booting linux-imx_4.1.15_1.0.0_ga on imx6sx

[tcmichals]

i'm having two issues booting linux-imx_4.1.15_1.0.0_ga on imx6sx:

anatop is configuring the following :

anatop_regulator 20c8000.anatop:regulator-vddcore@140: Failed to read a valid default voltage selector.

anatop_regulator: probe of 20c8000.anatop:regulator-vddcore@140 failed with error -22

anatop_regulator 20c8000.anatop:regulator-vddsoc@140: Failed to read a valid default voltage selector.

anatop_regulator: probe of 20c8000.anatop:regulator-vddsoc@140 failed with error -22

all the above is defined in the imx6sx.dtsi:

reg_arm: regulator-vddcore@140 {

compatible = "fsl,anatop-regulator";

  regulator-name = "vddarm";

  regulator-min-microvolt = <725000>;

  regulator-max-microvolt = <1450000>;

  regulator-always-on;

  anatop-reg-offset = <0x140>;

  anatop-vol-bit-shift = <0>;

  anatop-vol-bit-width = <5>;

  anatop-delay-reg-offset = <0x170>;

  anatop-delay-bit-shift = <24>;

  anatop-delay-bit-width = <2>;

  anatop-min-bit-val = <1>;

  anatop-min-voltage = <725000>;

  anatop-max-voltage = <1450000>;

}

and a crash:

Key type dns_resolver registered

cpu cpu0: dev_pm_opp_get_opp_count: device OPP not found (-19)

failed to register cpuidle driver

Unable to handle kernel NULL pointer dereference at virtual address 00000008

pgd = 80004000

[00000008] *pgd=00000000

Internal error: Oops: 805 [#1] PREEMPT SMP ARM

Modules linked in:

CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.1.15 #1

Hardware name: Freescale i.MX6 SoloX (Device Tree)

task: 8804c000 ti: 88050000 task.ti: 88050000

PC is at imx_amp_power_init+0x98/0xe8

LR is at 0x0

pc : [<80aa1a34>]    lr : [<00000000>]    psr: a0000113

sp : 88051ee8  ip : 00000001  fp : 8bfff900

r10: 80adeb7c  r9 : 00000008  r8 : 80b606b0

r7 : 00000014  r6 : 00000001  r5 : 80b6025c  r4 : 00000001

r3 : 00000000  r2 : 88002b00  r1 : 00000000  r0 : 88002b00

Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel

Control: 10c53c7d  Table: 8000404a  DAC: 00000015

Process swapper/0 (pid: 1, stack limit = 0x88050210)

Stack: (0x88051ee8 to 0x88052000)

1ee0:                   80af7720 80af7720 88675f80 80aa199c 00000000 80009730

1f00: 807c8bf4 80a51c18 0000010d 00000087 00000000 80a52478 00000072 88051f30

1f20: 8bfff9ca 8bfff9bc 807c8bf4 8004c5b8 00000000 00000000 8096aacc 00000007

1f40: 00000007 809763c4 80aff3d0 0000010d 0000010d 80b5f000 80b5f000 80aeb664

1f60: 80adeb78 80adeb7c 8bfff900 80a87db4 00000007 00000007 80a875a0 8079b8a4

1f80: 8bb2c800 0000f000 8079198c 00000000 00000000 00000000 00000000 00000000

1fa0: 00000000 80791998 00000000 8000f528 00000000 00000000 00000000 00000000

1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 fdffdab9 ef3053af

[<80aa1a34>] (imx_amp_power_init) from [<80009730>] (do_one_initcall+0x8c/0x1d8)

[<80009730>] (do_one_initcall) from [<80a87db4>] (kernel_init_freeable+0x140/0x1d0)

[<80a87db4>] (kernel_init_freeable) from [<80791998>] (kernel_init+0xc/0xe0)

[<80791998>] (kernel_init) from [<8000f528>] (ret_from_fork+0x14/0x2c)

Code: e0233497 e7952102 e2844001 e1a00002 (e5832008)

---[ end trace 5d15f49654e5e9b0 ]---

Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

[tcmichals]

according to this email the error is benign is it?

[PATCH V2] ARM: imx: add cpufreq support for i.mx6sx

Is there output kernel boot up for 4.1.15?

Still trying to resolve the issue Waiting for root device /dev/mmcblk0p2...

[igorpadykov]

seems this board is not intergared in L4.1.15 yet,

suggest to apply to  Udoo Neo vendor for adapting it.

[tcmichals]

Added some additional code to check shared memory was initialized

static int __init imx_amp_power_init(void)

{

  int i;

void __iomem *shared_mem_base;

  if (!(imx_src_is_m4_enabled() && cpu_is_imx6sx()))

       return 0;

amp_power_mutex = imx_sema4_mutex_create(0, MCC_POWER_SHMEM_NUMBER);

shared_mem_base = ioremap_nocache(shared_mem_paddr, shared_mem_size);

  if (!shared_mem_base) {

       pr_err("Failed ioremap_nocache shared_mem_paddr!\n");

       return 0;

  }

shared_mem_base is setup if the m4 is in the dt; in this case it is not so, shared_mem_base is NULL.

Now; the issue is still:

anatop_regulator 20c8000.anatop:regulator-vddcore@140: Failed to read a valid default voltage selector.

anatop_regulator: probe of 20c8000.anatop:regulator-vddcore@140 failed with error -22

anatop_regulator 20c8000.anatop:regulator-vddsoc@140: Failed to read a valid default voltage selector.

anatop_regulator: probe of 20c8000.anatop:regulator-vddsoc@140 failed with error -22

Also, there are a few other issues:

sdhci: Secure Digital Host Controller Interface driver

sdhci: Copyright(c) Pierre Ossman

sdhci-pltfm: SDHCI platform and OF driver helper

/soc/aips-bus@02100000/usdhc@02194000: voltage-ranges unspecified

sdhci-esdhc-imx 2194000.usdhc: Got CD GPIO

sdhci-esdhc-imx 2194000.usdhc: No vmmc regulator found

sdhci-esdhc-imx 2194000.usdhc: No vqmmc regulator found

mmc0: SDHCI controller on 2194000.usdhc [2194000.usdhc] using ADMA

/soc/aips-bus@02100000/usdhc@02198000: voltage-ranges unspecified

sdhci-esdhc-imx 2198000.usdhc: could not get ultra high speed state, work on normal mode

sdhci-esdhc-imx 2198000.usdhc: No vqmmc regulator found <-- issue causes sdcard ?

usb 2-1: new full-speed USB device number 2 using ci_hdrc

mmc2: SDHCI controller on 2198000.usdhc [2198000.usdhc] using ADMA

galcore: clk_get 2d core clock failed, disable 2d/vg!

cpu cpu0: dev_pm_opp_get_opp_count: device OPP not found (-19)

failed to register cpuidle driver <--- isuue

Failed ioremap_nocache shared_mem_paddr! <--- M4 not being defined 

snvs_rtc 20cc000.snvs:snvs-rtc-lp: setting system clock to 1970-01-01 00:00:01 UTC (1)

VLDO2: disabling

wlan-en-regulator: disabling

PSU-5V0: disabling

clk: Not disabling unused clocks

Waiting for root device /dev/mmcblk0p2...  <--- SDcard not loading fs... I think this is due to sdhci-esdhc-imx 2198000.usdhc: No vqmmc regulator found

random: nonblocking pool is initialized

[igorpadykov]

Hi Tim

from log : "cpu cpu0: dev_pm_opp_get_opp_count: device OPP not found (-19)"

seems dts file (like imx6sx-sdb.dts) is not defined, it contains core operatings points.

Note, if this is custom board first necessary to run ddr test

i.MX6/7 DDR Stress Test Tool V2.51

find new ddr settings then rebuild uboot image with new settings included in

uboot/board/freescale/mx6sxsabresd/*.cfg file

For flashing images recommended to use MFG Tools (use *.vbs for appropriate board)

Programmers (Flash, etc.) (10)

IMX6_L4.1.15_MFG_TOOL (REV L4.1.15_1.0.0)

SABRE Board Reference Design|NXP

For i.MX6SX Sabre SD board one can try Demo images on that link

Board Support Packages (35)

L4.1.15_1.0.0_iMX6SX (REV L4.1.15_1.0.0)

Best regards

igor

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[tcmichals]

The board is a Udoo Neo and 3.14 has been working on the board using the same u-boot to boot the processor

cpu is defined:

&cpu0 {

  operating-points = <

  /* kHz    uV */

  996000  1250000

  792000  1175000

  396000  1175000

  198000 1175000

  >;

  fsl,soc-operating-points = <

  /* ARM kHz      SOC uV */

  996000 1250000

  792000 1175000

  396000 1175000

  198000 1175000

  >;

  arm-supply = <&sw1a_reg>;

  soc-supply = <&sw1a_reg>;

  fsl,arm-soc-shared = <1>;

};

looking at the code in imx6q-cpufreq.c

static int imx6q_cpufreq_probe(struct platform_device *pdev)

{

.....

       num = dev_pm_opp_get_opp_count(cpu_dev);  <--cpu-dev does exist in this context  but not in the upper layer why because num is less then zero..

  if (num < 0) {

          rtet = of_init_opp_table(cpu_dev);

  if (ret < 0) {

  dev_err(cpu_dev, "failed to init OPP table: %d\n", ret);

  goto put_node;

  }