Picasso-kernel

Use picasso-kernel on PAZ00

Problems left

1. Slow data/system EXT4 format from recovery with SanDisk eMMC
2. UDC usb works only if inserted before poweron) (fixed by digetx)
3. Hardware video overlays freezes (Probably memory clock problem)
4. No power button and lid events from nvec (Works with Stuw's patches)
5. Battare uevents (Patch from 3.1 fits 3.18)

---

Memreserve calculations

Memory hole like kernel 3.1.10

/*
 * Carveouts for multimedia and ram console
 * 128MB - multimedia
 * 8MB - fb1
 * 16MB - fb2
 * 1MB - ram-console
 */

memory {
        reg = <0x00000000 0x20000000>;
};

/memreserve/ 0x11000000+0x9900000=0x1A900000

nvmap:0x11000000+0x8000000=0x19000000
dc1:0x19000000+0x800000=0x19800000
dc2:0x19800000+0x01000000=0x1A800000
ramconsole:0x1A800000+0x00100000=0x1A900000

memory size note

512 megabyte=536 870 912 bytes /* Total RAM */
128 megabyte=134 217 728 bytes
64 megabyte=67 108 864 bytes
32 megabyte=33 554 432 bytes

---

UDC

Clocks diff

--- picasso-kernel-udc-not-connected-clocks-1   2016-04-27 01:09:48.527156892 +0300
+++ picasso-kernel-udc-power-on-clocks-1        2016-04-27 01:10:08.994148847 +0300
@@ -1,5 +1,5 @@
-Not inserted:
-shell@android:/ # grep -Hsi "" /sys/kernel/debug/clk/*/clk_rate                
+inserted
+shell@android:/ # grep -Hsi "" /sys/kernel/debug/clk/*/clk_rate
 /sys/kernel/debug/clk/2d/clk_rate:300000000
 /sys/kernel/debug/clk/2d_emc/clk_rate:0
 /sys/kernel/debug/clk/3d/clk_rate:300000000
@@ -86,7 +86,7 @@
 /sys/kernel/debug/clk/pll_p_out4_div/clk_rate:24000000
 /sys/kernel/debug/clk/pll_ref/clk_rate:12000000
 /sys/kernel/debug/clk/pll_u/clk_rate:480000000
-/sys/kernel/debug/clk/pll_x/clk_rate:1000000000
+/sys/kernel/debug/clk/pll_x/clk_rate:312000000
 /sys/kernel/debug/clk/pwm/clk_rate:32768
 /sys/kernel/debug/clk/rtc/clk_rate:32768
 /sys/kernel/debug/clk/sbc1/clk_rate:86400000

Kernel logs

udc before power on connected http://pastebin.com/3d1RLizK udc power on not connected http://pastebin.com/vH0tYwbv

---

EMC

Current clocks after power on http://pastebin.com/sZzsyLka
EMC clock use patch https://github.com/ac100-ru/picasso-kernel/commit/964333b5b4844bea59f05ce4095ba8742bc55f41
EMC driver code https://github.com/ac100-ru/picasso-kernel/commit/e068d72acd417d3134ba1d183d7288a8c9be2a70

---

Video overlays

Current logcat while freezing

I/Choreographer(  525): Skipped 34 frames!  The application may be doing too much work on its main thread.

https://developer.android.com/training/testing/performance.html

---

cpufreq

root@android:/sys/devices/system/cpu/cpufreq/interactive # ls -la
-rw-rw-r-- system   system       4096 2016-04-20 01:08 above_hispeed_delay
-rw-rw---- system   system       4096 2016-04-20 01:08 boost
-rw-rw---- system   system       4096 2016-04-20 01:08 boostpulse
-rw-rw---- system   system       4096 2016-04-20 01:08 boostpulse_duration
-rw-rw-r-- system   system       4096 2016-04-20 01:08 go_hispeed_load
-rw-rw-r-- system   system       4096 2016-04-20 01:08 hispeed_freq
-rw-r--r-- root     root         4096 2016-04-20 01:09 io_is_busy
-rw-rw---- system   system       4096 2016-04-20 01:08 min_sample_time
-rw-r--r-- root     root         4096 2016-04-20 01:08 target_loads
-rw-rw-r-- system   system       4096 2016-04-20 01:08 timer_rate
-rw-r--r-- root     root         4096 2016-04-20 01:09 timer_slack

root@android:/sys/module/tegra2_emc/parameters # cat emc_enable      
Y

1|root@android:/data # grep -Hsi "" /sys/devices/system/cpu/cpufreq/interactiv>
/sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay:80000
/sys/devices/system/cpu/cpufreq/interactive/boost:0
/sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration:80000
/sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load:99
/sys/devices/system/cpu/cpufreq/interactive/hispeed_freq:1000000
/sys/devices/system/cpu/cpufreq/interactive/io_is_busy:0
/sys/devices/system/cpu/cpufreq/interactive/min_sample_time:30000
/sys/devices/system/cpu/cpufreq/interactive/target_loads:29 312000:30 456000:45 608000:50 760000:60 816000:70 912000:90 2000000:99
/sys/devices/system/cpu/cpufreq/interactive/timer_rate:20000
/sys/devices/system/cpu/cpufreq/interactive/timer_slack:80000

root@android:/data # grep -Hsi "" /sys/devices/system/cpu/cpu0/cpufreq/*       
/sys/devices/system/cpu/cpu0/cpufreq/affected_cpus:0 1
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq:216000
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq:1000000
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq:216000
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency:300000
/sys/devices/system/cpu/cpu0/cpufreq/related_cpus:0 1
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies:216000 312000 456000 608000 760000 816000 912000 1000000 
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors:conservative ondemand userspace powersave interactive performance 
/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq:216000
/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver:tegra
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor:interactive
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq:1000000
/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq:216000
/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed:<unsupported>

---

Notes

Checkout maybe this patches need to be added somehow to 3.18

https://github.com/zombah/android_kernel_toshiba_ac100/commit/1759db16750a029bfc80a62ab0918b84558dfab3
https://github.com/zombah/android_kernel_toshiba_ac100/commit/046a597b9cc3e2bd7b707887530827cbd607b275