000000]        .bss : 0xc0f02000 - 0xc0f53c28   ( 328 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000] Additional per-CPU info printed with stalls.
[    0.000000] Build-time adjustment of leaf fanout to 32.
[    0.000000] RCU restricting CPUs from NR_CPUS=16 to nr_cpu_ids=1.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=1
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
[    0.000000] OMAP clockevent source: timer2 at 24000000 Hz
[    0.000018] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
[    0.000048] clocksource: timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[    0.000064] OMAP clocksource: timer1 at 24000000 Hz
[    0.000335] Console: colour dummy device 80x30
[    0.000384] Calibrating delay loop... 548.04 BogoMIPS (lpj=1370112)
[    0.073895] pid_max: default: 32768 minimum: 301
[    0.074102] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.074121] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.075253] CPU: Testing write buffer coherency: ok
[    0.075706] CPU0: thread -1, cpu 0, socket -1, mpidr 0
[    0.075846] Setting up static identity map for 0x80209000 - 0x80209098
[    0.079622] Brought up 1 CPUs
[    0.079648] SMP: Total of 1 processors activated (548.04 BogoMIPS).
[    0.079660] CPU: All CPU(s) started in SVC mode.
[    0.080426] devtmpfs: initialized
[    0.096971] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[    0.116040] omap_hwmod: tptc0 using broken dt data from edma
[    0.116258] omap_hwmod: tptc1 using broken dt data from edma
[    0.116456] omap_hwmod: tptc2 using broken dt data from edma
[    0.122224] omap_hwmod: debugss: _wait_target_disable failed
[    0.180068] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 9556302231375000 ns
[    0.186095] pinctrl core: initialized pinctrl subsystem
[    0.189457] NET: Registered protocol family 16
[    0.192853] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.196065] cpuidle: using governor ladder
[    0.196099] cpuidle: using governor menu
[    0.202031] OMAP GPIO hardware version 0.1
[    0.220615] No ATAGs?
[    0.220659] hw-breakpoint: debug architecture 0x4 unsupported.
[    0.227077] Serial: AMBA PL011 UART driver
[    0.258804] edma-dma-engine edma-dma-engine.0: TI EDMA DMA engine driver
[    0.265009] vgaarb: loaded
[    0.266352] SCSI subsystem initialized
[    0.267328] usbcore: registered new interface driver usbfs
[    0.267457] usbcore: registered new interface driver hub
[    0.267559] usbcore: registered new device driver usb
[    0.268790] omap_i2c 44e0b000.i2c: could not find pctldev for node /ocp/l4_wkup at 44c00000/scm at 210000/pinmux at 800/pinmux_i2c0, deferring probe
[    0.268959] omap_i2c 4802a000.i2c: could not find pctldev for node /ocp/l4_wkup at 44c00000/scm at 210000/pinmux at 800/pinmux_i2c1, deferring probe
[    0.270056] pps_core: LinuxPPS API ver. 1 registered
[    0.270072] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.270117] PTP clock support registered
[    0.270442] EDAC MC: Ver: 3.0.0
[    0.274823] clocksource: Switched to clocksource timer1
[    0.292941] NET: Registered protocol family 2
[    0.293934] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[    0.294018] TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
[    0.294122] TCP: Hash tables configured (established 4096 bind 4096)
[    0.294223] UDP hash table entries: 256 (order: 1, 8192 bytes)
[    0.294259] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[    0.294528] NET: Registered protocol family 1
[    0.295194] RPC: Registered named UNIX socket transport module.
[    0.295216] RPC: Registered udp transport module.
[    0.295227] RPC: Registered tcp transport module.
[    0.295237] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.296124] Unpacking initramfs...
[    0.867384] Freeing initrd memory: 4844K (c2000000 - c24bb000)
[    0.867971] hw perfevents: Failed to parse /pmu/interrupt-affinity[0]
[    0.868064] hw perfevents: enabled with armv7_cortex_a8 PMU driver, 5 counters available
[    0.871465] futex hash table entries: 256 (order: 2, 16384 bytes)
[    0.892259] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.893967] NFS: Registering the id_resolver key type
[    0.894059] Key type id_resolver registered
[    0.894071] Key type id_legacy registered
[    0.894172] ntfs: driver 2.1.32 [Flags: R/O].
[    0.896531] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
[    0.896570] io scheduler noop registered
[    0.896589] io scheduler deadline registered
[    0.896928] io scheduler cfq registered (default)
[    0.902490] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
[    1.016905] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[    1.020887] SuperH (H)SCI(F) driver initialized
[    1.022138] msm_serial: driver initialized
[    1.023049] omap_uart 44e09000.serial: no wakeirq for uart0
[    1.023302] 44e09000.serial: ttyO0 at MMIO 0x44e09000 (irq = 154, base_baud = 3000000) is a OMAP UART0
[    1.697628] console [ttyO0] enabled
[    1.702156] omap_uart 48022000.serial: no wakeirq for uart1
[    1.708250] 48022000.serial: ttyO1 at MMIO 0x48022000 (irq = 155, base_baud = 3000000) is a OMAP UART1
[    1.718793] STMicroelectronics ASC driver initialized
[    1.726659] [drm] Initialized drm 1.1.0 20060810
[    1.743793] loop: module loaded
[    1.759192] CAN device driver interface
[    1.765030] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.2.18-k
[    1.772471] igb: Copyright (c) 2007-2014 Intel Corporation.
[    1.782274] pegasus: v0.9.3 (2013/04/25), Pegasus/Pegasus II USB Ethernet driver
[    1.790237] usbcore: registered new interface driver pegasus
[    1.796342] usbcore: registered new interface driver asix
[    1.802141] usbcore: registered new interface driver ax88179_178a
[    1.808655] usbcore: registered new interface driver cdc_ether
[    1.814930] usbcore: registered new interface driver smsc75xx
[    1.821131] usbcore: registered new interface driver smsc95xx
[    1.827285] usbcore: registered new interface driver net1080
[    1.833344] usbcore: registered new interface driver cdc_subset
[    1.839675] usbcore: registered new interface driver zaurus
[    1.845730] usbcore: registered new interface driver cdc_ncm
[    1.854413] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.861369] ehci-pci: EHCI PCI platform driver
[    1.866188] ehci-platform: EHCI generic platform driver
[    1.872014] ehci-omap: OMAP-EHCI Host Controller driver
[    1.877761] ehci-orion: EHCI orion driver
[    1.882209] SPEAr-ehci: EHCI SPEAr driver
[    1.886657] ehci-st: EHCI STMicroelectronics driver
[    1.892010] ehci-exynos: EHCI EXYNOS driver
[    1.896662] ehci-atmel: EHCI Atmel driver
[    1.901111] tegra-ehci: Tegra EHCI driver
[    1.905583] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.912149] ohci-pci: OHCI PCI platform driver
[    1.916965] ohci-platform: OHCI generic platform driver
[    1.922742] ohci-omap3: OHCI OMAP3 driver
[    1.927201] SPEAr-ohci: OHCI SPEAr driver
[    1.931672] ohci-st: OHCI STMicroelectronics driver
[    1.937037] ohci-atmel: OHCI Atmel driver
[    1.941626] usbcore: registered new interface driver usb-storage
[    1.950401] mousedev: PS/2 mouse device common for all mice
[    1.962268] i2c /dev entries driver
[    1.975426] sdhci: Secure Digital Host Controller Interface driver
[    1.981972] sdhci: Copyright(c) Pierre Ossman
[    1.988073] omap_hsmmc 48060000.mmc: Got CD GPIO
[    1.993857] omap_hsmmc 48060000.mmc: unable to get vmmc regulator -517
[    2.001590] 47810000.mmc supply vmmc not found, using dummy regulator
[    2.008803] omap_hsmmc 47810000.mmc: could not set regulator OCR (-22)
[    2.046285] Synopsys Designware Multimedia Card Interface Driver
[    2.054141] sdhci-pltfm: SDHCI platform and OF driver helper
[    2.063095] ledtrig-cpu: registered to indicate activity on CPUs
[    2.070026] usbcore: registered new interface driver usbhid
[    2.075915] usbhid: USB HID core driver
[    2.084966] NET: Registered protocol family 17
[    2.089686] can: controller area network core (rev 20120528 abi 9)
[    2.096359] NET: Registered protocol family 29
[    2.101079] can: raw protocol (rev 20120528)
[    2.105597] can: broadcast manager protocol (rev 20120528 t)
[    2.111580] can: netlink gateway (rev 20130117) max_hops=1
[    2.118189] Key type dns_resolver registered
[    2.122966] omap_voltage_late_init: Voltage driver support not added
[    2.131238] ThumbEE CPU extension supported.
[    2.135876] Registering SWP/SWPB emulation handler
[    2.150362] at24 0-0050: 32768 byte 24c256 EEPROM, writable, 1 bytes/write
[    2.158333] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz
[    2.166392] omap_i2c 4802a000.i2c: bus 1 rev0.11 at 400 kHz
[    2.174730] omap_hsmmc 48060000.mmc: Got CD GPIO
[    2.180169] omap_hsmmc 48060000.mmc: unable to get vmmc regulator -517
[    2.229100] mmc0: new high speed SDIO card at address 0001
[    2.244872] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6
[    2.251312] davinci_mdio 4a101000.mdio: detected phy mask fffffffe
[    2.266864] libphy: 4a101000.mdio: probed
[    2.271233] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00, driver Micrel KSZ9021 Gigabit PHY
[    2.283796] cpsw 4a100000.ethernet: Detected MACID = 00:18:31:e1:31:00
[    2.293974] input: user_buttons as /devices/platform/user_buttons/input/input0
[    2.304363] omap_hsmmc 48060000.mmc: Got CD GPIO
[    2.309858] omap_hsmmc 48060000.mmc: unable to get vmmc regulator -517
[    2.318674] hctosys: unable to open rtc device (rtc0)
[    2.331330] platform 48060000.mmc: omap_device_late_idle: enabled but no driver.  Idling
[    2.340126] vdd5_reg: disabling
[    2.343433] v3v3c_reg: disabling
[    2.346879] vbat: disabling
[    2.353231] omap_hsmmc 48060000.mmc: Got CD GPIO
[    2.358457] Unhandled fault: external abort on non-linefetch (0x1028) at 0xfa06012c
[    2.
# PYBOOT: kernel: Unhandled fault: external abort on non-linefetch (0x1028) at 0xfa06012c

366499] pgd = c0204000
[    2.369339] [fa06012c] *pgd=48011452(bad)
[    2.373571] Internal error: : 1028 [#1] SMP ARM
[    2.378327] Modules linked in:
[    2.381548] CPU: 0 PID: 6 Comm: kworker/u2:0 Not tainted 4.2.0-rc2-00080-g9ea52aaed426 #6
[    2.390127] Hardware name: Generic AM33XX (Flattened Device Tree)
[    2.396547] Workqueue: deferwq deferred_probe_work_func
[    2.402036] task: db0597c0 ti: db074000 task.ti: db074000
[    2.407711] PC is at omap_hsmmc_probe+0x2b8/0xa14
[    2.412665] LR is at rpm_idle+0x10/0x11c
[    2.416784] pc : [<c081703c>]    lr : [<c06170d0>]    psr: a0000013
[    2.416784] sp : db075e40  ip : 00000064  fp : fa060100
[    2.428826] r10: db4e1300  r9 : 0000009e  r8 : 00000000
[    2.434308] r7 : db0e0410  r6 : db0e0400  r5 : 00000000  r4 : db4e1000
[    2.441155] r3 : fa060100  r2 : 00000001  r1 : 00000008  r0 : fffffff5
[    2.448006] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
[    2.455674] Control: 10c5387d  Table: 9b4e8019  DAC: 00000015
[    2.461703] Process kworker/u2:0 (pid: 6, stack limit = 0xdb074220)
[    2.468278] Stack: (0xdb075e40 to 0xdb076000)
[    2.472856] 5e40: db4737d0 db0e15f0 00000001 00000009 db0e15f0 db4737d0 c0c0a274 db0e15f0
[    2.481441] 5e60: 00000001 ffffffef db0e0410 fffffdfb c0ec14dc 00000009 db02d000 00000001
[    2.490026] 5e80: 00000002 c0610564 c061051c db0e0410 c0f41e24 00000000 c0ec14dc c060efa8
[    2.498610] 5ea0: 00000000 db075ed0 c060f238 00000001 00000000 c060d6ac db02a970 db4740b8
[    2.507195] 5ec0: db0e0410 db0e0444 c0ea13f0 c060ed68 db0e0410 00000001 00000000 db0e0410
[    2.515780] 5ee0: db0e0410 c0ea13f0 db423b00 c060e524 db0e0410 c0ea1390 c0ea1378 c060e8fc
[    2.524365] 5f00: db02d000 c0ea13ac db04f400 c025f260 dfaa43c0 db04f400 00000001 db04f414
[    2.532951] 5f20: 00000001 db04f400 db02d018 00000088 db02d000 db04f400 00000002 c025f4c0
[    2.541535] 5f40: db0597c0 db02b640 00000000 db02d000 c025f498 00000000 00000000 00000000
[    2.550120] 5f60: 00000000 c0264618 db059300 00000000 ffa4e9fc db02d000 00000000 00000000
[    2.558705] 5f80: db075f80 db075f80 00000000 00000000 db075f90 db075f90 db075fac db02b640
[    2.567289] 5fa0: c0264540 00000000 00000000 c02109a8 00000000 00000000 00000000 00000000
[    2.575873] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    2.584458] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 d79d5c5b baafffaa
[    2.593070] [<c081703c>] (omap_hsmmc_probe) from [<c0610564>] (platform_drv_probe+0x48/0xa4)
[    2.601936] [<c0610564>] (platform_drv_probe) from [<c060efa8>] (driver_probe_device+0x1c8/0x26c)
[    2.611254] [<c060efa8>] (driver_probe_device) from [<c060d6ac>] (bus_for_each_drv+0x44/0x8c)
[    2.620205] [<c060d6ac>] (bus_for_each_drv) from [<c060ed68>] (__device_attach+0x88/0xd8)
[    2.628793] [<c060ed68>] (__device_attach) from [<c060e524>] (bus_probe_device+0x84/0x8c)
[    2.637381] [<c060e524>] (bus_probe_device) from [<c060e8fc>] (deferred_probe_work_func+0x5c/0x88)
[    2.646799] [<c060e8fc>] (deferred_probe_work_func) from [<c025f260>] (process_one_work+0x134/0x338)
[    2.656393] [<c025f260>] (process_one_work) from [<c025f4c0>] (worker_thread+0x28/0x4cc)
[    2.664891] [<c025f4c0>] (worker_thread) from [<c0264618>] (kthread+0xd8/0xf4)
[    2.672485] [<c0264618>] (kthread) from [<c02109a8>] (ret_from_fork+0x14/0x2c)
[    2.680070] Code: e5940300 e3a01001 ebf80383 e594332c (e593202c) 
[    2.686469] ---[ end trace 2bc5564f7a786282 ]---
[    2.691516] Unable to handle kernel paging request at virtual address ffffffec
[    2.699101] pgd = c0204000
[    2.701939] [ffffffec] *pgd=9fede821, *pte=00000000, *ppte=00000000
[    2.708543] Internal error: Oops: 17 [#2] SMP ARM
[    2.713477] Modules linked in:
[    2.716693] CPU: 0 PID: 6 Comm: kworker/u2:0 Tainted: G      D         4.2.0-rc2-00080-g9ea52aaed426 #6
[    2.726546] Hardware name: Generic AM33XX (Flattened Device Tree)
[    2.732949] task: db0597c0 ti: db074000 task.ti: db074000
[    2.738618] PC is at kthread_data+0x4/0xc
[    2.742829] LR is at wq_worker_sleeping+0xc/0xd0
[    2.747674] pc : [<c0264b60>]    lr : [<c026041c>]    psr: 20000193
[    2.747674] sp : db075c50  ip : dfaa7040  fp : db075c9c
[    2.759716] r10: c0dfe6a8  r9 : db0597c0  r8 : c0dfa040
[    2.765196] r7 : 00000000  r6 : db059a54  r5 : c0dfa040  r4 : 00000000
[    2.772042] r3 : 00000000  r2 : 00000000  r1 : 00000000  r0 : db0597c0
[    2.778891] Flags: nzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
[    2.786468] Control: 10c5387d  Table: 9b4e8019  DAC: 00000015
[    2.792496] Process kworker/u2:0 (pid: 6, stack limit = 0xdb074220)
[    2.799071] Stack: (0xdb075c50 to 0xdb076000)
[    2.803645] 5c40:                                     dfaa7040 c0958060 00000001 c0f04794
[    2.812231] 5c60: db0597c0 c024d248 c0df7280 00000001 c09583e0 1ecad000 db0599d0 db075a84
[    2.820816] 5c80: db058000 db0599d0 db075cb0 0000000b 00000001 00000001 db075ca4 c09583e0
[    2.829401] 5ca0: db0597c0 c024e688 c0bac160 db075ccc db075cb0 db075cb0 db075df8 c0f02604
[    2.837986] 5cc0: db075df8 c0e02ce4 60000193 0000000b 00000001 c081703e c0817040 c0213a04
[    2.846571] 5ce0: db074220 0000000b 00000000 c0e02ce4 00000000 00000008 65000000 30343935
[    2.855156] 5d00: 20303033 30613365 31303031 66626520 38333038 35652033 33333439 28206332
[    2.863741] 5d20: 33393565 63323032 c0002029 db075d4c 00000000 00001028 00000007 fa06012c
[    2.872327] 5d40: c0e0309c db075df8 0000009e db4e1300 fa060100 c020a2ac 00000000 80000000
[    2.880912] 5d60: 00000007 00000000 00000000 fa06012c db0e1820 db4f3eb0 db4f3eb0 c035a628
[    2.889496] 5d80: 00000002 db4f3eb0 00000000 00000000 db0e1820 c035a8a4 c096add8 c0ea1af4
[    2.898080] 5da0: db0e1820 00000000 db0e1820 db4f3eb0 c096add8 c0ea1af4 db0e1820 c035bcb8
[    2.906664] 5dc0: 00000000 00000000 00000000 c035c454 00001000 00000000 db0de9cd 0000000d
[    2.915248] 5de0: c081703c a0000013 ffffffff db075e2c 00000000 c0214118 fffffff5 00000008
[    2.923833] 5e00: 00000001 fa060100 db4e1000 00000000 db0e0400 db0e0410 00000000 0000009e
[    2.932419] 5e20: db4e1300 fa060100 00000064 db075e40 c06170d0 c081703c a0000013 ffffffff
[    2.941003] 5e40: db4737d0 db0e15f0 00000001 00000009 db0e15f0 db4737d0 c0c0a274 db0e15f0
[    2.949588] 5e60: 00000001 ffffffef db0e0410 fffffdfb c0ec14dc 00000009 db02d000 00000001
[    2.958172] 5e80: 00000002 c0610564 c061051c db0e0410 c0f41e24 00000000 c0ec14dc c060efa8
[    2.966757] 5ea0: 00000000 db075ed0 c060f238 00000001 00000000 c060d6ac db02a970 db4740b8
[    2.975342] 5ec0: db0e0410 db0e0444 c0ea13f0 c060ed68 db0e0410 00000001 00000000 db0e0410
[    2.983927] 5ee0: db0e0410 c0ea13f0 db423b00 c060e524 db0e0410 c0ea1390 c0ea1378 c060e8fc
[    2.992512] 5f00: db02d000 c0ea13ac db04f400 c025f260 dfaa43c0 db04f400 00000001 db04f414
[    3.001098] 5f20: 00000001 db04f400 db02d018 00000088 db02d000 db04f400 00000002 c025f4c0
[    3.009683] 5f40: db0597c0 db02b640 00000000 db02d000 c025f498 00000000 00000000 00000000
[    3.018269] 5f60: 00000000 c0264618 db059300 00000000 ffa4e9fc db02d000 00000000 00000000
[    3.026854] 5f80: db075f80 db075f80 00000001 00010001 db075f90 db075f90 db075fac db02b640
[    3.035438] 5fa0: c0264540 00000000 00000000 c02109a8 00000000 00000000 00000000 00000000
[    3.044021] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    3.052605] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 d79d5c5b baafffaa
[    3.061195] [<c0264b60>] (kthread_data) from [<c026041c>] (wq_worker_sleeping+0xc/0xd0)
[    3.069606] [<c026041c>] (wq_worker_sleeping) from [<c0958060>] (__schedule+0x298/0x51c)
[    3.078102] [<c0958060>] (__schedule) from [<c09583e0>] (schedule+0x34/0x98)
[    3.085507] [<c09583e0>] (schedule) from [<c024e688>] (do_exit+0x5c8/0x8f0)
[    3.092825] [<c024e688>] (do_exit) from [<c0213a04>] (die+0x3e0/0x428)
[    3.099683] [<c0213a04>] (die) from [<c020a2ac>] (do_DataAbort+0xa4/0xb4)
[    3.106812] [<c020a2ac>] (do_DataAbort) from [<c0214118>] (__dabt_svc+0x38/0x60)
[    3.114570] Exception stack(0xdb075df8 to 0xdb075e40)
[    3.119870] 5de0:                                                       fffffff5 00000008
[    3.128455] 5e00: 00000001 fa060100 db4e1000 00000000 db0e0400 db0e0410 00000000 0000009e
[    3.137040] 5e20: db4e1300 fa060100 00000064 db075e40 c06170d0 c081703c a0000013 ffffffff
[    3.145629] [<c0214118>] (__dabt_svc) from [<c081703c>] (omap_hsmmc_probe+0x2b8/0xa14)
[    3.153949] [<c081703c>] (omap_hsmmc_probe) from [<c0610564>] (platform_drv_probe+0x48/0xa4)
[    3.162813] [<c0610564>] (platform_drv_probe) from [<c060efa8>] (driver_probe_device+0x1c8/0x26c)
[    3.172129] [<c060efa8>] (driver_probe_device) from [<c060d6ac>] (bus_for_each_drv+0x44/0x8c)
[    3.181080] [<c060d6ac>] (bus_for_each_drv) from [<c060ed68>] (__device_attach+0x88/0xd8)
[    3.189668] [<c060ed68>] (__device_attach) from [<c060e524>] (bus_probe_device+0x84/0x8c)
[    3.198256] [<c060e524>] (bus_probe_device) from [<c060e8fc>] (deferred_probe_work_func+0x5c/0x88)
[    3.207665] [<c060e8fc>] (deferred_probe_work_func) from [<c025f260>] (process_one_work+0x134/0x338)
[    3.217255] [<c025f260>] (process_one_work) from [<c025f4c0>] (worker_thread+0x28/0x4cc)
[    3.225752] [<c025f4c0>] (worker_thread) from [<c0264618>] (kthread+0xd8/0xf4)
[    3.233337] [<c0264618>] (kthread) from [<c02109a8>] (ret_from_fork+0x14/0x2c)
[    3.240920] Code: e513001c e7e00150 e12fff1e e5903268 (e5130014) 
[    3.247317] ---[ end trace 2bc5564f7a786283 ]---
[    3.252159] Fixing recursive fault but reboot is needed!
~$off
# PYBOOT: Exception: kernel: Unable to handle kernel paging request at virtual address ffffffec

#
# PYBOOT: cmdline: pyboot pepper
# PYBOOT: Time: 17.30 (bootloader: 12.60, setup: 0.22, kernel: 0.00)
# PYBOOT: Warnings: 1
# PYBOOT: Result: FAIL